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arxiv: 2606.00068 · v1 · pith:D2WA6FQ2new · submitted 2026-05-20 · ⚛️ physics.app-ph · cond-mat.mes-hall· cond-mat.mtrl-sci

Photooxidative ageing of 3D printed polymers PLA, ABS, PET, HIPS and PC induced by long-term UV radiation

Jan Tomastik , Karolina Siskova , Lukas Vaclavek , Radim Ctvrtlik This is my paper

Pith reviewed 2026-06-30 17:08 UTC · model grok-4.3

classification ⚛️ physics.app-ph cond-mat.mes-hallcond-mat.mtrl-sci
keywords propertiesmechanicalchangeswerepetgpolymerssampleships
0
0 comments X

The pith

UV exposure over 10 months leaves PLA and PC 3D prints mechanically intact while embrittling ABS and HIPS, with PETG changes confined to the top 10 micrometers.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper measures the effects of more than 7744 hours of UV light on five FFF-printed polymers inside a controlled environmental cell. Nanoindentation tracks hardness and elastic modulus at varying depths while Raman and infrared spectra check for chemical shifts in selected materials. A reader would care because 3D-printed objects are now placed outdoors, and material choice determines whether parts last years or fail early. The central finding is that PLA and PC show the least change, ABS and HIPS degrade through the thickness, and PETG effects stay shallow.

Core claim

After 7744 consecutive hours of UV radiation, PLA and PC exhibit the highest resistance with no significant shifts in mechanical properties; ABS and HIPS display clear changes even at greater depths that produce embrittlement in ABS; PETG shows mechanical alterations only to depths below 10 micrometers. Raman scattering and infrared absorption confirm the absence of structural change in PLA while revealing differences in characteristic and deformation vibrations for ABS and PETG.

What carries the argument

Nanoindentation to obtain hardness and modulus of elasticity depth profiles on FFF-printed samples, supplemented by Raman scattering and infrared absorption spectroscopy for structural insight.

If this is right

  • PLA and PC retain hardness and elastic modulus after long UV exposure and can be selected for sun-exposed 3D-printed parts.
  • ABS undergoes embrittlement from property changes that extend past the surface layer.
  • HIPS shows mechanical degradation at greater depths under the same conditions.
  • PETG mechanical changes remain limited to depths under 10 micrometers.
  • Vibrational spectra detect the structural basis for the observed mechanical shifts in ABS and PETG.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Material selection for outdoor 3D prints could start with PLA or PC to reduce replacement frequency.
  • The shallow depth of PETG damage suggests surface coatings might protect other polymers in similar settings.
  • Tests that combine UV with mechanical stress during exposure could change the observed ranking of the five materials.
  • Single-factor UV data like these can serve as a baseline before full outdoor weathering trials are run.
  • keywords:[

Load-bearing premise

Nanoindentation measurements on the printed surfaces isolate UV-induced mechanical changes without interference from printing layers, surface roughness, or the controlled cell conditions.

What would settle it

No difference in hardness or modulus between exposed and unexposed PLA or PC samples after 7744 hours, or mechanical changes detected below 10 micrometers in PETG, would contradict the reported resistance ordering.

read the original abstract

This article focuses on the influence of long-term UV radiation exposure on mechanical and structural properties of selected polymeric materials (PLA, ABS, PC, PETG, HIPS) prepared using 3D-print based Fused Filament Fabrication (FFF) method. Existing research in the field of polymers weathering has been focused more on the combined effects so far, moreover on time scales not exceeding units of months. However, it is important to separate individual effects to understand the dynamics of material changes and design strategies to improve material resistance. Our research thus focuses on UV-affected ageing of the selected polymers for time duration exceeding 10 months (7744 consecutive hours, i.e. 322 days), performed in an environmental cell with controlled humidity and temperature. Mechanical properties were evaluated by a locally sensitive nanoindentation method. Surface properties, depth property profiles, and creep were studied as well. Hardness and modulus of elasticity data were obtained for a wide range of samples. Based on our analysis of mechanical properties, the highest UV resistances are characteristic for PLA and PC. On the contrary, noticeable changes of mechanical properties occur in the ABS and HIPS samples (even at greater depths), leading to an embrittlement of the former material. Changes in mechanical properties even in strongly affected samples (PETG) were only evident to depths <10 um. For the selected samples (PLA, ABS, PETG), vibrational spectroscopies (Raman scattering and infrared absorption) were exploited to gain a deeper insight into polymers structural changes. Vibrational spectra supported the results of mechanical properties tests: while PLA revealed no significant changes from the structural viewpoint; ABS and PETG showed differences in characteristic as well as deformation vibrations.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

1 major / 2 minor

Summary. The manuscript examines the photooxidative ageing of FFF 3D-printed polymers (PLA, ABS, PETG, HIPS, PC) under long-term UV exposure (7744 hours / 322 days) in a controlled environmental cell. Nanoindentation is used to quantify changes in hardness, elastic modulus, surface properties, depth profiles, and creep; vibrational spectroscopy (Raman, IR) is applied to a subset (PLA, ABS, PETG) to assess structural changes. The central claim is that PLA and PC show the highest UV resistance, ABS and HIPS exhibit noticeable mechanical changes even at greater depths (with embrittlement in ABS), and PETG changes are confined to depths <10 μm, with spectroscopy supporting limited structural alteration in PLA versus changes in ABS and PETG.

Significance. If the nanoindentation data reliably isolate UV-induced effects, the work supplies valuable long-duration experimental data on UV resistance of additively manufactured polymers under controlled humidity and temperature. The extended timescale (exceeding typical studies) and dual mechanical-spectroscopic approach are strengths that could guide material selection for outdoor 3D-printed components. The paper also ships direct experimental reporting without fitted models or free parameters.

major comments (1)
  1. [Nanoindentation / mechanical properties results] Nanoindentation section / depth-profile results: The ranking of UV resistance (PLA/PC highest; ABS/HIPS embrittlement at depth; PETG <10 μm) rests on hardness and modulus measurements performed on as-printed surfaces. The manuscript does not report cross-section preparation, polishing, or statistical mapping to decouple UV photooxidation from FFF-induced spatial heterogeneity (layer interfaces, raster orientation, surface topography). Without such controls, the observed depth-limited changes and embrittlement conclusions risk confounding with pre-existing printing artifacts, undermining the attribution to UV alone.
minor comments (2)
  1. [Title] Title lists PET while abstract and text consistently refer to PETG; this nomenclature inconsistency should be corrected for clarity.
  2. [Abstract / Results] The abstract states that hardness and modulus data were obtained but does not mention reported sample sizes, number of indents per condition, or error bars; these details should be added to the results section for reproducibility.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for their constructive comments and the opportunity to clarify our methodology. We respond to the single major comment below.

read point-by-point responses

  1. Referee: [Nanoindentation / mechanical properties results] Nanoindentation section / depth-profile results: The ranking of UV resistance (PLA/PC highest; ABS/HIPS embrittlement at depth; PETG <10 μm) rests on hardness and modulus measurements performed on as-printed surfaces. The manuscript does not report cross-section preparation, polishing, or statistical mapping to decouple UV photooxidation from FFF-induced spatial heterogeneity (layer interfaces, raster orientation, surface topography). Without such controls, the observed depth-limited changes and embrittlement conclusions risk confounding with pre-existing printing artifacts, undermining the attribution to UV alone.

    Authors: We thank the referee for raising this methodological point. Nanoindentation was performed directly on the UV-exposed as-printed surfaces, with depth profiles generated by varying maximum load to probe different penetration depths from the surface. Multiple indents were acquired per sample at different surface locations to provide averaging over local topography and raster variations, although the manuscript text does not explicitly quantify the number of measurements or their spatial distribution. The reported depth dependence—changes confined to <10 μm in PETG while extending deeper in ABS and HIPS—matches the expected UV attenuation lengths in these polymers and is inconsistent with bulk printing artifacts, which would appear uniformly across the sample thickness. All specimens were printed under identical conditions from the same filament batches. We nevertheless agree that explicit cross-sectional polishing and mapping would strengthen the separation of surface-specific UV effects from printing heterogeneity. We will therefore revise the manuscript to (i) detail the indentation statistics and locations, (ii) add a dedicated paragraph discussing potential printing artifacts and why the observed depth profiles support UV attribution, and (iii) note the absence of cross-section data as a limitation while outlining how future work could address it. revision: partial

Circularity Check

0 steps flagged

No circularity: purely experimental reporting of measured properties

full rationale

The paper reports direct experimental measurements (nanoindentation hardness/modulus depth profiles, creep, Raman/IR spectra) on UV-exposed FFF samples over 7744 hours. No equations, models, fitted parameters, or derivations appear in the provided text. The central ranking of UV resistance (PLA/PC highest; ABS/HIPS embrittlement; PETG <10 µm) is an interpretation of raw data, not a reduction to any input by construction or self-citation. No load-bearing steps match any enumerated circularity pattern.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

This is an empirical experimental study; no free parameters, axioms, or invented entities are introduced beyond standard materials science assumptions.

pith-pipeline@v0.9.1-grok · 5874 in / 1197 out tokens · 37047 ms · 2026-06-30T17:08:31.064886+00:00 · methodology

discussion (0)

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Works this paper leans on

124 extracted references

  1. [1]

    Top 15 Best DIY 3D Printer Kits

    Martel, A. Top 15 Best DIY 3D Printer Kits. 2021 [cited 2022 16.3.2022]; 3Dnatives is the largest international online media platform on 3D printing and its applications. With its in- depth analysis of the market, 3Dnatives gets over 1 million unique visitors per month and is currently available in English, French, Spanish, and German.]. Available from: h...

    2021

  2. [2]

    RepRap is humanity's first general-purpose self-replicating manufacturing machine

    Bowyer, A. RepRap is humanity's first general-purpose self-replicating manufacturing machine. [webpage] 2004 [cited 2021 1.1.]; RepRap community wiky page]. Available from: https://reprap.org/wiki/RepRap

    2004

  3. [3]

    Polymers, 2021

    Amza, C.G., et al., Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers. Polymers, 2021. 13(23): p. 4132

    2021

  4. [4]

    Polymers,

    Amza, C.G., et al., Aging of 3D Printed Polymers under Sterilizing UV-C Radiation. Polymers,

  5. [5]

    Sri-Amphorn, and A

    Abeykoon, C., P. Sri-Amphorn, and A. Fernando, Optimization of fused deposition modeling parameters for improved PLA and ABS 3D printed structures. International Journal of Lightweight Materials and Manufacture, 2020. 3(3): p. 284-297

    2020

  6. [6]

    Starter Temperatures & Printing Guide

    Filaments.ca. Starter Temperatures & Printing Guide. 2015 [cited 2015 January 23, 2015]; Available from: https://filaments.ca/pages/temperature-guide

    2015

  7. [7]

    Materials

    RepRap. Materials. 2014 [cited 2021 27. 8. 2021]; Web page of RepRap community]. Available from: https://reprap.org/wiki/Materials

    2014

  8. [8]

    Open Engineering, 2021

    Kristiawan, R.B., et al., A review on the fused deposition modeling (FDM) 3D printing: Filament processing, materials, and printing parameters. Open Engineering, 2021. 11(1): p. 639-649

    2021

  9. [9]

    Filament Properties Table

    Simplify3D. Filament Properties Table. 2021 [cited 2021 27. 8. 2021]; Available from: https://www.simplify3d.com/support/materials-guide/properties-table/

    2021

  10. [10]

    3D printing materials - The ultimate guide

    All3DP. 3D printing materials - The ultimate guide. All about 3D printing 2021 [cited 2021 27

    2021

  11. [11]

    2021]; Available from: https://all3dp.com/1/3d-printing-materials-guide-3d-printer- material/

    2021

  12. [12]

    International Journal of Engineering and Advanced Technology, 2019

    Shabana, S., et al., Evaluating the Mechanical Properties of Commonly Used 3d Printed ABS and PLA Polymers with Multi Layered Polymers. International Journal of Engineering and Advanced Technology, 2019. 8(6): p. 2351-2356

    2019

  13. [13]

    Kutz, Editor

    Kazmer, D., 28 - Three-Dimensional Printing of Plastics, in Applied Plastics Engineering Handbook (Second Edition), M. Kutz, Editor. 2017, William Andrew Publishing. p. 617-634

    2017

  14. [14]

    58(1): p

    Mulder, K.F., Sustainable Consumption and Production of Plastics? Technological Forecasting and Social Change, 1998. 58(1): p. 105-124

    1998

  15. [15]

    Fan, and P

    Klemeš, J.J., Y.V. Fan, and P. Jiang, Plastics: friends or foes? The circularity and plastic waste footprint. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2021. 43(13): p. 1549-1565

    2021

  16. [16]

    Ross, S. and D. Evans, The environmental effect of reusing and recycling a plastic-based packaging system. Journal of Cleaner Production, 2003. 11(5): p. 561-571

    2003

  17. [17]

    Gerngross, T.U. and S.C. Slater, how green are green plastics? Scientific American, 2000. 283(2): p. 36-41. 30

    2000

  18. [18]

    Chemical Engineering Journal, 2022

    Chen, G., et al., Scalable, strong and water-stable wood-derived bioplastic. Chemical Engineering Journal, 2022. 439: p. 135680

    2022

  19. [19]

    Journal of Bioresources and Bioproducts, 2022

    Zhang, Y., et al., Molded fiber and pulp products as green and sustainable alternatives to plastics: A mini review. Journal of Bioresources and Bioproducts, 2022. 7(1): p. 14-25

    2022

  20. [20]

    Industrial Crops and Products, 2022

    Zhu, Z., et al., High-strength, lightweight and sustainable lignin contained cellulose nanofiber bulk materials for plastic replacement. Industrial Crops and Products, 2022. 185: p. 115106

    2022

  21. [21]

    Li, T., et al., Developing fibrillated cellulose as a sustainable technological material. Nature,

  22. [22]

    Agarwal, S. and R.K. Gupta, 29 - Plastics in Buildings and Construction, in Applied Plastics Engineering Handbook (Second Edition), M. Kutz, Editor. 2017, William Andrew Publishing. p. 635-649

    2017

  23. [23]

    Singh, B. and N. Sharma, Mechanistic implications of plastic degradation. Polymer Degradation and Stability, 2008. 93(3): p. 561-584

    2008

  24. [24]

    International Polymer Science and Technology, 2003

    Ronkin, G.M., New Corrosion and Heat Resistant Elastic Polymeric Materials for the Chemical Industry. International Polymer Science and Technology, 2003. 30(1): p. 1-20

    2003

  25. [25]

    Sommer, and E

    Kämpf, G., K. Sommer, and E. Zirngiebl, Studies in accelerated weathering. Part I. Determination of the activation spectrum of photodegradation in polymers. Progress in Organic Coatings, 1991. 19(1): p. 69-77

    1991

  26. [26]

    Plastics Design Library, ed

    Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering. Plastics Design Library, ed. Christopher C. White, Kenneth M. White, and J.E. Pickett. 2018, Elsevier: William Andew Applied Science Publishers. 328

    2018

  27. [27]

    Comptes Rendus Chimie, 2006

    White, J.R., Polymer ageing: physics, chemistry or engineering? Time to reflect. Comptes Rendus Chimie, 2006. 9(11): p. 1396-1408

    2006

  28. [28]

    White, J.R. and A. Turnbull, Weathering of polymers: mechanisms of degradation and stabilization, testing strategies and modelling. Journal of Materials Science, 1994. 29: p. 584- 613

    1994

  29. [29]

    Polymer Testing, 2020

    Pertin, T., et al., Investigation of nanoindentation as a fast characterization tool for polymer degradation study. Polymer Testing, 2020. 81: p. 106194

    2020

  30. [30]

    Journal of King Saud University - Science, 2021

    Zeenat, et al., Plastics degradation by microbes: A sustainable approach. Journal of King Saud University - Science, 2021. 33(6): p. 101538

    2021

  31. [31]

    Balundgi, and P.E

    Aminabhavi, T.M., R.H. Balundgi, and P.E. Cassidy, A Review on Biodegradable Plastics. Polymer-Plastics Technology and Engineering, 1990. 29(3): p. 235-262

    1990

  32. [32]

    Ramani, R. and C. Ranganathaiah, Degradation of acrylonitrile-butadiene-styrene and polycarbonate by UV irradiation. Polymer Degradation and Stability, 2000. 69(3): p. 347-354

    2000

  33. [33]

    Jennings, K.R., Spectrometric identification of organic compounds (Fifth Edition) R. M. SILVERSTEIN, G. C. BASSLER AND T. C. MORRILL. Wiley, New York, 1991. No. of pages: 430. ISBN 0471 63404 2. Price: £50.25, $76.10. Organic Mass Spectrometry, 1991. 26(9): p. 813- 813

    1991

  34. [34]

    Brennan, P.J. and C. Fedor. Sunlight , UV , & Accelerated Weathering. 2006

    2006

  35. [35]

    Polymer, 1985

    Narkis, M., et al., Irradiation effects on polycaprolactone. Polymer, 1985. 26(1): p. 50-54

    1985

  36. [36]

    Journal of Polymers and the Environment, 2002

    Feldman, D., Polymer Weathering: Photo-Oxidation. Journal of Polymers and the Environment, 2002. 10(4): p. 163-173

    2002

  37. [37]

    Rickerby, D.S. and P.J. Burnett, The wear and erosion resistance of hard PVD coatings. Surface and Coatings Technology, 1987. 33(0): p. 191-211

    1987

  38. [38]

    Microporous and Mesoporous Materials, 2006

    Brabec, L., et al., Hardness and elastic modulus of silicalite-1 crystal twins. Microporous and Mesoporous Materials, 2006. 94(1–3): p. 226-233

    2006

  39. [39]

    Beake, B.D. and J.F. Smith, High-temperature nanoindentation testing of fused silica and other materials. Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, 2002. 82(10 SPEC.): p. 2179-2186

    2002

  40. [40]

    Barbu, A. and I. Bratu, Structural investigations of UV-irradiated packaging polymeric foils. Journal of Molecular Structure, 1997. 410-411: p. 229-231. 31

    1997

  41. [41]

    Day, and D.M

    Blais, P., M. Day, and D.M. Wiles, Photochemical degradation of poly(ethylene terephthalate). IV. Surface changes. Journal of Applied Polymer Science, 1973. 17(6): p. 1895-1907

    1973

  42. [42]

    Chemosphere, 2004

    Copinet, A., et al., Effects of ultraviolet light (315 nm), temperature and relative humidity on the degradation of polylactic acid plastic films. Chemosphere, 2004. 55(5): p. 763-773

    2004

  43. [43]

    Tiganis, and L.S

    Davis, P., B.E. Tiganis, and L.S. Burn, The effect of photo-oxidative degradation on fracture in ABS pipe resins. Polymer Degradation and Stability, 2004. 84(2): p. 233-242

    2004

  44. [44]

    Day, M. and D.M. Wiles, Photochemical degradation of poly(ethylene terephthalate). I. Irradiation experiments with the xenon and carbon arc. Journal of Applied Polymer Science,

  45. [45]

    AIP Conference Proceedings, 2017

    Podzorova, M.V., et al., Influence of ultraviolet on polylactide degradation. AIP Conference Proceedings, 2017. 1909(1): p. 020173

    2017

  46. [46]

    Botelho, and A.V

    Santos, R.M., G.L. Botelho, and A.V. Machado, Artificial and natural weathering of ABS. Journal of Applied Polymer Science, 2010. 116(4): p. 2005-2014

    2010

  47. [47]

    PLOS ONE, 2019

    Gok, A., et al., Temporal evolution and pathway models of poly(ethylene-terephthalate) degradation under multi-factor accelerated weathering exposures. PLOS ONE, 2019. 14(2): p. e0212258

    2019

  48. [48]

    Polymer Degradation and Stability, 2017

    Lesaffre, N., et al., Recent advances on the ageing of flame retarded PLA: Effect of UV-light and/or relative humidity. Polymer Degradation and Stability, 2017. 139: p. 143-164

    2017

  49. [49]

    Science of The Total Environment, 2021

    Miranda, M.N., et al., Aging assessment of microplastics (LDPE, PET and uPVC) under urban environment stressors. Science of The Total Environment, 2021. 796: p. 148914

    2021

  50. [50]

    Materials Research, 2015

    Pires, H., et al., Effect of Weathering and Accelerated Photoaging on PET/PC (80/20 wt/wt%) Melt Extruded Blend. Materials Research, 2015. 18: p. 763-768

    2015

  51. [51]

    Romero-Sánchez, M.D. and J.M. Martín-Martínez, Ultrasonic cleaning of SBR rubber to improve the performance of subsequent plasma torch treatment. Journal of Adhesion Science and Technology, 2005. 19(11): p. 927-946

    2005

  52. [52]

    Solar Energy Materials and Solar Cells, 2016

    Lin, C.-C., et al., Depth profiling of degradation of multilayer photovoltaic backsheets after accelerated laboratory weathering: Cross-sectional Raman imaging. Solar Energy Materials and Solar Cells, 2016. 144: p. 289-299

    2016

  53. [53]

    Journal of Applied Polymer Science, 2012

    Siddhartha, et al., Effect of cobalt-60 γ radiation on the physical and chemical properties of poly(ethylene terephthalate) polymer. Journal of Applied Polymer Science, 2012. 125(5): p. 3575-3581

    2012

  54. [54]

    Multi- scale approach of homogeneous and heterogeneous polymerization processes

    Brun, N., et al., In situ monitoring of styrene polymerization using Raman spectroscopy. Multi- scale approach of homogeneous and heterogeneous polymerization processes. Journal of Raman Spectroscopy, 2013. 44(6): p. 909-915

    2013

  55. [55]

    Advanced Functional Materials, 2005

    Yang, P., et al., Facile Preparation of a Patterned, Aminated Polymer Surface by UV-Light- Induced Surface Aminolysis. Advanced Functional Materials, 2005. 15(9): p. 1415-1425

    2005

  56. [56]

    Plasma Processes and Polymers, 2020

    Mikeš, J., et al., 3D printing materials for generators of active particles based on electrical discharges. Plasma Processes and Polymers, 2020. 17(1): p. 1900150

    2020

  57. [57]

    Journal of Materials Science, 2005

    Ołdak, D., et al., Photo- and Bio-Degradation Processes in Polyethylene, Cellulose and their Blends Studied by ATR-FTIR and Raman Spectroscopies. Journal of Materials Science, 2005. 40(16): p. 4189-4198

    2005

  58. [58]

    Part Ⅱ: Molecular structures and depth profile

    Cai, G., et al., Degradation of fluorinated polyurethane coating under UVA and salt spray. Part Ⅱ: Molecular structures and depth profile. Progress in Organic Coatings, 2018. 124: p. 25-32

    2018

  59. [59]

    Chemical Engineering Journal, 2020

    Tawiah, B., et al., Microporous boron based intumescent macrocycle flame retardant for poly(lactic acid) with excellent UV protection. Chemical Engineering Journal, 2020. 402: p. 126209

    2020

  60. [60]

    Polymer Degradation and Stability, 2021

    Marin, E., et al., UV-curing and thermal ageing of methacrylated stereo-lithographic resin. Polymer Degradation and Stability, 2021. 185: p. 109503

    2021

  61. [61]

    What Is PLA and What Is It Made Of? 2021 [cited 2021 27

    All3DP. What Is PLA and What Is It Made Of? 2021 [cited 2021 27. 8. 2021]; Available from: https://all3dp.com/2/is-pla-biodegradable-what-you-really-need-to-know/. 32

    2021

  62. [62]

    Mélanie Gardette, S.T., Jean-Luc Gardette, Marius Murariu, Phillipe Dubois, Photooxidation of polylactide/calcium sulphate composites. 2011

    2011

  63. [63]

    Molecules, 2023

    Ceretti, D.V.A., et al., Molecular Pathways for Polymer Degradation during Conventional Processing, Additive Manufacturing, and Mechanical Recycling. Molecules, 2023. 28(5)

    2023

  64. [64]

    Macromolecules, 2002

    Kruse, T.M., et al., Mechanistic Modeling of Polymer Degradation: A Comprehensive Study of Polystyrene. Macromolecules, 2002. 35(20): p. 7830-7844

    2002

  65. [65]

    Polymer Degradation and Stability, 1999

    Wilkie, C.A., TGA/FTIR: an extremely useful technique for studying polymer degradation. Polymer Degradation and Stability, 1999. 66(3): p. 301-306

    1999

  66. [66]

    Polymer Degradation and Stability, 2020

    González-López, M.E., et al., Accelerated weathering of poly(lactic acid) and its biocomposites: A review. Polymer Degradation and Stability, 2020. 179: p. 109290

    2020

  67. [67]

    Adeniyi, J.B. and E.G. Kolawole, Thermal and photo-degradation of unstabilized ABS. European Polymer Journal, 1984. 20(1): p. 43-47

    1984

  68. [68]

    Prasad, A.V. and R.P. Singh, Recent Developments in the Degradation and Stabilization of High-Impact Polystyrene. Journal of Macromolecular Science, Part C, 1997. 37(4): p. 581-598

    1997

  69. [69]

    Journal of Materials Research, 2012

    Huang, C.-C., et al., Nanoindentation creep in polycarbonate and syndiotactic polystyrene. Journal of Materials Research, 2012. 27(21): p. 2746-2751

    2012

  70. [70]

    Diepens, M. and P. Gijsman, Photodegradation of bisphenol A polycarbonate. Polymer Degradation and Stability, 2007. 92(3): p. 397-406

    2007

  71. [71]

    Ram, and S

    Sherman, E.S., A. Ram, and S. Kenig, Tensile failure of weathered polycarbonate. Polymer Engineering & Science, 1982. 22(8): p. 457-465

    1982

  72. [72]

    Applied Mechanics and Materials, 2013

    Ge, Y., et al., Structure and Properties of Bisphenol a Polycarbonate Exposed to Ultraviolet. Applied Mechanics and Materials, 2013. 377: p. 255-260

    2013

  73. [73]

    Accelerated weathering testing & corrosion chambers

    Q-Lab. Accelerated weathering testing & corrosion chambers. 2020 [cited 2020 6.10.]; Available from: https://www.q-lab.com/

    2020

  74. [74]

    Opíchal, A., Řízení a automatizace procesů pomocí distribuovaných sítí systémů Siemens 2016, Univerzita Palackého v Olomouci: theses.cz

    2016

  75. [75]

    Briscoe, B.J. and K.S. Sebastian, The elastoplastic response of poly(methyl methacrylate) to indentation. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1996. 452(1946): p. 439-457

    1996

  76. [76]

    Oliver, W.C. and G.M. Pharr, An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. Journal of Materials Research, 1992. 7: p. 1564-1583

    1992

  77. [77]

    Standardization, Editor

    ISO 14577-1:2015 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 1: Test method, I.O.f. Standardization, Editor. 2015. p. 46

    2015

  78. [78]

    Goodall, R. and T.W. Clyne, A critical appraisal of the extraction of creep parameters from nanoindentation data obtained at room temperature. Acta Materialia, 2006. 54(20): p. 5489- 5499

    2006

  79. [79]

    Al-Haik, and V

    Ctvrtlik, R., M. Al-Haik, and V. Kulikovsky, Mechanical properties of amorphous silicon carbonitride thin films at elevated temperatures. Journal of Materials Science, 2015. 50(4): p. 1553-1564

    2015

  80. [80]

    and C.-S

    Alisafaei, F. and C.-S. Han, Indentation Depth Dependent Mechanical Behavior in Polymers. Advances in Condensed Matter Physics, 2015. 2015(1): p. 391579

    2015

Showing first 80 references.