Photostabilization of Poly(butylene adipate-<italic style="font-style: italic">co</italic>-terephthalate) (PBAT) Films with Hindered Amine Light Stabilizers: Performance Evaluation and Mechanistic Insights

Yang Wang; Wen-Qing He; Su-Nan Tian; Yue Wang; Run-Hao Bai; Aurore Richel; Qiu-Yun Liu; Jia-Lei Liu; Cai-Bin Li; He-Qing Cai; Zhi-Chao Zhen; Qi Liu

doi:10.1007/s10118-026-3554-4

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Photostabilization of Poly(butylene adipate-co-terephthalate) (PBAT) Films with Hindered Amine Light Stabilizers: Performance Evaluation and Mechanistic Insights

RESEARCH ARTICLE | Updated：2026-03-26

- Photostabilization of Poly(butylene adipate-co-terephthalate) (PBAT) Films with Hindered Amine Light Stabilizers: Performance Evaluation and Mechanistic Insights
- Chinese Journal of Polymer Science Vol. 44, Issue 4, Pages: 1046-1058(2026)
- Affiliations：
  
  a.Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  b.Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, China
  c.IMDEA Materials Institute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain
  d.Laboratory of Biomass and Green Technologies, University of Liege, Gembloux 2 B-5030, Belgium
  e.The BioComposites Centre, Bangor University, Bangor LL57 2UW, UK
  f.Bijie Tobacco Company of Guizhou Province, Bijie 551700, China
  g.National Engineering Research Center of Engineering Plastics and Ecological Plastics Technical, Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Author bio：
  
  zhenzc@mail.ipc.ac.cn (Z.C.Z.)
  liuqi@caas.cn (Q.L.)
- Funds：
- DOI：10.1007/s10118-026-3554-4
  CLC：
- Received：12 September 2025，
  
  Revised：2025-12-29，
  
  Accepted：16 January 2026，
  
  Online First：11 March 2026，
  
  Published：05 April 2026
- Accepted：
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Wang, Y.; He, W. Q.; Tian, S. N.; Wang, Y.; Bai, R. H.; Richel, A.; Liu, Q. Y.; Liu, J. L.; Li, C. B.; Cai, H. Q.; Zhen, Z. C.; Liu, Q. Photostabilization of poly(butylene adipate-co-terephthalate) (PBAT) films with hindered amine light stabilizers: performance evaluation and mechanistic insights. Chinese J. Polym. Sci. 2026, 44, 1046–1058

Yang Wang, Wen-Qing He, Su-Nan Tian, et al. Photostabilization of Poly(butylene adipate-co-terephthalate) (PBAT) Films with Hindered Amine Light Stabilizers: Performance Evaluation and Mechanistic Insights[J]. Chinese Journal of Polymer Science, 2026, 44(4): 1046-1058. DOI: 10.1007/s10118-026-3554-4.
Wang, Y.; He, W. Q.; Tian, S. N.; Wang, Y.; Bai, R. H.; Richel, A.; Liu, Q. Y.; Liu, J. L.; Li, C. B.; Cai, H. Q.; Zhen, Z. C.; Liu, Q. Photostabilization of poly(butylene adipate-co-terephthalate) (PBAT) films with hindered amine light stabilizers: performance evaluation and mechanistic insights. Chinese J. Polym. Sci. 2026, 44, 1046–1058 DOI： 10.1007/s10118-026-3554-4.

Yang Wang, Wen-Qing He, Su-Nan Tian, et al. Photostabilization of Poly(butylene adipate-co-terephthalate) (PBAT) Films with Hindered Amine Light Stabilizers: Performance Evaluation and Mechanistic Insights[J]. Chinese Journal of Polymer Science, 2026, 44(4): 1046-1058. DOI: 10.1007/s10118-026-3554-4. DOI：

摘要

This study clarifies how different hindered amine light stabilizer (HALS) structures influence PBAT's weather resistance

via

combined structural characterizations and performance change analysis

proposes a rapid method for predicting HALS performance

and provides new ideas for the rational selection of HALS.

Abstract

The application of poly(butylene adipate-

-terephthalate) (PBAT) biodegradable plastics has long been constrained by insufficient light aging resistance. Hindered amine light stabilizers (HALSs)

known as eco-friendly additives

can scavenge free radicals to enhance polymer durability. However

rough choices have resulted in wastage of resources and environmental pressure. Based on the application of plastic films as the background for use

this study systematically evaluates application effects of five HALSs. The films underwent accelerated aging for various durations and were further investigated by a combination of experiments and molecular simulation. Results showed that all HALSs mitigated PBAT light aging

with Chimassorb-944 (UV-944) and Tinuvin-770 (UV-770) performing the best for real applications. Quantum chemical calculation results showed that UV-944 had stronger anti migration ability. After 300 h of aging

films with UV-944 and UV-770 retained superior tensile strength and elongation at break in the transverse direction compared to neat PBAT films. Polymeric HALSs provided better long-term stability than small-molecule ones. Further spectra analysis indicated that stronger C―O bonds in HALS/PBAT composites correlated with improved photostability. This study offers valuable insights into improving weather resistance of PBAT biodegradable films and optimizing

the real application of HALSs.

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Photostabilization of Poly(butylene adipate-co-terephthalate) (PBAT) Films with Hindered Amine Light Stabilizers: Performance Evaluation and Mechanistic Insights

DOI：10.1007/s10118-026-3554-4

摘要

Abstract

关键词

Keywords

references