Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness <italic style="font-style: italic">via</italic> <italic style="font-style: italic">In situ</italic> Reaction Compatibilization

Shi-Ling Jia; Xiang-Yu Wang; Ye Zhang; Xiang-Yu Yan; Hong-Wei Pan; Yan Zhao; Li-Jing Han; Hui-Liang Zhang; Li-Song Dong; Hui-Xuan Zhang

doi:10.1007/s10118-022-2862-6

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Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization

RESEARCH ARTICLE | Updated：2023-01-18

- Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization
- Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization
- 高分子科学（英文版） 2023年41卷第3期页码：373-385
- Affiliations：
  
  a.Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022, China
  b.School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China
- Author bio：
  
  ljhan@ciac.ac.cn
- Funds：
  
  This work was financially supported by the Science and Technology Development Plan of Jilin Province (No. 20210203199SF).
- DOI：10.1007/s10118-022-2862-6
  中图分类号：
- 收稿：2022-06-16，
  
  修回：2022-7-20，
  
  录用：2022-8-22，
  
  网络首发：2022-10-20，
  
  纸质出版：2023-03-01
- Accepted：
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Jia, S. L.; Wang, X. Y.; Zhang, Y.; Yan, X. Y.; Pan, H. W.; Zhao, Y.; Han, L. J.; Zhang, H. L.; Dong, L. S.; Zhang, H. X. Superior toughened biodegradable poly(L-lactic acid)-based blends with enhanced melt strength and excellent low-temperature toughness via in situ reaction compatibilization. Chinese J. Polym. Sci. 2023, 41, 373–385

Shi-Ling Jia, Xiang-Yu Wang, Ye Zhang, et al. Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization[J]. Chinese Journal of Polymer Science, 2023, 41(3): 373-385. DOI: 10.1007/s10118-022-2862-6.
Jia, S. L.; Wang, X. Y.; Zhang, Y.; Yan, X. Y.; Pan, H. W.; Zhao, Y.; Han, L. J.; Zhang, H. L.; Dong, L. S.; Zhang, H. X. Superior toughened biodegradable poly(L-lactic acid)-based blends with enhanced melt strength and excellent low-temperature toughness via in situ reaction compatibilization. Chinese J. Polym. Sci. 2023, 41, 373–385 DOI： 10.1007/s10118-022-2862-6.

Shi-Ling Jia, Xiang-Yu Wang, Ye Zhang, et al. Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization[J]. Chinese Journal of Polymer Science, 2023, 41(3): 373-385. DOI: 10.1007/s10118-022-2862-6. DOI：

摘要

In this study

PBST and PLLA were melt blended

and ADR was added to improve the compatibility of the blends. As the formation of PLLA-g-PBST copolymer improves the interfacial bonding of the blends

biodegradable materials with excellent mechanical properties at both room temperature and low temperature are prepared.

Abstract

The toughened poly(L-lactic acid)/poly(butylene succinate-butylene terephthalate) (PLLA/PBST) blend with enhanced melt strength and excellent low temperature toughness and strength was prepared by melt compounding through

in situ

compatibilization reaction in presence of multifunctional epoxy compound (ADR). The PLLA/PBST blend was an immiscible system

and the compatibility of the PLLA/PBST blend was improved after adding ADR. FTIR and GPC curves confirmed the formation of the PLLA-

-PBST copolymer

which improved the interfacial bonding of the blend and therefore the PLLA/PBST/ADR blend showed excellent melt strength and mechanical properties. For the PLLA/PBST/ADR blend with 70/30 PLLA/PBST content

the complex viscosity increased significantly with increasing ADR content. Moreover

the tensile strength

elongation at break and impact strength all increased obviously with increasing the ADR content. The elongation at break of the blend reached the maximum value of 392.7%

which was 93.2 times that of neat PLLA. And the impact strength of the blend reached the maximum value of 74.7 kJ/m

which was 21.3 times that of neat PLLA. Interestingly

the PLLA/PBST/ADR blend exhibited excellent low-temperature toughness and strength. At –20 °C

the elongation at break of the PLLA/PBST/ADR blend was as high as 93.2%

and the impact strength reached 18.8 kJ/m

. Meanwhile

the tensile strength of the blend at low temperature was also high (64.7 MPa)

which was beneficial to the application of PLA in the low temperature field. In addition

the PLLA/PBST/ADR blend maintaind good biodegradability

which was of great significance to the wide application of PLLA.

关键词

Keywords

references

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Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization

Superior Toughened Biodegradable Poly(L-lactic acid)-based Blends with Enhanced Melt Strength and Excellent Low-temperature Toughness via In situ Reaction Compatibilization

DOI：10.1007/s10118-022-2862-6

摘要

Abstract

关键词

Keywords

references