柠檬酸对聚l-丙交酯-b-聚乙二醇-b-聚l-丙交酯/热塑性淀粉共混物热、相形态和力学性能的影响

IF 3.2 3区化学 Q2 POLYMER SCIENCE

e-Polymers Pub Date : 2023-01-01 DOI:10.1515/epoly-2023-0057

Yaowalak Srisuwan, Prasong Srihanam, Theeraphol Phromsopha, Yodthong Baimark

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引用次数: 0

摘要

摘要本文研究了聚(l -丙交酯)- b -聚(乙二醇)- b -聚(l -丙交酯)(pla - peg - plla)/热塑性淀粉(TPS)共混物的热、形态和拉伸性能，并对TPS进行了3wt %柠檬酸(CA)处理。研究了pla - peg - plla /CA-TPS比例分别为100/0、90/10、80/20和60/40 (w/w)的共混物，并与不含pla - peg - plla / ca的TPS共混物进行了比较。随着TPS含量的增加，共混物的结晶性降低，热稳定性提高。经CA处理后，共混物的热稳定性得到改善。pla - peg - plla /CA-TPS共混物的相相容性优于pla - peg - plla /CA-free TPS共混物。通过对TPS进行CA处理，提高了共混物的拉伸性能。综上所述，通过对TPS进行CA处理，pla - peg - plla /TPS共混物的热稳定性、相相容性和拉伸性能得到了改善。所得pla - peg - plla /CA-TPS共混物可用于制备可生物降解的柔性生物塑料。

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Effect of citric acid on thermal, phase morphological, and mechanical properties of poly(l-lactide)-b-poly(ethylene glycol)-b-poly(l-lactide)/thermoplastic starch blends

Abstract This work investigated the thermal, morphological, and tensile properties of poly( l -lactide)- b -poly(ethylene glycol)- b -poly( l -lactide) (PLLA-PEG-PLLA)/thermoplastic starch (TPS) blends with 3 wt% citric acid (CA) treatment of TPS. The blends with PLLA-PEG-PLLA/CA-TPS ratios of 100/0, 90/10, 80/20, and 60/40 (w/w) were investigated and compared with PLLA-PEG-PLLA/CA-free TPS blends. Crystallizability of the blends decreased and thermal stability increased as the TPS content increased. The thermal stability of the blends was found to improve after CA treatment of TPS. The PLLA-PEG-PLLA/CA-TPS blends showed better phase compatibility than those of the PLLA-PEG-PLLA/CA-free TPS blends. The tensile properties of the blends were improved by CA treatment of TPS. In conclusion, improvement in thermal stability, phase compatibility, and tensile properties of the PLLA-PEG-PLLA/TPS blends was obtained by CA treatment of TPS. The resulting PLLA-PEG-PLLA/CA-TPS blends could potentially be used to prepare biodegradable and flexible bioplastics.

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来源期刊

e-Polymers 化学-高分子科学

CiteScore

5.90

自引率

10.80%

发文量

审稿时长

6.4 months

期刊介绍： e-Polymers is a strictly peer-reviewed scientific journal. The aim of e-Polymers is to publish pure and applied polymer-science-related original research articles, reviews, and feature articles. It includes synthetic methodologies, characterization, and processing techniques for polymer materials. Reports on interdisciplinary polymer science and on applications of polymers in all areas are welcome. The present Editors-in-Chief would like to thank the authors, the reviewers, the editorial staff, the advisory board, and the supporting organization that made e-Polymers a successful and sustainable scientific journal of the polymer community. The Editors of e-Polymers feel very much engaged to provide best publishing services at the highest possible level.