文献类型：期刊文献

英文题名：Effect of aliphatic segment length and content on crystallization and biodegradation properties of aliphatic-aromatic co-polyesters

作者：Chen, Meng[1];Cai, Chunhua[1];Bao, Jie[1];Du, Yuliu[2];Gao, Hongbing[2];Liu, Xiucai[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Shanghai Cathay Biotechnol Co Ltd, Shanghai 200237, Peoples R China

年份：2022

卷号：203

外文期刊名：POLYMER DEGRADATION AND STABILITY

收录：;EI(收录号：20223012419486);WOS:【SCI-EXPANDED(收录号:WOS:000829728500001)】；

基金：The authors thank the Bio-based Materials Development and Application Foundation, Cathay Industrial Biotechnology (JJHD2018056-1) for the support of this research.

语种：英文

外文关键词：Aliphatic -aromatic co -polyester; Thermal properties; Crystallization; Mechanical properties; Biodegradation

摘要：In this work, dimethyl terephthalate (DMT), 1,4-butanediol (BDO) and different diacids were introduced to investigate the effects of variations in aliphatic chain length and component content in aliphatic aromatic terpolymers on the basic thermal properties, crystalline morphology, mechanical properties and biodegradability of the polyesters. The experimental results from nuclear magnetic resonance (NMR), Fourier-transform infrared spectroscopy (FT-IR) and Gel permeation chromatography (GPC) indicate the successful synthesis of the anticipated aliphatic aromatic co-polyesters. The variation of melting and crystallization temperatures with aliphatic chain segment length and content were analyzed by differential scanning calorimetry (DSC). The Wide-angle X-ray diffraction (WAXD) results suggest that the coexistence of both crystals formed by rigid and flexible chain segments can be achieved by varying the length and component content of the aliphatic chain segments in the co-polyesters. The scanning electron microscopy (SEM) and composting experiment results indicate that the type of crystals formed with the more flexible chain segments and the lower degree of crystallinity have a positive effect on the biodegradability.