A novel biodegradable poly(propylene carbonate) with enhanced thermal and mechanical properties by incorporating tannic acid
Jianing Yang, Xuhui Zhang*, Ting Li, Yang Wang, Bihua Xia, Jie Jiang, Mingqing Chen, Weifu Dong*
Polym Adv Technol. 2022, 33: 1342-1347 (https://doi.org/10.1002/pat.5579)
为了同时提高二氧化碳基生物降解材料PPC的力学性能、耐热性和生物降解性，本研究将生物基分子单宁酸（TA）引入到PPC中：基于氢键作用，TA在PPC中分散良好且可有效提高PPC的屈服强度；基于酚羟基的抗氧特性，TA可显著提高PPC的热氧稳定性；基于TA的弱酸性和亲水性，TA可提高PPC的生物降解特性。该研究对于促进PPC的实际应用具有重要意义。
Figure (A) Microstructure schematic of PPC/TA composites; (B) FTIR of PPC, PPC75/TA25, PPC50/TA50 and TA; scanning electronmicroscopy (SEM) images of TA power (C), PPC/TA3 (D, D') and PPC/TA9 (E, E') at different magnification
