writer：Li Lingling, Linxuan Yang, Tang Jingjing, Yang Jinjun*, Li Wei, Zhou Shanshan, Ma Huimin, Zhu
keywords：Crystallization behavior, Biodegradable polyester, Nucleating agent
source：期刊
specific source：Journal of Macromolecular Science, Part A: Pure and Applied Chemistry
Issue time：2020年

A multiple amides-based linear organic compound (TMC-300) was synthesized and as an efficient nucleator was incorporated into PHBH to fabricate PHBH/TMC-300 composite to investigate effect of TMC-300 on crystallization behavior of PHBH in-depth. Nucleation capacity of TMC-300 on the PHBH is significantly higher than those of two conventional inorganic nucleators. TMC-300 exhibits dual effects on crystallization behavior of PHBH in terms of its weight fraction (fTMC-300). Low fTMC-300 increased substantially crystallization rate, crystallinity and crystal density, and decreased greatly crystallization time of PHBH, but relative higher fTMC-300 hindered slightly crystallization process. Hydrogen bond interaction exists between PHBH and TMC-300 and facilitates excellent dispersion of TMC-300 in PHBH matrix. In-situ FTIR measurement suggests that hydrogen interaction hindered reorganization of ester bond in crystallization process of PHBH. Mechanisms on nucleation of PHBH and effect of TMC-300 on crystallization behavior of PHBH, are proposed and discussed.