作者：Yang Jinjun, Liang Rong, Chen Yichun, Zhang Chunqiu, Zhang Ruiling, Wang Xiaomin, Kong Rui, Chen Qix
关键字：Crystallization behavior, Crystal morphology, Polymorphism
论文来源：期刊
具体来源：Industrial & Engineering Chemistry Research
发表时间：2017年

In this work, the decamethylenedicarboxylic dibenzoylhydrazide

(DMC-DBH) is attempted as a nucleating agent (NA) to introduce

into the poly(1,4-butylene adipate) (PBA) matrix. Effects of the DMC-DBH

on the PBA, including the crystallization kinetics, crystal morphology,

polymorphic crystalline structure, and biodegradation behaviors, are

investigated by differential scanning calorimetry (DSC), polarized optical

microscopy (POM), wide-angle X-ray diffraction (WAXD), Fourier

transform infrared (FTIR) spectroscopy, and scanning electron microscopy

(SEM). The crystallization temperature and crystallization rate of the PBA

increase upon incorporation of the DMC-DBH. This composite is

characterized by a distinctive shish-kebab structure. The DMC-DBH is

favorable for formation of the PBA α-crystal at markedly lower meltingcrystallization

temperature (Tc), compared to the neat PBA and accelerated

β-to-α phase transition. The biodegradation rate of the PBA decreased upon addition of the DMC-DBH. The mechanisms on the

preferential formation of the PBA α-crystal, accelerated phase transition, and decreased biodegradation rate were also proposed

and discussed.