Using a Self-assemblable Nucleating Agent to Tailor Crystallization Behavior, Crystal Morphology, Polymorphic Crystalline Structure and Biodegradability of Poly(1,4-butylene adipate).
作者：Yang Jinjun, Liang Rong, Chen Yichun, Zhang Chunqiu, Zhang Ruiling, Wang Xiaomin, Kong Rui, Chen Qix
關(guān)鍵字：Crystallization behavior, Crystal morphology, Polymorphism
論文來源：期刊
具體來源：Industrial & Engineering Chemistry Research
發(fā)表時間：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.