Crystal morphology, crystallization behavior, polymorphic crystalline structure and thermal stability of poly(1,4-butylene adipate) modulated by a oxalamide derivative nucleating agent.
作者：Yang Jinjun, Liang Rong, Kong Rui, Chen Yichun, Wang Xiaomin, Yin Jing, Wan Jiping, Wang Xiaoli, Bi
關(guān)鍵字：Crystal morphology, Polymorphism, Thermal stability
論文來源：期刊
具體來源：Polymer Degradation and Stability
發(fā)表時間：2017年
In this work, a oxalamide derivative, N1,N10-(ethane-1,2-diyl)bis(N2-phenyloxalamide) (EDPO) was synthesized
successfully to prepare the poly(1,4-butylene adipate) PBA/EDPO composite. The EDPO first
crystallized into the rod-like (shish) and induced the PBA crystal aligned perpendicularly to the EDPO rod
axis. As an effective nucleating agent, the EDPO highly increased the crystallization rate and shortened
the crystallization time of the PBA. The EDPO not only facilitated the formation of the PBA a-crystal and
modulated the polymorphic crystalline structure of the PBA, but also accelerated the b-to-a phase
transition of the PBA. Upon the extremely low (such as 0.1%) weight fraction of the EDPO, the thermal
stability of the PBA increased pronouncedly. The mechanisms on the nucleation and growth of the PBA,
the preferential formation of the a-crystal, accelerated phase transition and enhanced thermal stability of
the PBA were also proposed and discussed.