作者：Chen Yichun, Wang Siyu, Chen Qixian, Xi Zhilin, .... Yang Jinjun*
关键字：Crystallization behavior, Polymorphism, Enaymatic degradation, PBA
论文来源：期刊
具体来源：European Polymer Journal
发表时间：2015年

Layered metal phosphonate, zinc phenylphosphonate (PPZn) was synthesized and used as

a model benign nucleating agent for poly(butylene adipate) (PBA) to manipulate the

crystallization behavior, polymorphic crystalline structure and biodegradation of PBA.

Upon incorporation of PPZn, the crystallization temperature (Tc) and crystallinity of PBA

increased. Meanwhile, the crystallization rate and spherulite density of PBA increased in

the presence of PPZn, indicating that PPZn has an effective nucleating effect for PBA.

PPZn is favorable for the formation of the PBA a-modification. Furthermore, PPZn would

speed up highly the phase transition of PBA from the b- to a-one. PPZn significantly

suppressed the biodegradation of PBA. Mechanisms for nucleating, preferential formation

of the a-modification, accelerated phase transition and decreased degradation rate of PBA

in the presence of PPZn have also been proposed. It is considered that layered metal

phosphonate material is a new type of benign filler for controlling the polymorphic

crystalline structure and biodegradation rate of the polymer, which is expected to further

modify the property of the polymer and might widen the applications of biodegradable

materials in the environmental and biomedical fields.