Bio-based and Biodegradable Electrospun Fibers Composed of Poly(L-lactide) and Polyamide 4

作     者：Tao Chen Guo-Cheng Zhong Yuan-Ting Zhang Li-Ming Zhao Yong-Jun Qiu Tao Chen;Guo-Cheng Zhong;Yuan-Ting Zhang;Li-Ming Zhao;Yong-Jun Qiu

作者机构：School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry CouncilShanghai200237China Shanghai Key Laboratory of Advanced Polymeric MaterialsShanghai200237China School of BiotechnologyEast China University of Science and TechnologyShanghai200237China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2020年第38卷第1期

页      面：53-62,I0006页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：financially supported by the National Key Research and Development Program of China (Nos. 2017YFB0309301 and 2017YFB0309302) the Natural Science Foundation of Shanghai, China (No. 17ZR1407200) 

主　　题：Poly(L-lactide) Polyamide 4 "Click"reaction Electrospinning Fiber 

摘      要：Novel bio-based and biodegradable block copolymers were synthesized by click reaction between poly(L-lactide)(PLLA) and polyamide 4(PA4). Upon tuning the molar mass of PLLA block, the properties of copolymers and electrospun ultrafine fibers were investigated and compared with those of PLLA and PA4 blends. PLLA and PA4 were found incompatible and formed individual crystalline regions, along with reciprocal inhibition in crystallization. Electrospun fibers were highly hydrophobic, even if hydrophilic PA4 was the rich component. The crystallinity of either PLLA or PA4 decreased after electrospinning and PLLA-rich as-spun fibers were almost amorphous. Immersion tests proved that fibers of block copolymers were relatively homogeneous with micro-phase separation between PLLA and PA4. The fibrous structures of copolymers were different from those of the fibers electrospun from blends, for which sheath-core structure induced by macro-phase separation between homopolymers of PLLA and PA4 was confirmed by TEM, EDS, and XPS.