嵌段共聚物的静电纺丝法制备纳米碳纤维  

Preparation of Carbon Nanofiber via Electrospinning of Block Copolymer

作　　者：顾书英[1,2] 刘玲玲[2] 高偰峰 刘涛[2] 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,上海201804 [2]同济大学材料科学与工程学院,上海201804

出　　处：《功能高分子学报》2013年第4期365-369,375,共6页Journal of Functional Polymers

基　　金：国家"十二五"科技支撑计划(2012BAI17B05)

摘　　要：用原子转移自由基聚合(ATRP)法合成了聚丙烯腈-聚丙烯酸丁酯嵌段共聚物(PAN-bPBA),用核磁共振、凝胶色谱、热分析及原子力显微镜等研究了嵌段共聚物的结构、热性能及相结构,利用静电纺丝制备了纳米纤维原丝,对原丝进行稳定化、碳化制备纳米碳纤维。结果表明:嵌段共聚物具有微相分离结构;静电纺丝得到了直径均一具有微相分离结构的纳米纤维;稳定化、碳化后得到多孔纳米碳纤维,孔的贯穿性可以通过调节PAN和PBA链段的质量比来控制。Polyacrylonitrile-block-poly（butyl acrylate） （PAN-b-PBA） was synthesized by atom transfer radical polymerization （ATRP）. The structures, thermal property and microphase-separated structures of PAN-b-PBA were investigated using Nuclear Magnetic Resonance （NMR）, Gel Permeation Chromatography （GPC）, Thermal Analysis （TA） and Atomic Force Microscopy （AFM）, et al. Nanofiber precursors were fabricated by electrospinning. Results showed that block copolymer PAN-b-PBA had microphase separated structure. As-spun nanofiber precursors with uniform diameters and microphase separated structures were obtained. Nanoporous carbon fibers were obtained via stabilization and carbonization of the electrospun precursors. The connexity of the pores can be adjusted by controlling the mass ratio of PAN block to PBA block.

关 键 词：嵌段共聚物 静电纺丝 微相分离 纳米碳纤维 原子力显微镜 

分 类 号：TQ342[化学工程—化纤工业]