PVDF-g-PMMA/POSS纳米纤维膜的制备与表征  

Preparation and characterization of PVDF-g-PMMA/POSS nanofiber membrane

作　　者：宋晓艳[1] 丁万庆[1] 杨飞[1] 李涛[1] 程博闻[2] 

机构地区：[1]天津工业大学材料科学与工程学院,天津300387 [2]天津工业大学改性与功能纤维天津市重点实验室,天津300387

出　　处：《天津工业大学学报》2015年第1期12-16,共5页Journal of Tiangong University

基　　金：国家自然科学基金(51103103);国家高技术研究发展计划项目(2007AA03Z359)

摘　　要：通过活性自由基聚合(ATRP)的方法制备了聚偏氟乙烯-g-聚甲基丙烯酸甲酯(PVDF-g-PMMA)共聚物,其接枝率为10.2%.采用静电纺丝法制备了PVDF-g-PMMA/POSS纳米纤维复合膜,并研究了POSS的含量对其形态、机械性能和晶体结构变化的影响.结果表明:随着POSS的加入,纳米纤维表面粗糙度增加,纤维平均直径减小,复合膜的结晶度最大降低了13.0%,其机械性能和初始模量有不同程度的增加,且当POSS质量分数为2%时,拉伸强度达到了8.01 MPa.The copolymer of PVDF-g-PMMA was synthesized by atom transfer radical polymerization（ATRP）and the extentof grafting was 10.2%. Then, PVDF-g-PMMA/POSS nanofibrous membranes were prepared through electrospunprocess. The effect of POSS on morphology, mechanical and the change of crystal structure of polyurethane fiberswas carefully investigated. In comparison with the pure PVDF-g-PMMA nanofibers, the AFD was lesser andcrystallinity of PVDF-g-PMMA/POSS membranes decreased 13.0%. Meanwhile, the composite nanofibers haverougher surface and better mechanical properties with increasing POSS content, when the POSS was 2%, thetensile strength reached 8.01 MPa.

关 键 词：PVDF-g-PMMA POSS ATRP 静电纺 纳米纤维膜 

分 类 号：TS102.54[轻工技术与工程—纺织工程]