摘要
采用自制的熔体同轴静电纺丝装置,通过控制壳层聚丙烯(PP)与核层聚乳酸(PLA)+聚乙二醇(PEG)的流量大小,制备不同直径、不同结构和不同热焓的核壳结构纤维。研究结果表明,在总流量不变的情况下,核层PLA+PEG流量增加,获得的纤维直径增大,1g/h时平均直径为2.4μm,5g/h时为6μm;PLA+PEG与PP流量相差越大,纤维直径越不均匀,内外层结构也越不均匀;PLA+PEG流量增大,制备的纤维热焓增大。为获得直径均匀、结构均匀、热焓较大的核壳结构超细纤维,PLA+PEG与PP流量比值控制在1~2倍较佳。
Based on self-made coaxial melt electrospinning device,the coaxial fiber with different diameters,different structures and different enthalpy was prepared by controlling the flow rate of PP and PLA+PEG. The results show that the increase of PLA+PEG flow can increase the fiber diameter. When PLA+PEG flow is 1 g/h,the average diameter of core-shell fiber is 2.4 μm,and when PLA+PEG flow is 5 g/h,the average diameter is 6 μm. The increase of the difference between PLA+PEG and PP flow will lead to uniform fibers. When the PLA+PEG flow increases,the enthalpy of fiber increases. Therefore,in order to prepare coaxial fibers with uniform diameter,good structure and high enthapy,the ratio of the PLA+PEG and the PP flow should be controlled in 1–2 times.
作者
何万林
丁玉梅
马小路
秦永新
杨卫民
谭晶
李好义
He Wanlin;Ding Yumei;Ma Xiaolu;Qin Yongxin;Yang Weimin;Tan Jing;Li Haoyi(College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2016年第11期48-52,共5页
Engineering Plastics Application
基金
国家科技支撑计划项目(2015BAE01B00)
北京市自然科学基金项目(2141002)
关键词
同轴静电纺丝
核壳结构
超细纤维
coaxial electrospinning
core-shell structure
ultrafine fiber