熔融静电纺PCL自粘结超细纤维的制备  

Preparation of PCL Self-bonded Ultrafine Fiber Films by Melt-electrospinning

作　　者：王宏[1] 徐阳[1] 聂清欣 李莘[1] 魏取福[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《材料科学与工程学报》2015年第2期235-240,273,共7页Journal of Materials Science and Engineering

基　　金：国家高技术研究发展计划(863)资助项目(2012AA030313);2012江苏科技支持计划(工业)资助项目(SBE201201094)

摘　　要：本文采用熔融静电纺制备聚己内酯(PCL)自粘结超细纤维膜,并对其进行恒温后处理。探讨了主要纺丝工艺参数对PCL纤维直径、纤维间粘结程度(粘结形式、粘结点数目及其分布)的影响以及恒温后处理温度对纤维形貌及热学性质的影响。实验表明,较高的电压与适中的接收距离有利于形成直径较小且粘结度较高的纤维;升高纺丝环境温度,有利于纤维直径的减小及粘结度的增加,但温度过高则无法成纤;喂料气压的增加虽使纤维直径变大,但纤维间粘结度有增加趋势;随着恒温后处理温度的提高,纤维直径基本不变,纤维膜结晶度和粘结点均有所增加。通过纺丝过程工艺与恒温后处理的调控实现自粘结超细纤维的可控制备有望成为增强电纺纤维膜的一种重要手段。Polyeaprolactone （PCL） self-bonded ultrafine fiber films were prepared by melt electrospinning technology. Then the PCL fiber films were treated with thermostatic post-treatment. The effects of the main spinning parameters on the fiber diameters and the bonding degree among the fibers （the bonding forms, the number and distribution of bonding points） were discussed. In addition, the influences of the treated temperature on the morphology and thermal properties of fibers in thermostatic post-treatment process were also investigated. The results showed that the higher voltage with the moderate accepted distance does favor to prepare fine and self-bonded fiber films; improving the environmental temperature is beneficial to fine and bond the fibers, while it will be unable to fiberize at a too high environmental temperature. With the increase of the feed pressure, the fiber diameters become large, while the bonding degree among fibers is enhanced slightly. The crystallization and self-bonded points of fiber films both increase with the rise of the thermostatic post-treatment temperature, meanwhile the fiber diameters almost remain unchanged. The method to prepare the self-bonded ultrafine fiber films through the control of melt-electrospinning process and thermostatic post-treatment is expected to be a significant way for reinforcing the electrospinning fiber films.

关 键 词：熔融静电纺 聚己内酯 工艺调控 恒温后处理 自粘结超细纤维 

分 类 号：TQ342.85[化学工程—化纤工业] TQ342.93