摘要
引入超声波振动技术对高浓度聚丙烯腈溶液进行静电纺丝实验,以期在提高纤维力学性能的同时改善高浓度溶液的静电可纺性。通过各种测试和表征分析,研究了不同振动时间对高浓度PAN溶液性质及对纤维膜结构和性能的影响。结果表明:经过超声处理后,PAN溶液的粘度和表面张力显著降低,可纺性得到提高;纤维直径和细度不匀率均有所降低,纤维表面缺陷减少。短时间的振动可使纤维膜的孔径显著减小且孔隙分布变窄,使得纤维间排列更紧密,纤维膜的强度和刚度也都得以提高。
The influences of ultrosonic oscillation on the properties of high-concentration polyacrylonitrile（PAN）so- lutions as well as surface morphology and performance of PAN fibrous mats were investigated. The results indicated that： （1） under the influences of the ultrosonic oscillation, the vibrorheological effects appeared not only in dramatic reduction in viscosity and surface tension, but also in improvement of spinnability of polymer solutions; （2）average diameter and uni- formity of the resulted fibers as well as the surface flaws in fibers were all decreased with the application of vibration; （3） pore size of the fibrous films was reduced, pore size distribution was narrowed, and fibers were more closely packed. Fur- thermore, the tensile strength and Young＇s modulus of fibrous membranes were substantially increased with application of short-time vibration.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第10期118-120,127,共4页
New Chemical Materials
基金
生态教育部重点实验室(江南大学)开放性课题基金(KLET1007)
东华大学纤维材料改性国家重点实验室开放性课题基金(LK1005)
关键词
静电纺丝
纤维膜
聚丙烯腈
超声波振动
electrospinning, fibrous membrane, polyacrylonitrile （PAN）, ultrasonic vibration
