摘要
针对日益严峻的环境污染问题,生物基聚乳酸(PLA)材料开发成为解决当前环境污染问题的有效途径之一。借助静电纺丝技术,通过改变碳纳米管(CNTs)添加量,制备聚乳酸/碳纳米管(PLA/CNTs)纤维过滤膜,并对其形貌、聚集态结构、亲疏水性、过滤性能等进行研究。结果表明:PLA/CNTs纤维粗细较均匀、表面光滑,且纤维直径随CNTs含量的增加逐渐增大。当纺丝液中CNTs质量分数从0.05%增加到0.85%时,纤维过滤膜应力呈现先增大后减小的趋势,接触角从130.4°下降到122.2°,纤维过滤膜仍表现出疏水特性。同时,PLA/CNTs纤维过滤膜对油性介质过滤效率明显优于盐性介质过滤效率,且对二者的过滤效率均超过90%,可以快速实现油水分离。可为PLA/CNTs纤维过滤膜在空气过滤、油水分离领域应用提供实验数据。
Polylactic acid/carbon nanotubes(PLA/CNTs)fiber membrane is prepared by changing CNTs contents by electrospinning technology,and its morphology,aggregation structure,hydrophilicity hydrophobicity and filtration performance were studied.The results show that PLA/CNTs fiber has uniform thickness and smooth surface,and the fiber diameter increases gradually with the increase of CNTs content.When the content of CNTs in the spinning solution increases from 0.05%to 0.85%,the stress of the fiber membrane increases first and then decreases,and the contact angle decreases from 130.4°to 122.2°.The fiber membranes still show hydrophobic characteristics.At the same time,the filtration efficiency of PLA/CNTs fiber membrane for oily media is significantly better than that for salt media,and the filtration efficiency for both is more than 90%,and realizing oil-water separation quickly,which provides experimental data for the application of PLA/CNTs fiber membrane in the fields of air filtration and oil-water separation.
作者
张硕
赵层层
高国金
明津法
黄晓卫
王雪芳
王娜
宁新
ZHANG Shuo;ZHAO Cengceng;GAO Guojin;MING Jinfa;HUANG Xiaowei;WANG Xuefang;WANG Na;NING Xin(College of Textile&Clothing,Qingdao University,Qingdao,Shandong 266071,China;Industrial Research Institute of Nonwovens&Technical Textiles,Qingdao University,Qingdao,Shandong 266071,China;Shandong Center for Engineered Nonwovens,Qingdao,Shandong 266071,China;State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University,Qingdao,Shandong 266071,China)
出处
《毛纺科技》
CAS
北大核心
2022年第8期98-103,共6页
Wool Textile Journal
基金
生物多糖纤维成形与生态纺织国家重点实验室课题(RZ2000003348)。
关键词
聚乳酸
碳纳米管
过滤膜
过滤效率
油水分离
polylactic acid
carbon nanotubes
filter membrane
filtration efficiency
oil water separation
