羟基化氮化硼改性PLA纳米纤维膜的制备及性能研究  

Preparation and property study of hydroxylated boron nitride modified PLA nanofiber membrane

作　　者：王丽[1] 李金强[2] 房志敏 谭文萍 明津法[1,3,4] 王健 WANG Li;LI Jinqiang;FANG Zhimin;TAN Wenping;MING Jinfa;WANG Jian(Qingdao University,Qingdao 266071,China;Shandong Vocational Institute of Fashion Technology,Tai′an 271000,China;Shandong Engineering Research Center for Special Nonwoven Materials,Qingdao 266071,China;State Key Laboratory of Bio‐Fibers and Eco‐Textiles,Qingdao 266071,China)

机构地区：[1]青岛大学,山东青岛266071 [2]山东服装职业学院,山东泰安271000 [3]特型非织造材料山东省工程研究中心,山东青岛266071 [4]生物多糖纤维成形与生态纺织国家重点实验室,山东青岛266071

出　　处：《棉纺织技术》2024年第8期1-7,共7页Cotton Textile Technology

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,ZDKT202109)。

摘　　要：为拓展生物基可降解PLA纳米纤维膜在空气过滤等医疗卫生领域的应用范围,通过机械剥离与功能化改性方法制备羟基化氮化硼(BNO)二维纳米片,并采用静电纺丝工艺制备羟基化氮化硼纳米片改性聚乳酸(PLA/BNO)纳米纤维膜。探讨BNO纳米片的引入对PLA纳米纤维膜的微观结构与形貌、导热性能、力学性能以及空气过滤性能的影响。结果表明:与纯PLA纳米纤维膜相比,PLA/BNO纳米纤维膜的拉伸力学性能以及导热性能显著提高。当纺丝液中BNO纳米片质量分数为0.7%时,风速为0.01 m/s时,PLA/BNO纳米纤维膜的过滤效率为99.97%,品质因子达到最大值0.262 Pa^(-1),阻力压降最小为31 Pa,PLA/BNO纳米纤维膜的拉伸断裂强度以及导热系数较纯PLA纳米纤维膜分别提高27.39%和26.62%。To broaden the utilization of biodegradable PLA nanofiber membranes in medical and health applications such as air filtration,hydroxylated boron nitride(BNO)two-dimensional nanosheets were prepared via mechanical exfoliation and functional modification.Subsequently,hydroxylated boron nitride nanosheet-modified polylactic acid(PLA/BNO)nanofiber membranes were fabricated using electrospinning.The effects of introducing BNO nanosheets on the microstructure,morphology,thermal conductivity,mechanical property,and air filtration performances of PLA nanofiber membranes were investigated.Results indicated that the introduction of BNO nanosheets significantly enhanced the tensile mechanical property and thermal conductivity of PLA/BNO nanofiber membrane compared with pure PLA nanofiber membrane.When BNO nanosheet mass fraction was 0.7%in the spinning solution and wind speed was 0.01 m/s,filtration efficiency of the nanofiber membrane was 99.97%,quality factor was reached 0.262 Pa^(-1)at maximum and resistance pressure drop was 31 Pa in the minimum.Tensile breaking strength and thermal conductivity of PLA/BNO nanofiber membrane were enhanced by 27.39%and 26.62%,respectively.

关 键 词：聚乳酸 羟基化氮化硼 静电纺丝 过滤性能 导热性 力学性能 

分 类 号：TS171[轻工技术与工程—纺织材料与纺织品设计]