抗菌和防紫外线双效功能聚乳酸/ZnO纤维的制备及其性能  

Preparation and properties of poly(lactic acid)/ZnO fiber with antibacterial and anti-ultraviolet functions

作　　者：朱燕龙 谷英姝 谷潇夏 董振峰[1,2] 汪滨 张秀芹[1,2] ZHU Yanlong;GU Yingshu;GU Xiaoxia;DONG Zhenfeng;WANG Bin;ZHANG Xiuqin(Beijing Key Laboratory of Clothing Materials R&D and Assessment,Beijing Institute of Fashion Technology,Beijing 100029,China;Beijing Engineering Research Center of Textile Nano Fiber,Beijing 100029,China)

机构地区：[1]北京服装学院服装材料研究开发与评价北京市重点实验室,北京100029 [2]北京市纺织纳米纤维工程技术研究中心,北京100029

出　　处：《纺织学报》2022年第8期40-47,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52173027,51929301,51673003);北京学者项目(RCQJ20303)。

摘　　要：为赋予聚乳酸(PLA)纤维高效的防紫外线性能和抗菌性能,以ZnO为功能粒子,采用熔融共混法制备了不同质量配比的PLA/ZnO共混物,对共混物的形貌结构、热性能、防紫外线性能和抗菌性能进行表征,选用最佳质量配比的共混物进行熔融纺丝制备PLA/ZnO纤维。结果表明:当ZnO母粒质量分数为5%时(ZnO质量分数为0.85%),ZnO粒子在PLA基体中分布均匀,PLA/ZnO共混物热稳定性较好,防紫外线和抗菌性能优异,紫外线防护系数达到663,且对大肠杆菌和金黄色葡萄球菌的抑菌率在99%以上;该比例的共混物具有良好的可纺性,制得的PLA/ZnO纤维的结晶度达30%以上,纤维的强度符合织造要求,制备的PLA/ZnO织物紫外线透过率低于30%,对大肠杆菌和金黄色葡萄球菌的抑菌率也高达99%,且织物水洗10次后抑菌率不变。In order to endow poly(lactic acid)(PLA)fiber with high anti-ultraviolet and antibacterial properties,PLA/ZnO blends with different mass ratios were prepared via melt blending method applying ZnO as functional particles.According to the morphology,thermal properties,anti-ultraviolet and antibacterial properties of the blends,the optimal mass ratio of the blend was chosen which was further fabricated into PLA/ZnO fiber through melt spinning.When the mass fraction of ZnO masterbatch was 5%with the mass fraction of ZnO being 0.85%,ZnO particles were uniformly distributed in the PLA matrix.The PLA/ZnO blend exhibited good thermal stability,excellent anti-ultraviolet and antibacterial properties.The ultraviolet protection coefficient reached 663,and the antibacterial rate against Escherichia coli and Staphylococcus aureus was more than 99%.Moreover,the PLA/ZnO blend fiber showed good spinnability with crystallinity reaching more than 30%and the fiber strength meeting the weaving requirements.The ultraviolet transmittance of the prepared PLA/ZnO fabric is less than 30%,and its antibacterial rate against Escherichia coli and Staphylococcus aureus is as high as 99%,which can also be maintained after 10 washes.

关 键 词：功能性纤维 聚乳酸纤维 氧化锌 共混改性 抗菌性能 防紫外线性能 熔融纺丝 

分 类 号：TQ316.67[化学工程—高聚物工业]