智能相变调温聚乳酸纤维膜的制备及其性能  

Preparation and properties of intelligent phase change thermoregulated polylactic acid fiber membrane

作　　者：刘霞 吴改红 闫子豪 王彩柳 LIU Xia;WU Gaihong;YAN Zihao;WANG Cailiu(College of Textile Engineering,Taiyuan University of Technology,Jinzhong,Shanxi 030600,China)

机构地区：[1]太原理工大学轻纺工程学院,山西晋中030600

出　　处：《纺织学报》2024年第12期18-24,共7页Journal of Textile Research

基　　金：山西省科技成果转化引导专项项目(202104021301053);山西省基础研究计划项目(20210302123114,202203021211146);山西省艺术科学规划课题(22BG082);山西省高等学校大学生创新创业训练计划项目(20220125)。

摘　　要：为开发具有调温功能的可生物降解纤维膜,以聚乳酸(PLA)作为支撑载体,十二水磷酸氢二钠(DHPD)作为相变调温材料,利用单轴静电纺丝法制备了具有热调节功能的调温纤维膜。借助扫描电子显微镜、差示扫描量热仪、热红外成像仪、水接触角测量仪对PLA与DHPD质量比不同制备的调温纤维膜的形貌结构、热储能性能、热调节性能、可重复循环性能以及吸水性能进行了表征与分析。结果表明:当PLA与DHPD质量比为40∶4时,调温纤维膜表面光滑,纤维平均直径为342 nm;在42.45℃时,调温纤维膜的熔融焓值为1.96 J/g,具有吸热的能力;在对调温纤维膜加热的80 s内,最终温度上升了3.7℃;除此之外,调温纤维膜具有良好的热循环使用性能且水接触角可达到110°。该调温纤维膜在绿色环保的智能纺织品中具有潜在的应用价值。Objective In developing textiles,wearable devices,aerospace and other fields,the core element of intelligent temperature regulation function is based on the use of phase change temperature regulating fibers.As the basic unit of intelligent temperature regulating textiles,phase change fibers mainly combine phase change materials with matrix materials through various spinning technologies.With the increasingly serious energy crisis and environmental protection problems,the development of thermal energy storage materials with environmental protection characteristics is very important for the sustainable development of energy.At present,there are limited studies on phase change fibers(membranes)based on biodegradable materials and phase change materials.Therefore,it is of great significance to develop biodegradable phase change fiber materials(membranes)with high latent heat.Method Polyactic Acid(PLA)nanofiber membrane has good biodegradability,and as a phase change material,disodium hydrogen phosphate dodecahydrate(DHPD)is widely used in the field of thermal energy storage.Through adding phase change materials to PLA nanofibers,the fiber membrane can achieve temperature regulation function.In this study,DHPD was used as a phase change functional material,and PLA was used as a carrier for encapsulating phase change materials.The biodegradable fiber membrane with temperature regulating function was prepared by electrospinning technology.The morphology structure,thermal energy storage performance and thermal regulation performance of the temperature-regulated fiber membrane were analyzed.In addition,the thermal cycle performance,wettability and water absorption performance of the temperature-regulated fiber membrane were evaluated.Results When the mass fraction of PLA was 8%and the mass ratio of PLA to DHPD was 40∶4,the nanofiber membrane with an average fiber diameter of 342 nm was successfully prepared.The results showed that the fiber surface of the thermoregulated fiber membrane was smooth and continuous,and the

关 键 词：聚乳酸 调温纳米纤维膜 智能纺织品 相变纤维 静电纺丝 十二水磷酸氢二钠 

分 类 号：TB34[一般工业技术—材料科学与工程]