基于综合热-湿性能的静电纺丝相变储湿纤维制备工艺的响应面法优化

RESPONSE SURFACE METHOD OPTIMIZATION OF PREPARATION TECHNIQUE FOR ELECTROSPUN PHASE CHANGE HUMIDITY STORAGE FIBERS BASED ON COMPREHENSIVE THERMAL-HUMIDITY

以醋酸纤维素为包裹材料、聚乙二醇800为相变材料、N,N-二甲基乙酰胺和丙酮为溶剂,采用静电纺丝法制备相变储湿纤维。利用响应面法研究反应温度、推速以及电压对静电纺丝相变储湿纤维综合热-湿性能的影响,得出预测模型,对静电纺丝相变储湿纤维制备工艺进行优化,并运用傅里叶变换红外光谱仪(FT-IR)和扫描电子显微镜(SEM)对优化制备静电纺丝相变储湿纤维进行表征。结果表明,推速与电压对静电纺丝相变储湿纤维综合热-湿性能影响显著。静电纺丝相变储湿纤维的优化工艺:反应温度为38.30℃、推速为0.42 mL/h和电压为21.60 kV。优化制备静电纺丝相变储湿纤维中醋酸纤维素较好地将聚乙二醇800进行包裹。

Phase change humidity storage fibers was prepared by electrospinning method with cellulose acetate as coating materials,polyethylene glycol 800 as phase change materials,N,N-dimethylacetamide and acetone as solvent.The effects of reaction temperature,driving speed and voltage on comprehensive thermal-humidity performance of electrospun phase change humidity storage fibers were studied by response surface method,by which the quadratic polynomial prediction model with the three factors was developed.The preparation technique for electrospun phase change humidity storage fibers was optimized,in which FT-IR and SEM were applied to characterize the optimization preparation.The results show that driving speed and voltage have significantly effects on comprehensive thermal-humidity performance of electrospun phase change humidity storage fibers.The optimization technique parameters of the electrospun phase change humidity storage fibers are reaction temperature of 38.30℃,driving speed of 0.42 mL/h and voltage of 21.60 kV.The polyethylene glycol 800 is packaged well by cellulose acetate in optimized electrospun phase change humidity storage fibers.