【作者】 魏娜； 孙诚； 黄利强；

【Author】 WEI Na~(1,2),SUN Cheng~(1,2),WANG Jing~1 and HUANG Liqiang~1 1 Tianjin University of Science & Technology,Tianjin,China;2 Tianjin Vocational Institute,Tianjin, China

【机构】 天津科技大学包装与印刷工程学院； 天津职业大学印刷工程系；

【摘要】 静电纺丝作为一种制备纳米纤维的先进技术,近年来受到普遍关注。静电纺丝是一种利用聚合物溶液或熔体在强电场作用下形成喷射流进行纺丝加工的工艺。与传统纺丝的方法不同,电纺丝是一种在高压电场的作用下制备超细纤维的方法,所得纤维直径可以达到亚微米级或纳米级,并可以直接成膜。由于丰富性、可再生性以及生物相容性和可降解性,纤维素是最有规模前景的资源。但由于纤维素溶剂一般具有强极性、高沸点,而且纤维素溶液在较低的浓度下就具有很高的粘度等问题,因此给静电纺丝制备纤维素膜在溶剂选择、纤维素膜的接收等方面带来一定的难度。本文以AMIMCL为溶剂,DMSO为助剂,天然纤维素为原料,利用静电纺丝法制备具有一定力学性能和透氧量的纤维素包装膜。通过扫描电镜、力学测试等,考察和分析了溶剂、接收装置及温湿度环境,对纤维平均直径以及纤维素包装膜力学性能等方面的影响,为后续静电纺丝法制备抗菌纤维素包装膜奠定良好的基础。更多还原

【Abstract】 Electrospinning is a technique that can be used to produce nanofibres from a polymeric solution or melt under the influence of a high electrostatic field[l].In this paper,we used Acetone/N,N-Dimethyl acetamide(DMAc) and Acetic acid as the solvent,to explore the influencing factors of using electrospinning to prepare the nano-fiber of cellulose acetate,and studied on how solvent,voltage and viscosity impact on the morphology and diameter of nano-fiber.The results of the study show that:Acetone/DMAc as solvent,when the solvent ratio is 3:1,the spinning of the concentration is 4-6%,the viscosity is 7.1-8.3Poise,the voltage is 15kV, and deposition distance is 12cm,we could obtain the gelatin nano-fibers with the diameter of 200-300 nanometer prepared by electrospinning.This study provided the theoretical basis for cellulose acetate prepared by electrospinning in functional packaging materials development.更多还原