熔融共混制备聚己内酯基水蒸气阻隔材料及其阻隔性能  

Water Vapor Barrier Property of Polycaprolactone Based Blends Prepared Through Melt Blending

作　　者：韩艾纯 周虹汛 宋杭岭 吴宏[1] 郭少云[1] 陈蓉[1] Aichun Han;Hongxun Zhou;Hangling Song;Hong Wu;Shaoyun Guo;Rong Chen(State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China)

机构地区：[1]高分子材料工程国家重点实验室(四川大学)四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2018年第5期126-130,共5页Polymer Materials Science & Engineering

基　　金：高等学校学科创新引智计划资助(B13040);教育部"长江学者和创新团队发展计划资助"项目(IRT-15R48)

摘　　要：通过熔融共混制备了具备高水蒸气阻隔性能的可生物降解聚己内酯/三硬脂酸甘油酯(PCL/C18)复合材料。在相对湿度为90%RH时,添加30%的C18使复合材料的水蒸气渗透率由1.80^(-13)g·cm/(cm^2·s·Pa)(纯PCL)降低至0.58^(-13)g·cm/(cm^2·s·Pa),降低幅度达67.8%。结构分析表明,C18呈球状均匀分布在PCL基体中,并能大幅增加共混物的亲水接触角,既能有效构筑复合材料疏水性表面,又可增加水蒸气在材料中的扩散路径,获得阻隔性能优良的PCL/C18体型阻隔材料。该方法通过简单的一次熔融加工制备了具有高水蒸气阻隔性能且力学性能良好的材料,具有潜在应用价值。Biodegradable poly（ ε-caprolactone）/glycerol tristearate（ PCL/C18） composites with excellent water vapor barrier property were obtained through melt blending. After the addition of 30% C18,the water vapor permeability（ WVP）（ 90% relative humidity） of PCL/C18 blends decreases from 1. 80-13 g ·cm/（ cm2·s·Pa）（ pure PCL） to 0. 58-13 g·cm/（ cm2·s·Pa） C18 is distributed uniformly in the PCL matrix,the addition of which enhances the hydrophobicity of the PCL/C18 blends. As a result,C18 provides effective hydrophobic surface and prolonged diffusion pathways that can improve the water vapor barrier property of the blends. This method can prepare materials with high water vapor barrier and favorable mechanical properties through one simple melt processing,thus it is profound for barrier applications.

关 键 词：水蒸气阻隔 聚己内酯 三硬脂酸甘油酯 疏水性 熔融共混 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]