文献类型：期刊文献

中文题名：细菌纤维素/聚乙烯醇复合材料的制备及性能

英文题名：Preparation and Characterization of Bacterial Cellulose/Poly(vinyl Alcohol) Composites

作者：杨眉[1];陈袁曦[1];于冬云[1];周晓东[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2017

卷号：45

期号：8

起止页码：20

中文期刊名：工程塑料应用

外文期刊名：Engineering Plastics Application

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

基金：中央高校基本科研业务费专项基金项目

语种：中文

中文关键词：细菌纤维素;聚乙烯醇;复合材料;微观结构;光学性能

外文关键词：bacterial cellulose ; poly (vinyl alcohol) ; composite ; microstructure ; optical property

摘要：采用浸渍法向细菌纤维素(BC)中引入聚乙烯醇(PVA),对BC/PVA复合材料的结构、光学性能及力学性能进行研究。当浸渍液中PVA浓度为20 g/L时,力学性能及光学性能测试表明,复合材料在保持BC超高力学强度的同时光学性能较纯BC显著提高,透光率最高可达90.74%,可见光区最多提高24.26%。扫描电子显微镜及X射线衍射表明,大量自由PVA渗入BC网络结构,复合材料层状结构淡化,结晶度下降。
Bacterial cellulose(BC)was immersed into poly(vinyl alcohol)(PVA)solution to produce BC/PVA composites.The structure,optical properties and mechanical properties of composites were studied.When the PVA concentration of PVA solution is20g/L,the clarity of composite is obviously enhanced.The maximum value of clarity is90.74%and the maximum rate of increase in visible light region is24.26%.Meanwhile,the tensile strength as well as tear strength of BC/PVA composite are almost the same as pure bacterial cellulose.SEM and XRD reveal that lots of free PVA penetrates into bacterial cellulose network.The structure of composites turn into cellular from laminar.The degree of crystallinity decreases.