纤维素科学与技术2024，Vol.32Issue(1)：1-8,8.DOI:10.16561/j.cnki.xws.2024.01.10
高强韧透明细菌纤维素薄膜
High Strength and Toughness Transparent Bacterial Cellulose Film
摘要
Abstract
Bacterial cellulose(BC)is a biodegradable natural biological macromolecule,which has high mechanical strength due to its nano-network structure and high crystallinity,but its poor toughness and translucency limit its application.Here,by adding choline chloride/urea(ChCl/urea)as plasticizer,we prepared BC/ChCl/urea composite film by a simple impregnation method.It is indicated that ChCl/urea can effectively improve the elongation of BC by breaking the intermolecular hydrogen bond of cellulose and forming a new hydrogen bond between plasticizer and cellulose,which increases from 2.82%to 28.85%,while maintaining a high strength of 186 MPa.The fracture energy also increases from 2.68 MJ/m3 to 43.52 MJ/m3.BC/ChCl/urea composite film has good flexibility and folding resistance,and its transparency is up to 92.4%.The transparency and softness of the film remained unchanged after 30 days of storage.When used as the basic material of near-field communication(NFC),the BC/ChCl/urea composite film shows effective information transmission even under bending and stretching,indicating the potential to be used as substrate materials for wearable and electronic devices.关键词
细菌纤维素/增塑/强韧/透明/薄膜Key words
bacterial cellulose/plasticizer/high strength and toughness/transparent/film分类
通用工业技术引用本文复制引用
周舟,赵海雯,韩志良,李晶,陈仕艳..高强韧透明细菌纤维素薄膜[J].纤维素科学与技术,2024,32(1):1-8,8.基金项目
国家自然科学基金面上项目(52273103). （52273103）
