高强、高透明、高疏水细菌纤维素复合膜  

Bacterial Cellulose Composite Film with High Strength,High Transparency,and High Hydrophobicity

作　　者：黄小芳 赵轩 何英姿 钟春燕 钟林新[1] HUANG Xiaofang;ZHAO Xuan;HE Yingzi;ZHONG Chunyan;ZHONG Linxing(State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,510641,China;Hainan Yeguo Foods CoLtd,Haikou 570311,China)

机构地区：[1]华南理工大学制浆造纸国家重点实验室,广东广州510640 [2]海南椰国食品有限公司,海南海口570311

出　　处：《造纸科学与技术》2023年第3期1-8,67,共9页Paper Science & Technology

基　　金：海口市科技计划重点科技计划项目(2021-030)。

摘　　要：细菌纤维素(BC)是一种由微生物产生的纯纤维素纳米纤维,具有各种优异的性能,但由于亲水性强,限制了其在高湿度、接触水环境中的应用。以细菌纤维素为基体,聚乙烯醇(PVA)为光学匹配填充材料,通过浸渍法制备了高强度、高透明复合膜;随后采用聚甲基丙烯酸甲酯(PMMA)和含氟硅烷(PFDTES)对复合膜进行疏水改性制备了高疏水、高透明的复合膜。结果表明,当PVA质量分数为0.3%时,经疏水处理后的复合薄膜的性能最优,拉伸强度可达244.9 MPa,在800 nm处光透射率可达90.3%,接触角为114.3°,为BC的应用提供新的途径。Bacterial cellulose(BC)is a pure cellulose nanofiber with various excellent performance produced by microorganisms,but its application in highhumidity or watercontact environment is limited due to its strong hydrophilicity.Herein,a strong and highly transparent composite film was prepared through impregnation method by using BC as matrix and polyvinyl alcohol(PVA)as the optical matching filling material.Subsequently,the transparent film was modified using polymethyl methacrylate(PMMA)and fluorosilane(PFDTES).The results show that when PVA mass fraction is 0.3%,the composite film after hydrophobic treatment shows the optimal performance,with a tensile strength of 244.9 MPa,a light transmittance of 90.3%at 800 nm,and a contact angle of 114.3°.This work provides a new pathway for the application of BC.

关 键 词：细菌纤维素 疏水改性 透明 防水 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]