原位培养高强细菌纤维素/阿拉伯胶复合薄膜  

High strength bacterial cellulose/acacia composite film cultured in situ

作　　者：赵海雯 吴擢彤 谢锐敏 陈仕艳[1] Zhao Haiwen;Wu Zhuotong;Xie Ruimin;Chen Shiyan(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620

出　　处：《合成技术及应用》2023年第1期44-50,共7页Synthetic Technology & Application

基　　金：国家自然科学基金(51573024)。

摘　　要：高强薄膜已被广泛应用于电子器件中,为了缓解日益严重的环境压力,开发绿色可降解的薄膜材料至关重要。本文通过在细菌纤维素(BC)培养液中原位添加阿拉伯胶(ArG),经过木醋杆菌发酵制备BC/ArG复合膜,采用扫描电子显微镜(SEM)、红外光谱仪(FTIR)、热重分析仪(TGA)等对结构及性能进行了表征。结果表明,与BC薄膜(断裂强度228 MPa,断裂伸长率2.82%)相比,BC/ArG复合薄膜的抗拉强度和断裂伸长率均有显著提高(断裂强度602 MPa,断裂伸长率7.30%)。该复合膜在200℃、12 h的条件下仍然具有很好的热稳定性。这种具有优异力学性能及热稳定性的全生物基复合膜有望在可穿戴电子器件基底材料、能源转换及过滤膜材料等领域发挥应用。High-strength films have been widely used in electronic devices.In order to alleviate the increasingly serious environmental pressure,it is crucial to develop green degradable film materials.In this paper,bacterial cellulose/Arabic gum(BC/ArG)composite films were prepared by adding ArG in the culture medium of BC and fermented by Acetobacter xylum in situ.The effect of ArG content on the yield of BC films was studied and the reason for the increase of yield was clarified.Scanning electron microscope(SEM),infrared spectrometer(FTIT)and thermogravimetric analyzer(TGA)were used to characterize the structure and properties.The results show that the tensile strength and elongation of BC/ArG composite films are significantly increased(fracture strength 602 MPa,elongation 7.30%)compared with BC film(fracture strength 228 MPa,elongation 2.82%).The composite films still have good thermal stability at 200℃for 12 h.This kind of bio-based composite film with excellent mechanical properties and thermal stability is expected to play a potential role in the substrate materials of wearable electronic devices,energy conversion,filter materials and other fields.

关 键 词：细菌纤维素 阿拉伯胶 增强薄膜 原位培养 

分 类 号：TQ352[化学工程]