再生纤维素/有机蒙脱土复合膜的制备及性能研究  

Preparation and properties of regenerated cellulose/organic montmorillonite composite films

作　　者：何怡 唐亚丽 卢立新 潘嘹 丘晓琳 He Yi;Tang Yali;Lu Lixin;Pan Liao;Qiu Xiaolin(School of Mechanical Engineering,Jiangnan University,Wuxi 214122;Jiangsu Key Laboratory of Advance Food Manufacturing Equipment&Technology,Wuxi 214122)

机构地区：[1]江南大学机械工程学院,无锡214122 [2]江苏省食品先进制造装备技术重点实验室,无锡214122

出　　处：《化工新型材料》2023年第3期280-284,288,共6页New Chemical Materials

基　　金：国家自然科学基金(31671909)。

摘　　要：将有机蒙脱土(OMMT)混入纤维素溶液中,采用溶胶-凝胶法制得再生纤维素/有机蒙脱土(RC/OMMT)复合膜。利用扫描电镜、红外光谱和X射线衍射对RC/OMMT复合膜的形貌、结构进行表征,研究OMMT含量对RC/OMMT复合膜力学性能、疏水性、气体阻隔性和热稳定性的影响。结果表明,OMMT以剥离或插层的状态均匀分散在RC基体间,提高了复合膜的综合性能。当OMMT含量为3%时,RC/OMMT复合膜的拉伸强度、疏水性、气体阻隔性和热稳定性均得到显著提高;当OMMT含量达到4%时,复合膜的透氧系数低至1.391×10^(-17)cm^(3)·cm(/cm^(2)·s·Pa),具有优异的氧气阻隔性能。RC/OMMT复合膜在高性能绿色包装领域有较好的应用潜力。Regenerated cellulose/montmorillonite(RC/OMMT)composite films were prepared using sol-gel method by mixing organic montmorillonite(OMMT)into cellulose solution.The structure and morphology of RC/OMMT composite films were characterized by FT-IR,SEM and XRD.The effects of OMMT content on the mechanical properties,hydrophobicity,gas barrier,thermal stability of RC/OMMT composite films were investigated.The results showed that OMMT was evenly dispersed between RC substrates in the state of exfoliation or intercalation,which improved the comprehensive properties of composite films.When the OMMT content was 3%,the tensile strength,hydrophobic properties,gas barrier and thermal stability of RC/OMMT composite films were significantly improved.When the OMMT content reached 4%,the oxygen permeability coefficient of composite film was as low as 1.391×10^(-17)cm^(3)·cm·cm^(-2)·s^(-1)·Pa^(-1),which presented excellent oxygen barrier performance.RC/OMMT composite films has good application potential in the field of high-performance green packaging.

关 键 词：有机蒙脱土 再生纤维素 力学性能 气体阻隔性能 热稳定性 

分 类 号：TB383.2[一般工业技术—材料科学与工程]