氧化石墨烯/大豆蛋白复合膜的制备及透水性能  

Preparation and Permeability Performance of Graphene Oxide/Soybean Protein Composite Membrane

作　　者：张劲林[1] 刘惠娣 ZHANG Jinlin;LIU Huidi(Guangdong Polytechnic,Foshan 528041,China)

机构地区：[1]广东职业技术学院,广东佛山528041

出　　处：《广州化学》2025年第2期81-84,I0004,共5页Guangzhou Chemistry

基　　金：佛山市自筹经费类科技创新项目(2320001006258);广东职业技术学院校级科研项目(XJKY202331)。

摘　　要：采取改良型Hummers法合成氧化石墨烯,通过溶液共混的方法将得到的氧化石墨烯与大豆蛋白进行混合,经处理后得到氧化石墨烯/大豆蛋白复合膜。利用XRD和FTIR对所制备的复合膜进行表征,并通过紫外可见分光光度法和拟杯子法分析复合膜的透明度和透水率。结果表明:添加氧化石墨烯可提高大豆蛋白膜的阻湿性,其原因可归结于添加氧化石墨烯后,氧化石墨烯中丰富的含氧基团包裹在大豆蛋白的亲水基团表面,使得大豆蛋白的亲水基团与外界水分相隔开,从而增强膜的抗湿作用所致。在拟杯子法测试下,当氧化石墨烯添加量为0.4%时,复合膜的阻湿性达到最佳,其水蒸气透过率和水蒸气透过系数分别为5.46 g/(h·m^(2))和7.92g·mm/(m^(2)·kPa)。Graphene oxide was prepared by modified Hummers method.The got graphene oxide was mixed with soybean protein by solution blending method.After treatment,graphene oxide/soybean protein composite membrane was obtained.The gained composite membrane was measured through XRD and FTIR,and the transparency and water permeability of the composite membrane were analyzed by UV/Vis spectrophotometry and quasi cup method.The results showed that the addition of graphene oxide could improve the moisture resistance of soybean protein membrane.It could be attributed to the fact that after adding graphene oxide,the rich oxygen containing groups in graphene oxide were wrapped on the surface of the hydrophilic groups of soybean protein,which made the hydrophilic groups of soybean protein separate from the external water,thereby enhancing the moisture resistance of membrane.Under the test of quasi cup method,the composite membrane with 0.4%addition of graphene oxide had optimum moisture resistance.Its water vapor transmittance and water vapor transmittance coefficient are 5.46 g/(h·m^(2))and 7.92 g·mm/(m^(2)·kPa),respectively.

关 键 词：氧化石墨烯 大豆蛋白 复合膜 阻湿性 

分 类 号：O636.9[理学—高分子化学]