摘要
采用溶液共混法制备聚乙烯醇(PVA)-壳聚糖(CS)/有机化累托石(OREC)系列复合膜,以X-射线衍射、扫描电镜、透射电镜表征了复合膜的形貌结构,研究了复合膜的热性能、溶胀性能及对牛血清蛋白的吸附-缓释性能。实验结果表明,在OREC质量分数为2%,PVA质量分数为10%时,复合膜具有良好的插层结构,且热稳定性最好,吸水率及对牛血清蛋白吸附率最大,缓释性能最好。与纯CS膜相比,此复合膜40%失重率时对应的热分解温度提高133℃,溶胀率提高16.1 g/g,对牛血清蛋白的吸附率提高16.5 mg/g。
A series of polyvinyl alcohol（ PVA）-chitosan（ CS）/organic rectorite（ OREC） nanofilms are prepared by water solution processing method. The structure and morphology of composite films are analyzed by XRD,SEM and TEM. The thermal property,swelling behavior and adsorption-release of bovine serum albumin of the nanofilms are also studied. The results show that the introduction of 2% OREC and 10% PVA has the most significant positive effect on the intercalation,thermal property,swelling behavior and adsorption-release properties of the composite films. The thermogravimetric temperature of 40% mass loss of the composite sample is 133 ℃,which is higher than that of pure CS.The water adsorption and the adsorption of bovine serum albumin are 16. 1 g/g and 16. 5 mg/g,respectively,which are also higher than those of pure CS.
出处
《现代化工》
CAS
CSCD
北大核心
2016年第8期88-91,共4页
Modern Chemical Industry
基金
陕西省自然科学基金资助项目(2014JM2049)
陕西省教育厅科学基金资助项目(12JK0610)
