微纳纤维素晶体/聚乙烯醇渗透汽化膜材料的研究  

Study on micro-nano cellulose crystals modified polyvinyl alcohol pervaporation membrane materials

作　　者：俞月[1] 田维乾[1] 白露[1] 张力平[1] 崔晓霞[1] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083

出　　处：《化工新型材料》2010年第S1期53-56,共4页New Chemical Materials

基　　金：国家大学生创新试验计划(GCS08010);国家自然科学基金项目(30871967);国家林业局"948"引进项目(2008-4-075)

摘　　要：利用微纳纤维素晶体改性戊二醛交联的聚乙烯醇渗透汽化膜,考察了微纳纤维素晶体的添加对交联膜的影响,并对膜材料进行FT-IR和AFM检测。结果表明,添加0.5%的微纳纤维素晶体改性膜材料的渗透通量从423.14g.m2.h-1提高到751.61g.m2.h-1,分离因子基本不变;对膜材料进行FT-IR和AFM检测表明,微纳纤维素晶体与聚乙烯醇之间产生新的氢键缔合,改性膜材料表面规整、致密无孔。Crosslinking of polyvinyl alcohol pervaporation membrane with glutaraldehyde was modified by cellulose crystals to improve its performances. The effects of cellulose crystals on polyvinyl alcohol pervaporation membrane were measured. It was also charactered by FT-IR and AFM. The results showed that,when the cellulose crystals content was 0.5%,permeate flux increased from 423.14g·m2·h-1 to 751.61g·m2·h-1 and separation factor remained basically unchanged. The hydrogen bonds were found between hydroxies of PVA and hydroxies of cellulose crystals in the FT-IR. The surface of modified pervaporation membrane was dense and uniform by the AFM.

关 键 词：渗透汽化 微纳纤维素晶体 聚乙烯醇 

分 类 号：TQ028.8[化学工程]