首页 | 本学科首页   官方微博 | 高级检索  
     检索      

改性聚偏氟乙烯接枝磺化聚(苯乙烯-co-丙烯酸)膜的研制
引用本文:郭贵宝,寇沙沙,安胜利.改性聚偏氟乙烯接枝磺化聚(苯乙烯-co-丙烯酸)膜的研制[J].高分子学报,2010,0(8):995-1002.
作者姓名:郭贵宝  寇沙沙  安胜利
作者单位:1. 北京科技大学冶金与生态工程学院,北京,100083;内蒙古科技大学化学与化工学院,包头,014010
2. 内蒙古科技大学材料与冶金工程学院,包头,014010
3. 北京科技大学冶金与生态工程学院,北京,100083;内蒙古科技大学材料与冶金工程学院,包头,014010
基金项目:内蒙古自治区攻关计划项目,内蒙古自治区自然科学基金 
摘    要:以过氧化苯甲酰(BPO)作引发剂,通过溶液接枝聚合法把苯乙烯/丙烯酸同时接枝到原硅酸钠改性的聚偏氟乙烯(PVDF)膜上,磺化后得到聚偏氟乙烯接枝磺化聚(苯乙烯-co-丙烯酸)膜(PVDF-g-P(SSA-co-AA)).研究了苯乙烯和丙烯酸的不同比例对膜的接枝反应及其相对湿度对膜电导率和含水量的影响.用傅立叶变换红外光谱(FTIR)检测原硅酸钠改性的PVDF膜经过接枝和磺化后所发生的结构变化,并用扫描电镜(SEM)观察PVDF膜接枝前后的形貌以及接枝磺化后产物PVDF-g-P(SSA-co-AA)膜的形貌及硫和硅分布.结果表明,原硅酸钠改性的PVDF膜与苯乙烯/丙烯酸同时发生接枝聚合反应,环境的相对湿度在20%~80%范围,对添加10wt%Na4SiO4的PVDF-g-P(SSA-co-AA)膜的电导率的影响基本不变,并达到0.0198S·cm-1.原硅酸钠改性的PVDF膜结构在接枝前后和磺化前后发生变化,确认磺化反应不只是在膜表面,同时渗入膜中进行.

关 键 词:聚偏氟乙烯  苯乙烯  溶液接枝  磺酸膜
收稿时间:2009-08-28

PREPARATION AND PERFORMANCE OF MODIFIED POLYVINYLIDENE FLUORIDE MEMBRANES GRAFTED WITH SULFONATED POLY(STYRENE-co-ACRYLIC ACID)
GUO Guibao,KOU Shasha,AN Shengli.PREPARATION AND PERFORMANCE OF MODIFIED POLYVINYLIDENE FLUORIDE MEMBRANES GRAFTED WITH SULFONATED POLY(STYRENE-co-ACRYLIC ACID)[J].Acta Polymerica Sinica,2010,0(8):995-1002.
Authors:GUO Guibao  KOU Shasha  AN Shengli
Institution:School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083; School of Chemistry Engineering; School of Materials and Metallurgy, Inner Mongolia University of Science &; Technology, Baotou 014010
Abstract:Polyvinylidene fluoride membranes grafted with sulfonated poly(styrene-co-acrylic acid)(PVDF-gP(SSA-co-AA))were prepared by a solution-grafting technique.In the technique,benzoylperoxide (BPO) was used as an evocating agent,and polystyrene and acrylic acid were grafted onto PVDF membranes modified with plain sodium silicate (Na4SiO4 ),then,the product was sulfonated to obtain PVDF-g-P(SSA-co-AA) membranes.The effects for the different ratio of styrene and acrylic acid on the grafting degree,and their humidity on the conductivity of membrane and the moisture content,were investigated.Fourier transform infrared spectroscopy (FTIR) was used to characterize the change of the membrane’s microstructures before and after the grafting and the sulphonation.The morphologies of the PVDF and the PVDF-g-P(SSA-co-AA) membranes and the distribution of silicon were studied by scanning electrolytic microscope (SEM).The results indicated that the conductivity of PVDF-g-P(SSA-co-AA)membrane doped with 10 wt% Na4SiO4 was 0.0198 S·cm-1 at a relative humidity range of 20% ~ 80% ,and the microstructures of PVDF membrane modified with plain sodium silicate (Na4SiO4)after the grafting and the sulphonation changed obviously,which indicated that the sulphonation had permeated into the membrane besides the membrane surface.
Keywords:Polyvinylidene fluoride  Styrene  Solution-grafting  Sulfonic acid membrane
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《高分子学报》浏览原始摘要信息
点击此处可从《高分子学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号