聚芳硫醚砜分离膜的制备——制膜条件对分离性能的影响  

Preparation of PASS Membrane—Permeability and Separation Property

作　　者：王孝军[1,2] 于清泉[2] 黄恒梅[2] 杨杰[1,2] 李光宪[2] 

机构地区：[1]四川大学分析测试中心材料研究所,四川成都610064 [2]四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2010年第10期140-143,共4页Polymer Materials Science & Engineering

基　　金：863资助项目(2007AA03Z561)

摘　　要：在先前对聚芳硫醚砜分离膜制备及结构研究的基础上,考察了不同制膜条件对聚芳硫醚砜分离膜透过性及分离性能的影响。结果表明,在铸膜液中加入添加剂聚乙二醇(PEG)可有效提高薄膜的透过性,所添加PEG分子量为2000时薄膜的透过性最佳。PEG的添加量在5%以下为宜,PEG的大量加入并不能继续改善薄膜的透过性。薄膜浸入沉淀浴前的蒸发时间也会对薄膜透过性产生影响,蒸发时间应控制在60s左右为宜。另外,采用高沉淀能力的沉淀浴制得的分离膜具有高的分离性能及低的透过性。Polyarylene sulfide sulfone （PASS） belongs to a new generation of heat-resistant thermoplastics and has already been used as an excellent membrane material. Base on the previous research results,the effects of processing parameters on permeabilities and separation properties of PASS membranes were studied in this paper. According to the experimental results,evaporating time should be about 60s and amount of polyethylene glycol （PEG） should be less than 5% to obtain a PASS membrane with good permeability. Furthermore,precipitating bath with higher precipitating ability will lead to a higher separation property and lower permeability of PASS membrane.

关 键 词：聚芳硫醚砜 分离膜 透过性 分离性能 

分 类 号：TB383[一般工业技术—材料科学与工程]