亲水表面纳米多孔聚丙烯腈膜的制备与表征

IF 1.2 Q4 NANOSCIENCE & NANOTECHNOLOGY international journal of nano dimension Pub Date : 2015-07-01 DOI:10.7508/IJND.2015.03.001
Seyedeh Zeinab Asadi, S. Ehsan, A. Tarighaleslami
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引用次数: 2

摘要

在铸膜液中加入聚氧乙烯(40)壬基苯基醚(IGEPAL)制备了具有纳米孔表面和高亲水性的聚丙烯腈(PAN)膜。以PAN/IGEPAL/1-甲基-2吡咯烷酮(NMP)为原料,采用浸渍沉淀法进行相转化制备膜。以纯水为混凝介质。研究了添加IGEPAL和PAN浓度对制备膜形态、润湿性和透气性的影响。采用扫描电镜(SEM)和原子力显微镜(AFM)对其形貌进行了研究。通过接触角测量和渗透实验,考察了膜的润湿性和渗透性。接触角测量结果表明,表面活性剂IGEPAL的加入和浇铸液中PAN浓度的降低,增强了膜的亲水性。SEM和AFM分析发现,IGEPAL的加入和聚合物浓度的变化对膜顶表面和子层的结构有显著的影响。此外,还发现降低PAN浓度和加入IGEPAL可以形成高通透性的膜。
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PREPARATION AND CHARACTERIZATION OF NANO-POROUS POLYACRYLONITRILE (PAN) MEMBRANES WITH HYDROPHILIC SURFACE
Polyacrylonitrile (PAN) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (IGEPAL) as an additive in the casting solution. The membranes were prepared from PAN/IGEPAL/1-Methyl-2pyrrolidone (NMP) via phase inversion induced by immersion precipitation technique. Pure water was used as coagulation medium. The effects of adding IGEPAL and the PAN concentration on the morphology, wettability, and permeability of the prepared membranes were studied. The morphological studies were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). In addition, the wettability and permeability of membranes were examined by contact angel measurements and permeation experiments. The contact angle measurements indicate that the hydrophilicities of membrane enhanced by the addition of IGEPAL surfactant and decreasing the PAN concentration in the casting solution. According to SEM and AFM analysis, it was found that the addition of IGEPAL and change concentration of polymer have a significant influence on structure of the membrane top surface and the sub-layer. In addition, it was found that decreasing the PAN concentration and addition of IGEPAL resulted in the formation of membranes with high permeability.
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来源期刊
international journal of nano dimension
international journal of nano dimension NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
2.80
自引率
20.00%
发文量
0
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