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磺化聚芳醚砜超薄纳孔膜的制备与表征

发表时间:2016-07-15  浏览量:5934  下载量:3136
全部作者: 张秋根,邓超,林震
作者单位: 厦门大学化学化工学院
摘 要: 提出了一种磺化酚酞侧基聚芳醚砜(SPES-C)超薄纳孔膜的制备方法。该方法以氢氧化铜纳米线为模板,利用SPES-C在纳米线表面的静电吸附过程,在微滤膜上制备厚度为79 nm的超薄纳孔层,其工艺简单、操作方便、适用于大多数阴离子聚电解质。着重考察了SPES-C超薄膜的制备过程、形貌、分离性能。制备的SPES-C超薄膜含有超薄纳孔分离层和大孔支撑层,表面平整,具有通量高、污染低、膜阻力小等优点,其纯水通量高达856 L•m−2•h−1•bar−1,5 nm金纳米粒子的截留率可达93.9%,在渗析、超滤等过程具有良好的应用前景。
关 键 词: 功能高分子;膜分离;纳米线模板法;超薄膜
Title: Preparation and characterization of ultrathin SPES-C nanoporous membranes
Author: ZHANG Qiugen, DENG Chao, LIN Zhen
Organization: College of Chemistry and Chemical Engineering, Xiamen University
Abstract: In this paper, we reported a method to fabricate ultrathin SPES-C nanoporous membranes for size-selective separation. Copper hydroxide nanostrands are employed as templates to prepare the about 79 nm-thick nanoporous layer on microfiltration filters by adsorption of SPES-C chains on nanostrands’ surface. The newly developed method is facile, universal, and can be applied to negatively charged polymers. The membrane fabrication, structure and separation performances are investigated in detail. The resulting membrane has an ultrathin SPES-C nanoporous layer covering on the macroporous support, and shows ultrafast water permeation, low fouling and tiny permeation resistance during pressure-driven filtration. The membrane has high pure water flux of up to 856 L•m−2•h−1•bar−1 and good rejection (93.9%) for 5 nm gold nanoparticles, which will have a wide application in controlled release, selective separation.
Key words: functional polymer; separation membrane; nanowire templates; ulrathin film
发表期数: 2016年7月第13期
引用格式: 张秋根,邓超,林震. 磺化聚芳醚砜超薄纳孔膜的制备与表征[J]. 中国科技论文在线精品论文,2016,9(13):1367-1371.
 
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