聚合物分离膜表面仿生共沉积改性及其性能研究

安坦; 于辉; 徐丽君; 徐志康; 万灵书

doi:10.11777/j.issn1000-3304.2019.19086

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聚合物分离膜表面仿生共沉积改性及其性能研究

研究论文 | 更新时间：2021-01-26

- 聚合物分离膜表面仿生共沉积改性及其性能研究
  增强出版
- Modification of Microporous Polymer Membranes via Surface Co-deposition and the Separation Performances
- 高分子学报 2019年50卷第12期页码：1298-1304
- 作者机构：
  
  教育部高分子合成与功能构造重点实验室浙江大学高分子科学与工程学系　杭州 310027
- 作者简介：
  
  E-mail: lswan@zju.edu.cn
- 基金信息：
  
  国家自然科学基金面上项目(基金号 51873192)与优秀青年科学基金(基金号 51522305)和中央高校基本科研业务费专项资金(基金号 2015XZZX004-26)资助()
- DOI：10.11777/j.issn1000-3304.2019.19086
  中图分类号：
- 纸质出版日期：2019-12，
  
  网络出版日期：2019-7-12，
  
  收稿日期：2019-4-25，
  
  修回日期：2019-6-10，
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安坦, 于辉, 徐丽君, 徐志康, 万灵书. 聚合物分离膜表面仿生共沉积改性及其性能研究[J]. 高分子学报, 2019,50(12):1298-1304.

Tan An, Hui Yu, Li-jun Xu, Zhi-kang Xu, Ling-shu Wan. Modification of Microporous Polymer Membranes via Surface Co-deposition and the Separation Performances[J]. Acta Polymerica Sinica, 2019,50(12):1298-1304.
安坦, 于辉, 徐丽君, 徐志康, 万灵书. 聚合物分离膜表面仿生共沉积改性及其性能研究[J]. 高分子学报, 2019,50(12):1298-1304. DOI： 10.11777/j.issn1000-3304.2019.19086.

Tan An, Hui Yu, Li-jun Xu, Zhi-kang Xu, Ling-shu Wan. Modification of Microporous Polymer Membranes via Surface Co-deposition and the Separation Performances[J]. Acta Polymerica Sinica, 2019,50(12):1298-1304. DOI： 10.11777/j.issn1000-3304.2019.19086.

摘要

发展了一种基于单酚化合物阿魏酸和铜离子的新型表面沉积体系，通过液相共沉积方法在不同基底表面构建了共沉积涂层. 考察了组分比例和沉积时间等因素对沉积行为的影响. 在最佳沉积条件下制备了涂层改性聚丙烯微孔膜，通过扫描电子显微镜、衰减全反射傅里叶变换红外光谱仪、X射线光电子能谱仪、固体表面zeta电位分析仪和水接触角测试仪等对膜表面进行了表征，并将其应用于油水分离和染料吸附. 结果表明，改性膜表面具有良好的亲水性以及强烈的荷负电性，对水包油乳液具有优异的分离性能以及良好的渗透通量；同时，改性膜对荷正电染料具备优良的吸附能力. 研究结果有望丰富单酚类化合物的沉积行为研究，发展新型表面沉积体系.

Abstract

Surface deposition systems such as dopamine and tannic acid have received great attention in recent years and have been widely applied in surface modification of polymer separation membranes. It is generally accepted that only polyphenols containing catechol structure can effectively form surface coatings. This paper reports a novel surface co-deposition systems based on ferulic acid and Cu

. It should be noted that ferulic acid

a monophenol

contains only one phenolic hydroxyl group

without acatechol structure. Co-deposition coatings were prepared on various substrates

and the effects of composition and deposition time were investigated. Results indicate that the ferulic acid/Cu

system is able to form coating layer on most substrates. However

the coatings cannot be effectively formed on highly hydrophilic susbtrates such as silica

glass

and quartz. Microporous polypropylene membrane with surface coatings was prepared under optimal deposition conditions

and the surface structure and properties were characterized by field emission scanning electron microscopy (FE-SEM)

attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR)

X-ray photoelectron spectroscopy (XPS)

zeta potential analyzer

and water contact angle measurement. The modified membranes were applied to the separation of oil-in-water emulsions and dye adsorption. The results show that the modified membrane becomes hydrophilic and strongly negatively charged

while the surface porous structure changes little. The modified membranes can be used for the separation of various oil-in-water emulsions with high separation efficiency. It is also demonstrated that the membranes can be used repeatedly in the separation of emulsions. Furthermore

the coatings endow the membranes with strongly negatively charged surfaces

and hence the modified membranes show great potential in the adsorption of positively charged dyes. The results may introduce a novel monophenol-based system for surface deposition and greatly expand the types of surface deposition phenols.

关键词

表面沉积阿魏酸聚丙烯微孔膜油水分离染料吸附

Keywords

Surface depositionFerulic acidMicroporous polypropylene membraneOil/water separationDye adsorption

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