Surface modification of polypropylene microporous membrane via self-assembly and UV-crosslinking of lecithin and analysis of surface properties

WANG Liang; YU Haiyin; HE Guijin; HUANG Xiaojun

doi:10.3969/j.issn.0438-1157.2013.02.034

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Surface modification of polypropylene microporous membrane via self-assembly and UV-crosslinking of lecithin and analysis of surface properties

更新时间：2025-12-10

- Surface modification of polypropylene microporous membrane via self-assembly and UV-crosslinking of lecithin and analysis of surface properties
- CIESC Journal Issue 2, Pages: 663-670(2013)
- 作者机构：
  
  1. 安徽师范大学化学与材料科学学院,安徽,芜湖,241000
  2. 浙江大学高分子科学与工程学系, 化学工程联合国家重点实验室,高分子合成与功能构造教育部重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.02.034
  CLC： 63TQ028.8
- Online First：05 February 2013，
  
  Published：05 February 2013
- 稿件说明：
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WANG Liang, YU Haiyin, HE Guijin, et al. Surface modification of polypropylene microporous membrane via self-assembly and UV-crosslinking of lecithin and analysis of surface properties[J]. CIESC Journal, 2013, (2): 663-670.
DOI：

WANG Liang, YU Haiyin, HE Guijin, et al. Surface modification of polypropylene microporous membrane via self-assembly and UV-crosslinking of lecithin and analysis of surface properties[J]. CIESC Journal, 2013, (2): 663-670. DOI： 10.3969/j.issn.0438-1157.2013.02.034.

摘要

发展了一种基于分子自组装/交联的聚丙烯微孔膜(PPMM)表面改性方法

以含不饱和长烷基链的两亲性天然卵磷脂为改性剂

首先通过分子自组装在PPMM表面形成类磷脂组装层

再采用紫外线原位聚合交联方法在PPMM表面构建稳定的类磷脂仿生修饰层

进而赋予PPMM表面优异的亲水性和生物相容性。分别采用FTIR/ATR和XPS分析确证了改性前后膜表面基团及化学成分的变化。通过水接触角测定、荧光标记蛋白质吸附和酶联免疫吸附(ELISA)实验

考察了类磷脂仿生修饰前后膜表面亲水性和抗蛋白质吸附性能

发现类磷脂仿生修饰后PPMM表面水接触角由130°下降至30°

抗蛋白质吸附性能也得到明显改善;自组装/交联改性PPMM经多次水洗后仍能保持良好的亲水性和抗蛋白质吸附性能

表明膜表面所形成的类磷脂仿生修饰层具有良好的稳定性。

Abstract

A novel approach to modification of polypropylene microporous membrane (PPMM) surface based on molecular self-assembly and UV-crosslinking was devised.First

natural amphiphilic lecithin was introduced onto the PPMM surface via self-assembly.Then

a stable biomimetic surface analogy with phospholipid layer was constructed through UV-crosslinking of lecithin

conferring the PPMM surface with good hydrophilicity and biocompatibility.The anchoring of lecithin was confirmed by Fourier transformed infrared spectroscopy/attenuated total reflection(FTIR/ATR)and X-ray photoelectron spectroscopy (XPS) studies.Water contact angle

fluorescence labeled protein(FITC-protein)adsorption

and enzyme-linked immuno-sorbent assay (ELISA) were used to evaluate hydrophilicity and biocompatibility of the membrane.Water contact angle of the PPMMs surface was significantly improved after modification

by a decrease from 130? to 30?.Moreover

the modified membranes showed lower protein adsorption.Furthermore

the self-assembly and UV-crosslinking modified membrane exhibited good stability even after multiple washing compared with the self-assembly modified one.

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