Surface characterization by FTIR-ATR spectroscopy of polyethersulfone membranes-unmodified, modified and protein fouled

被引：316

作者：

Belfer, S ^{[1
]}

Fainchtain, R ^{[1
]}

Purinson, Y ^{[1
]}

Kedem, O ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Inst Appl Res, IL-84105 Beer Sheva, Israel

来源：

JOURNAL OF MEMBRANE SCIENCE | 2000年 / 172卷 / 1-2期

关键词：

surface modification of UF membranes; grafting of methacrylates; redox initiation of grafting; albumin adsorption; FTIR-ATR spectroscopy;

D O I：

10.1016/S0376-7388(00)00316-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Polyethersulfone (PES) ultrafiltration membranes were modified by radical grafting with the aid of redox initiators to create new functional groups on the surface. Methacrylate-based monomers were used. The modified membrane surfaces were characterized by FTIR-ATR spectroscopy to detect chemical changes during modification. In addition to the common adsorption bands of carbonyl groups typical for all grafted polymers, the FTIR spectrum displayed new absorption bands in the region of aliphatic stretching vibration of the modified PES membrane (2921-2875 cm(-1)), a region lacking absorption bands in the spectrum of the original membrane. It was also shown that the ATR technique enables recognition of the adsorption of albumin on the surface of the membranes. Preliminary results indicate, that spectral techniques such as subtracting and deconvolution could be applied in order to recognize the conformation of the adsorbed albumin. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：113 / 124

页数：12

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