Poly(N-vinyl-2-pyrrolidone) hydrogel production by ultraviolet radiation:: new methodologies to accelerate crosslinking

被引：74

作者：

Fechine, GJM ^{[1
]}

Barros, JAG ^{[1
]}

Catalani, LH ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Chem, BR-05513970 Sao Paulo, Brazil

来源：

POLYMER | 2004年 / 45卷 / 14期

基金：

巴西圣保罗研究基金会;

关键词：

poly(N-vinyl-2-pyrrolidone); hydrogel; photocrosslinking;

D O I：

10.1016/j.polymer.2004.05.006

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

Poly(N-vinyl-2-pyrrolidone) hydrogels produced by high-energy radiation relies on water radiolysis as a primary process leading to crosslinks. Conversely, ultraviolet direct irradiation into PVP leads to crosslinking trough pyrrolidinone rnoiety photolysis. However, this process showed to be rather inefficient. This work describes the crosslinking of poly(N-vinyl-2-pyrrolidone) based on hydrogen peroxide photolysis, therefore mimicking water radiolysis, using UV-C (e.g. low pressure Hg lamp) or UV-A radiation sources. The process efficiency and the properties of the hydrogel formed are discussed and compared with other methods of hydrogel production. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：4705 / 4709

页数：5

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