Morphology assessment of chemically modified and cryostructured poly(vinyl alcohol) hydrogel

被引：17
|
作者：
El Fray, Miroslawa
Pilaszkiewicz, Agnieszka
Swieszkowski, Wojciech
Kurzydlowski, Krzysztof J.
机构：
[1] Tech Univ Szczecin, Inst Polymer, Biomat & Funct Polymers Lab, PL-70322 Szczecin, Poland
[2] Warsaw Univ Technol, Fac Mat Engn, Warsaw, Poland
来源：
EUROPEAN POLYMER JOURNAL | 2007年 / 43卷 / 05期
关键词：
cryogel; poly(vinyl alcohol); morphology; scanning electron microscopy (SEM);
D O I：
10.1016/j.eurpolymj.2007.02.024
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The morphology of hydrogels based on poly(vinyl alcohol) (PVA) in their frozen hydrated state, modified with biologically active di- and multifunctional molecules was studied by scanning electron microscopy (SEM) with cryo-attachment. The porosity of samples was found to be more regular and ordered in the case of samples containing difunctional, and especially multifunctional carboxylic acid5 as compared to the neat PVA hydrogel. The morphology is dependent not only from the hydrogel composition but also the number of freezing-thawing cycles. Resulted highly porous and oriented structure has significant influence on materials properties, such as compressive stress and crosslinking density. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2035 / 2040
页数：6
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