Thermal and dynamic mechanical analysis of PVA/MC blend hydrogels

被引：236

作者：

Park, JS

Park, JW

Ruckenstein, E ^{[1
]}

机构：

[1] SUNY Buffalo, Dept Chem Engn, Buffalo, NY 14260 USA

[2] Hankyong Natl Univ, Dept Food Sci & Technol, Ansung 456749, Kyunggi Do, South Korea

[3] Hankyong Natl Univ, Dept Chem Engn, Ansung 456749, Kyunggi Do, South Korea

来源：

POLYMER | 2001年 / 42卷 / 09期

关键词：

poly(vinyl alcohol); methylcellulose; blend;

D O I：

10.1016/S0032-3861(00)00768-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

New blend hydrogels based on poly(vinyl alcohol) (PVA) and methylcellulose (MC) were prepared by crosslinking in an aqueous solution with glutaraldehyde (GA) in the presence of HCl. The state of the miscibility of the blend hydrogel films was examined over the entire composition range by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Depressions of the melting and crystallization temperatures of PVA were observed with increasing MC content and crosslinking density via the DSC. The determination of the glass transition temperature of blend hydrogels by DMA indicated that they exhibit a higher miscibility than the non-crosslinked blends. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：4271 / 4280

页数：10

共 34 条

[1] SUBSTITUENT DISTRIBUTION ALONG THE CELLULOSE BACKBONE IN O-METHYLCELLULOSES USING GC AND FAB-MS FOR MONOMER AND OLIGOMER ANALYSIS [J].