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Effects of Crosslinking Methods on Structure and Properties of Cellulose/PVA Hydrogels
Author(s) -
Chang Chunyu,
Lue Ang,
Zhang Lina
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800161
Subject(s) - self healing hydrogels , cellulose , swelling , chemical engineering , aqueous solution , polymer chemistry , miscibility , fourier transform infrared spectroscopy , materials science , chemical modification , chemistry , organic chemistry , polymer , composite material , engineering
Abstract A series of hydrogels were prepared from cellulose and PVA in NaOH/urea aqueous solution using both physical and chemical crosslinking methods. The hydrogels were secure and biodegradable materials. Their structure and properties were characterized by FTIR spectroscopy, DSC, XRD and SEM. The results indicated that all of the cellulose/PVA hydrogels exhibited homogeneous porous structures and a certain miscibility. The swelling degree and water uptake of the chemical hydrogels were markedly higher than those of the physical hydrogel. This work demonstrates two novel methods to prepare cellulose/PVA hydrogels with different functional properties via a green process.