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Determination of crosslinking density of hydrogels prepared from microcrystalline cellulose
Author(s) -
Xia Zhiyong,
Patchan Marcia,
Maranchi Jeffrey,
Elisseeff Jennifer,
Trexler Morgana
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38052
Subject(s) - self healing hydrogels , microcrystalline cellulose , cellulose , materials science , polymer chemistry , polymer science , chemical engineering , thermodynamics , physics , engineering
Hydrogels with four different plant‐based microcrystalline cellulose concentrations were prepared using the self‐assembly technique. The interaction parameter between cellulose and water was determined by the classical Flory‐Huggins theory, and was found to be around 0.44 with weak concentration dependence. The crosslinking density in these hydrogels was measured by both the Mooney‐Rivlin equation and the Flory‐Rehner theory. Reasonable consistency was found between the two methods albeit results from the Flory‐Rehner theory were slightly higher due to the contribution from the physical crosslinks. The crosslinking density values for all four hydrogels determined from both methods were found to range from 19 to 56 mol/m 3 . © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013