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Effect of nanofillers on carboxymethyl cellulose/hydroxyethyl cellulose hydrogels
Author(s) -
Dai Qizhou,
Kadla John F.
Publication year - 2009
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.30789
Subject(s) - materials science , organoclay , swelling , carboxymethyl cellulose , composite material , self healing hydrogels , montmorillonite , hydroxyethyl cellulose , cellulose , compressive strength , modulus , chemical engineering , polymer chemistry , sodium , engineering , metallurgy
The effect of hydrophilic nanoparticles (oxidized cellulose nanocrystals (CNC) and montmorillonite nanoclay) on the properties of a sodium carboxymethylcellulose (CMC)/hydroxyethylcellulose (HEC) hydrogel system was investigated. Visually, the CNC reinforced cellulosic hydrogel‐composites were transparent over all CNC loadings, whereas those reinforced with organoclay were opaque even at low clay loadings despite the nanoparticles being well dispersed. Incorporation of CNC into the cellulosic hydrogels led to an increase in the compressive modulus of CNC‐hydrogel composites, but a corresponding decrease in the swelling ratio. However, the addition of CNCs enabled a reduction in the amount of cross‐linker required to obtain a given compressive modulus and swelling behavior. It was observed that the surface charge density of the CNCs had no significant effect on the compression modulus or swelling behavior of the CMC/HEC hydrogel composites. By contrast, the organoclay reinforced CMC/HEC hydrogels did not show any trend in compression modulus or swelling ratio with organoclay content. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009