Swelling Behavior of Polyacrylamide-Cellulose Nanocrystal Hydrogels: Swelling Kinetics, Temperature, and pH Effects

This paper reports swelling behavior of cellulose nanocrystal (CNC)-based polyacrylamide hydrogels prepared by a radical polymerization. The CNC acts as a nanofiller through the formation of complexation and intermolecular interaction. FTIR spectroscopy and XRD studies confirmed the formation of int...

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Bibliographic Details
Published in:Materials 2019-06, Vol.12 (13), p.2080
Main Authors: Jayaramudu, Tippabattini, Ko, Hyun-U, Kim, Hyun Chan, Kim, Jung Woong, Kim, Jaehwan
Format: Article
Language:English
Subjects:
Acrylamide
Cellulose
Cotton
Fourier transforms
Free radicals
Hydrogels
Hydroxyl groups
Kinetics
Microscopy
Nanocrystals
Nanoparticles
Polyacrylamide
Polymerization
Polymers
Polyvinyl alcohol
Retention
Room temperature
Silicon wafers
Smart materials
Spectrum analysis
Swelling ratio
Temperature effects
Thermogravimetric analysis
Tissue engineering
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Summary:This paper reports swelling behavior of cellulose nanocrystal (CNC)-based polyacrylamide hydrogels prepared by a radical polymerization. The CNC acts as a nanofiller through the formation of complexation and intermolecular interaction. FTIR spectroscopy and XRD studies confirmed the formation of intermolecular bonds between the acrylamide and hydroxyl groups of CNC. The swelling ratio and water retention were studied in de-ionized (DI) water at room temperature, and the temperature effect on the swelling ratio was investigated. Further, the pH effect on the swelling ratio was studied with different temperature levels. Increasing the pH with temperature, the prepared hydrogel shows 6 times higher swelling ratio than the initial condition. The swelling kinetics of the developed hydrogels explains that the diffusion mechanism is Fickian diffusion mechanism. Since the developed hydrogels have good swelling behaviors with respect to pH and temperature, they can be used as smart materials in the field of controlled drug delivery applications.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma12132080