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KMID : 0525720150200020090
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Journal of Chitin and Chitosan
2015 Volume.20 No. 2 p.90 ~ p.94
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Swelling Behaviors of Superabsorbent Hydrogels Containing Carboxymethyl Chitosan and Carboxymethyl Cellulose
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Kim Jin
Kim Yong-Moon
Lee Ki-Young
Lee Chang-Moon
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Abstract
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The purpose of this study was to prepare and characterize the superabsorbent polyacrylate hydrogel containing carboxymethyl cellulose (CMC) and carboxymethyl chitosan (CMCS). In addition, cinnamon oil obtained from the inner bark of several trees was added to give antibiotic and anti-inflammatory effects on the hydrogels. The surface morphologies of the superabsorbent hydrogels were observed by scanning electron microscopy (SEM). As the CMCS contents increased in the hydrogel of 0.75 g CMC, the pore size decreased and the pore was uniformly distributed over the whole surface of the hydrogels. Swelling properties of the superabsorbent polyacrylate hydrogel containing CMC and CMCS were investigated at 24 h in distilled water (DW) at room temperature. The polyacrylic acid hydrogel exhibited swelling ability of 131.6 (g/g) at 24 h in DW, whereas as the CMC and CMCS contents were increased in the hydrogels, the swelling ability decreased significantly at the same time. Interestingly, when the amount of CMC and CMCS was 0.75 and 0.1 g, respectively, the higher swelling ability of the hydrogel showed compared with the polyacrylic acid hydrogel. There was no influence of cinnamon on the swelling properties of the hydrogels. In this study, we found that the polyacrylate hydrogels containing CMC, CMCS and cinnamon can show higher swelling ability compared with the polyacrylate hydrogel. Therefore, it can be expected that the more safe and biodegradable superabsorbent hydrogel can be developed by adding biopolymers.
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KEYWORD
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Superabsorbent, Hydrogel, Carboxymethyl cellulose, Poly acrylic acid, Carboxymethyl chitosan
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