Effect of cellulose nanocrystals content and pH on swelling behaviour of gelatin based hydrogel

Ooi, Shok Yin and Ishak Ahmad, and Mohd Cairul Iqbal Mohd Amin, (2015) Effect of cellulose nanocrystals content and pH on swelling behaviour of gelatin based hydrogel. Sains Malaysiana, 44 (6). pp. 793-799. ISSN 0126-6039


Official URL: http://www.ukm.my/jsm/malay_journals/jilid44bil6_2...


In this research, a novel method was performed to obtain hydrogel with superior thermal stability by incorporation of cellulose nanocrystals (CNC) into gelatin based hydrogel. Glutaraldehyde was used as cross-linker due to its high chemical reactivity towards NH2 group on gelatin. Different ratio of gelatin/CNC hydrogel was produced in order to study the effects of CNC towards the swelling behaviour and thermal stability of gelatin based hydrogel. The obtained hydrogel was subjected to Fourier transform infrared (FTIR) to verify that gelatin had been cross-linked, swelling test with different pH for swelling behaviour and thermogravimetric analysis (TGA) for thermal stability. The presence of C=N stretching group in the FTIR spectrum for gelatin/CNC hydrogel indicated that the cross-linking reaction between gelatin monomer had been successfully carried out. The hydrogel showed impressive pH sensitivity and maximum swelling was obtained at pH3. The TGA results clearly showed that the incorporation of CNC into gelatin was able to produce hydrogel with higher thermal stability compare to neat gelatin.

Item Type:Article
Keywords:Cellulose nanocrystals; cross-linking; gelatin; hydrogel; swelling behavior
Journal:Sains Malaysiana
ID Code:8958
Deposited By: ms aida -
Deposited On:27 Jul 2015 10:21
Last Modified:14 Dec 2016 06:48

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