Abstract

Amorn Chaiyasat^{1, 2}, Sirinard Jearanai¹, Somporn Moonmangmee³, Duangtip Moonmangmee⁴, Lew P Christopher⁵, Md Nur Alam⁵ and Preeyaporn Chaiyasat^1,2

DOI : http://dx.doi.org/10.13005/ojc/340404

The green bacterial cellulose (BC)-based hydrogel materials have successfully prepared by modification and crosslink BC. BC was derived from acetic acid bacteria isolated and selected from ripe fruits. The production of BC was performed by fermentation in various media. It was found that using liquid potato medium represented the highest thickness of BC film (0.80 cm) with 2 wt% solid content covered the media. To reduce the crystallization of BC, carboxyl group was introduced onto BC chains using a carboxymethylation reaction giving carboxymethyl BC (CMBC) and subsequently crosslinked with divinyl sulfone (DVS). The extent of crosslinking influenced on the swelling properties of the hydrogels. Using large DVS amounts (>30 wt%-of CMBC), dense macromolecular network with less capacity spaces in the hydrogel was formed. The maximum water retention value of green hydrogels containing ~3.0 mmol carboxyl groups/g CMBC reached 27 (g/g).

Bacterial Cellulose; Biopolymer; Carboxymethyl Bacterial Cellulose; Hydrogel Material

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