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Synthesis, preparation and characterization of Amine - Induced bacterial cellulose - Poly (Vinyl alcohol) semi-interpenetrating network Hydrogel

Arikibe, Joachim E. and Lata, Roselyn A. and Rohindra, David (2019) Synthesis, preparation and characterization of Amine - Induced bacterial cellulose - Poly (Vinyl alcohol) semi-interpenetrating network Hydrogel. UNSPECIFIED.

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Abstract

Bacterial cellulose (BC) was synthesized using Gluconacetobacter xylinus (BCRC 14182). Powdered BC was dissolved in solution of Bis(ethylenediamine) copper (II) hydroxide (Cu-en) solution to introduce the amine (NH2) group onto the BC network to yield modified BC (mBC) which was blended with poly (vinyl alcohol) (PVA) and subsequently crosslinked with 2% genipin (Gp) solution. Pristine, modified and crosslinked hydrogels was studied using Fourier Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and swelling behavior in water. FTIR revealed a distortion of the BC network via a reduction in the absorption of OH peak of mBC and the emergence of peaks at 1587 and 1560 cm-1 attributed to N-H stretching of the induced NH2 group. SEM confirmed the 3-D fibril and porous structure of BC which became distorted after modification and crosslinking. The hydrogels showed equilibrium water content of 86.5, 67.5, 66.7 and 33.0 % for BC, PVA, mBC-PVA and mBC-PVA-Gp, respectively. The decreased swelling in mBC-PVA-Gp indicated structure becoming compact due to crosslinking by genipin.

Item Type: Other
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences
Depositing User: Ms Shalni Sanjana
Date Deposited: 26 Feb 2021 10:38
Last Modified: 26 Feb 2021 10:38
URI: http://repository.usp.ac.fj/id/eprint/12639
UNSPECIFIED

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