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.
Full text not available from this repository.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: | 25 Feb 2021 22:38 |
| Last Modified: | 25 Feb 2021 22:38 |
| URI: | https://repository.usp.ac.fj/id/eprint/12639 |
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