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Synthesis of hydrogel from sugarcane bagasse extracted cellulose for swelling properties study

Ban, Mei Teng and Mahadin, Nurulain and Abd. Karim, Khairil Juhanni (2022) Synthesis of hydrogel from sugarcane bagasse extracted cellulose for swelling properties study. In: 4th International Conference on Soft Materials, ICSM 2020, 13 December 2020 - 18 December 2020, Jaipur, India.

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Official URL: http://dx.doi.org/10.1016/j.matpr.2021.08.342

Abstract

Insolubility of cellulose in common solvent had been a challenge in generating cellulose hydrogels. In the present work, hydrogels from sugarcane bagasse extracted cellulose and modify with synthetic polymer, poly (vinyl alcohol) (PVA) and cross-linker, glutaraldehyde (GA) was synthesize. Cellulose was isolated from sugarcane bagasse via pre-treatment with 4 vol% sulphuric acid (H2SO4) and 10 wt% sodium hydroxide (NaOH) solution. The cellulose extracted was dissolved in ZnCl2/CaCl2 solution at 65 ℃ to fabricate self-standing cellulose hydrogel without cross-linker. Another cellulose hydrogel was generated and immersed into 5 wt% GA solution to cross-link the cellulose chains. To improve the stability and swelling properties of cellulose, PVA was introduced into the hydrogel by using GA to cross-link cellulose chains with PVA chains. The resulting hydrogels were characterized with Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy and solid state 13C Nuclear Magnetic Resonance (NMR) spectroscopy for structural determination. Three self-standing cellulose-based hydrogels, including regenerated cellulose (RC), GA cross-linked cellulose (C-GA), followed by PVA and GA cross-linked cellulose (CGA-PVA) were successfully generated from ZnCl2/CaCl2 dissolution system and each hydrogel possessed different physical aspects. The occurrence of chemical cross-linking reaction between cellulose, GA and PVA was further evidenced by the data analyzed from ATR-FTIR and NMR spectra. The swelling degree of hydrogels generally increase after the addition of PVA and GA into cellulose suspension, showing 52 % (RC), 80 % (C-GA) and 135 % (C-GA-PVA). C-GA-PVA possessed the best swelling capability and potential for possible application as water reservoir in agriculture.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:cellulose, glutaraldehyde, hydrogel, Poly(vinyl alcohol), sugarcane bagasse
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:101103
Deposited By: Yanti Mohd Shah
Deposited On:01 Jun 2023 08:16
Last Modified:01 Jun 2023 08:16

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