Hydrophilic comonomer impact on poly(vinyl alcohol-co-methyl methacrylate) based hydrogel coating

Ghani, S.M.M. and Rabat, N.E. and Ramli, R.A. and Majid, M.F. and Yahya, W.Z.N. (2020) Hydrophilic comonomer impact on poly(vinyl alcohol-co-methyl methacrylate) based hydrogel coating. In: UNSPECIFIED.

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Abstract

Presence of functional group in monomer chain is significantly affect the properties of finished coating. Thus, this study reports the copolymerization and behaviors of PVA and MMA with three different monomers with different functional group namely AAm, AAc and EG. Four type of hydrogel coating were synthesized via semi batch emulsion polymerization namely HAAC, HEG, HAAM and PVA-MMA. The functional groups of all coating were confirmed by FTIR spectra analysis and collapsed microgels with size less than 0.5 mm were observed grafted on the surface of hydrogel using FESEM. HAAM shows the highest water absorbency of up to 81 of its weight. Thermal decomposition showed rapid degradation rate of HEG at the initial curve compared to other coating samples. Nevertheless, due to strong bonding of carbonyl group and the carbon steel, HAAC has the highest adhesion strength of 4.0 MPa. Among HAAM, HAAC and HEG, amide has greatly improved the water absorbency, carboxyl aided the adhesion strength and hydroxyl has led to denser matrices of hydrogel coating. © 2019 Elsevier Ltd. All rights reserved.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 3; Conference of 4th International Conference on Green Chemical Engineering and Technology: Materials Science, GCET 2019 ; Conference Date: 1 October 2019 Through 2 October 2019; Conference Code:163592
Uncontrolled Keywords: Acrylic monomers; Amides; Bond strength (materials); Coatings; Copolymerization; Decomposition; Degradation; Emulsification; Emulsion polymerization; Esters; Fourier transform infrared spectroscopy; Hydrogels, Copolymerisation; Equilibrium water contents; Hydrogel coatings; Hydrophilic co monomers; Methyl methacrylates; Poly (vinyl alcohol) (PVA); Poly(vinyl alcohol); Poly(vinyl alcohol) (PVA); Property; Water absorbency, Adhesion
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 10 Nov 2023 03:28
Last Modified: 10 Nov 2023 03:28
URI: https://khub.utp.edu.my/scholars/id/eprint/13721

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