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

Siti Musliha, Mat Ghani and Nurul Ekmi, Rabat and Ros Azlinawati, Ramli and Mohd Faridzuan, Majid and Wan Zaireen N., Yahya (2020) Hydrophilic comonomer impact on poly(vinyl alcohol-co-methyl methacrylate) based hydrogel coating. In: Materials Today: Proceedings; 4th International Conference on Green Chemical Engineering and Technology: Materials Science, GCET 2019 , 1-2 October 2019 , Melaka. pp. 54-59., 31 (163592). ISSN 2214-7853

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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.

Item Type:	Conference or Workshop Item (Lecture)
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Adhesion; Copolymer; Emulsion; Equilibrium water content; Functional group; Hydrogel coating
Subjects:	H Social Sciences > HD Industries. Land use. Labor Q Science > Q Science (General) T Technology > T Technology (General) T Technology > TP Chemical technology
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Mr Muhamad Firdaus Janih@Jaini
Date Deposited:	27 Jan 2023 01:39
Last Modified:	27 Jan 2023 01:39
URI:	http://umpir.ump.edu.my/id/eprint/35624
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