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Chemical structure water absorbency and thermal properties of poly(acrylamide-co-acrylic acid)-grafted-poly(styrene-co-methyl methacrylate)

Ros Azlinawati, Ramli and Shahrir, Hashim and Waham Ashaier, Laftah (2018) Chemical structure water absorbency and thermal properties of poly(acrylamide-co-acrylic acid)-grafted-poly(styrene-co-methyl methacrylate). In: International Conference on Process Engineering and Advanced Materials, 13 - 14 Ogos 2018 , Kuala Lumpur Convention Centre. pp. 1-8.. (Unpublished)

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Abstract

This contribution presents the characterization of poly(acrylamide-co-acrylic acid)-grafted-poly(styrene-co-methyl methacrylate) [poly(AAm-co-AAc)-g-poly(St-co-MMA)] The chemical structure of poly(AAm-co-AAc)-g-poly(St-co-MMA) microgels was proposed. The effect of MBA contents on the degree of cross-linking (%), water absorbency (EWC, %), glass transition temperature, Tg and thermal degradation were studied. Degree of cross-linking (%) and EWC, % were increase at 1.5 to 1.675 wt.% of MBA might be due to mono cross-links of MBA. The fluctuation of Tg and melting temperature (Tm) from 1.85 to 2.2 wt.% of MBA might be due to di, poly and cyclic cross-links of MBA. Decomposition of poly(AAm-co-AAc)-g-poly(St-co-MMA) was slightly affected by increasing in MBA contents from 1.5 to 2.2 wt.%. Tg of poly(AAm-co-AAc)-g-poly(St-co-MMA) was decreased at 1.5 to 1.675 wt.% of MBA due to increasing in ordered structure and crystallinity content, which led to increase in Tm.

Item Type: Conference or Workshop Item (Speech)
Uncontrolled Keywords: Microgels; Cross-linking; Emulsion; Core-shell; Network
Subjects: Q Science > QD Chemistry
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Pn. Hazlinda Abd Rahman
Date Deposited: 07 Dec 2018 00:50
Last Modified: 07 Dec 2018 00:50
URI: http://umpir.ump.edu.my/id/eprint/22131
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