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Study on Graft Copolymerization of Chitosan with Methyl Acrylic Acid and Thermal Behavior of Products

Kun Zhang

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Abstract

The graft copolymerization of chitosan (Cs) with methyl acrylic acid (MAA) was carried out by using (NH 4) 2Ce(NO 3) 6 as initiator. The effects of the concentration of MAA and initiator on the composition of the graft copolymer, and the thermal properties of Cs and its graft copolymer were studied. The results showed that the graft ratio, graft efficiency, content of homopolymer and the total conversion ratio increased first and then decreased with the increase of the concentration of MAA and initiator. The crystal structure of Cs was destroyed due to the grafting co-polymerization, and resulting to a certain extent in the decreasing of the thermal stability of Cs.

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What this paper is about

The graft copolymerization of chitosan (Cs) with methyl acrylic acid (MAA) was carried out by using (NH 4) 2Ce(NO 3) 6 as initiator. The effects of the concentration of MAA and initiator on the composition of the graft copolymer, and the thermal properties of Cs and its graft copolymer were studied. The results showed that the graft ratio, graft efficiency, content of homopolymer and the total conversion ratio increased first and then decreased with the increase of the concentration of MAA and initiator. The crystal structure of Cs was destroyed due to the grafting co-polymerization, and resulting to a certain extent in the decreasing of the thermal stability of Cs.

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Available abstract

The graft copolymerization of chitosan (Cs) with methyl acrylic acid (MAA) was carried out by using (NH 4) 2Ce(NO 3) 6 as initiator. The effects of the concentration of MAA and initiator on the composition of the graft copolymer, and the thermal properties of Cs and its graft copolymer were studied. The results showed that the graft ratio, graft efficiency, content of homopolymer and the total conversion ratio increased first and then decreased with the increase of the concentration of MAA and initiator. The crystal structure of Cs was destroyed due to the grafting co-polymerization, and resulting to a certain extent in the decreasing of the thermal stability of Cs.

Key concepts: Copolymer, Grafting, Acrylic acid, Chitosan, Thermal stability, Polymer chemistry, Materials science, Polymerization

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