$ZnCl_{2}$ 수용액에서의 Acrylonitrile-Methyl acrylate-Itaconic acid 3원 공중합체의 합성 및 특성 연구(II) -공단량체 함량의 효과-

A Study on the Synthesis and Characterization of Poly(Acrylonitrile-Methylacrylate-Itaconic acid) Initiated by Redox System in Zinc Chloride Slution(II) -Effect of Comonomer Content-

This study is concerned with copolymerization of acrylonitrile(AN) with methyl acrylagte(MA) and itaconic acid(IA) using the sodium sulfite/sodium chlorate initiator in aqueous zinc chloride($ZnCl_{2}$) solution. Since the itaconic acid(IA) comonomer is a potential initiator of cyclization, the introduction of IA comonomer into polyacrylonitrile(PAN) precursor can depress the onset and peak temperatures of the DSC exothermic peak obtained in the course of oxidative heating. With increase in the IA content, the conversion of acrylonitrile(AN) and the rate of polymerization were reduced. The comonomer content, as well as the nature of the comonomer, played a significant role in the stabilization process of the copolymer. The best result was obtained at about 2 mol% of IA.