Diethyl carboethoxyvinylphosphonate(DECVP) was synthesized in higher yield by Wadsworth''s method than previous method. This monomer was copolymerized with acrylonitrile(AN) in N,N''-dimethyl formamide at 80℃ using benzoyl peroxide as an initiator. From the nitrogen contents of the copolymers. the monomer reactivity ratios of DECVP-AN copolymerization and Alfrey-Price''s Q and e values for the DECVP were deterimined. The results obtained was γ_DECVP〓0.16, γ_AN 〓5.59, Q_DECVP〓0.16 and e_DECVP〓1.53. Thermal properties of the poly(DECVP-co-AN) were measured by thermogravimetric analysis. As the results, slightly lower initial decomposition tempreature and much higher char yield were observed in the copolymer when compared to poly(acrylonitrile).

Diethyl carboethoxyvinylphosphonate (DECVP)를 Wadsworth의 합성법을 이용하여 이전의 연구보다 높은 수율로 합성하였다. 이 단량체와 acrylonitrile(AN)를 80℃의 디메틸포름아미드 용액에서 라디칼 공중합하였다. DECVP-AN 공중합의 단량체 반응성비와 Alfrey-Price의 식을 이용하여 DECVP씨 Q 및 e값을 결정하였다. 그 결과는 γDECVP〓0.16,γ_AN〓5.59, Q_DECVP〓0.16, eDECVP〓1.53의 값을 얻었다. Poly(AN- co -DECVP)의 열적성질을 열중량분석으로 살펴본 결과 공중합체는 poly(acrylonitrile) 보다 약간 낮은 초기분해 온도를 나타내었지만 높은 잔사량을 나타내었다.

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