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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 21, Number 3
JKCSEZ 21(3)
June 20, 1977

Title	Copolymerization of Bis(β-chloroethyl)vinylphosphonate and vinyl Acetate 비닐포스폰산 비스 β-클로로에틸과 초산비닐의 혼성중합
Author	Jung-Il Jin, Hoe-Sup Byun, Yoo-Mi Park 진정일, 변회섭, 박유미
Keywords
Abstract	비닐포스폰산 비스-β-클로로에틸(BCVP)과 초산비닐(VAc)의 혼성중합을 50℃에서 행하여 단위체 반응성비를 구하였다. 이때 과산화벤조일을 개시제로 사용하였으며, 얻은 반응성비는 아래와 같다. r1 (VAc) = 0.33, r2 (BCVP) = 0.47 이 값과 Alfrey-Price식을 이용하여 비닐포스폰산 비스-β-클로로에틸의 Q와 e값을 계산하니 Q = 0.06 및 e = 1.1을 얻었다. 이 두 단위체로부터 얻어지는 혼성중합체중의 단위체 서열분포와 평균서열 길이를 통계적으로 분석한 결과 혼성중합체가 비교적 높은 교대경향을 갖고 있음을 알았다. 또한 혼성중합체중에 비닐포스폰산 비스-β-클로로에틸의 함량이 많을 수록 열안정성이 나뻐짐을 열시차분석에서 관찰하였다. The free radical initiated copolymerization of vinyl acetate (VAc) and bis(β-chloroethyl)vinylphosphonate (BCVP) was studied. The monomer reactivity ratios for the monomer pair determined at 50℃ using benzoyl peroxide as an initiator are: r1 (VAc) = 0.33, r2 (BCVP) = 0.47 The values of Alfrey-Price's Q and e for the bis(β-chloroethyl)vinylphosphonate were calculated to be 0.06 and 1.1, respectively. The statistical analyses for the monomer sequence distribution and the mean sequence length show that the copolymer formed from these two monomers are of fairly alternating tendency. Differential thermal analysis showed that thermal stability of the copolymers decreases as the content of BCVP in the copolymer increases.
Page	219 - 224
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