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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 31, Number 3
JKCSEZ 31(3)
June 20, 1987 

 
Title
Analysis of Trifluoroacetyl group in PVA-polyvinyltrifluoroacetate Copolymer by the Pyrolysis Gas Chromatography

열분해 기체크로마토그래피를 이용한 PVA-polyvinyltrifluoroacetate 공중합체중의 trifluoroacetyl 기의 정량
Author
Hee-Ju Chae, Seong-Mu Jo, Hark-Soo Lyu, Toshinari Nakajima

채희주, 조성무, 유학수, 중도이성
Keywords
Abstract
열분해 기체크로마토그래피법을 이용하여 C-F 결합을 깨지 않고 PVA-PVFAc 공중합체중의 trifluoroacetyl기의 양을 정량하여, 공중합체내의 단량체 VFAc의 조성몰분율을 구하였다. GC-pyrogram에서의 trifluoroacetyl compds의 봉우리 면적은 공중합체 시료 3mg이내에서 시료무게와 직선관계을 갖는다. 서로 다른 trifuoroacetyl 치환도를 갖는 공중합체의 gas chromatogram으로부터 계산된 플루오르의 양은 이온전극법을 이용한 플루오르원소 분석치화 잘 일치한다.

The composite mole fraction of monomers in PVA-PVFAc copolymer could be calculated from the analysis of trifluoroacetyl group by the pyrolysis gas chromatography without breaking of C-F bonds in polymer. A linearity between trifluoroacetyl peak areas in pyrogram and sample weights was obtained within the range below 3mg. The data of trifluoroacetyl contents derived from gas chromatogram of copolymers with various D.S. were in good agreement with results by the Specific Ionmeter.

Page
287 - 291
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