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실시간 In-situ IR을 이용한 PTMG, IPDI, Dimethylol Alkanoic Acid계 폴리우레탄 프리폴리머의 반응속도론 연구

Title
실시간 In-situ IR을 이용한 PTMG, IPDI, Dimethylol Alkanoic Acid계 폴리우레탄 프리폴리머의 반응속도론 연구
Other Titles
Kinetic Studies on The Synthesis of Polyurethane Prepolymer with PTMG, IPDI, Dimethylol Alkanoic Acid by Real-Time In-situ IR
Author
강신춘
Issue Date
2002-11
Publisher
한국공업화학회
Citation
응용화학, v. 6, no. 2, page. 579-582
Abstract
Kinetic study of the polyurethane prepolymer formation between isophorone diisocyanat e(IPDI), poly (oxytetramethylene)glycol(PTMG), and dimethylol alkanoic acid(DMPA,DMBA) were studied in the batch system by using quantitative in-situ IR spectroscopy. The reaction rate was obtained from monitoring the change of NCO (2265 cm^-1) and C=O (1725 cm^1 ) stretching band in series IR spectra. The reaction is in accord with the first-or der for the concentration of hydroxyl groups and isocyanate group respectively, which conform to the second-order law entirely. The activation parameters obtained from the evaluation of kinetic data are △H^#=58.18 kJ/mol, △S^#=-95.98 J/mol·K and Ea=61.07 kJ/mol in bulk polymerization between PTMG and IPDI. also, The activation parameters inspected reaction of Dimethylol alkanoic free acid and IPDI of [NCO]/[OH] ratio of 1.0 at various temperature.
URI
http://kiss.kstudy.com/thesis/thesis-view.asp?key=1984099https://repository.hanyang.ac.kr/handle/20.500.11754/157956
ISSN
1226-8801
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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