TY - JOUR AU - 노시태 DA - 2002/11 PY - 2002 UR - http://kiss.kstudy.com/thesis/thesis-view.asp?key=1984099 UR - https://repository.hanyang.ac.kr/handle/20.500.11754/157894 AB - 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. PB - 한국공업화학회 TI - 실시간 In-situ IR을 이용한 PTMG, IPDI, Dimethylol Alkanoic Acid계 폴리우레탄 프리폴리머의 반응속도론 연구 TT - Kinetic Studies on The Synthesis of Polyurethane Prepolymer with PTMG, IPDI, Dimethylol Alkanoic Acid by Real-Time In-situ IR T2 - 응용화학 ER -