A Study of Preliminary Reaction Kinetics of Formation of PU/PMMAIPN by FTIR Spectrometry

Abstract

Abstract: Fourier transform infrared spectrograph was used to study the preliminary reaction kinetics of formation of PU/PMMA IPN. The reaction extent and kinetic constant were calculated by peak-area ratio method. It is found that the increase of the PMMA content accelerates the polymerization of PUdue to the "solvent effect" of PMMA, on the other hand, the increase of the PUcontent retards the polymerization of PMMA due to "cage effect" of PU. The polymerization of both PUand PMMA is the first order reaction. The non-simultaneous kinetics makes the compatibility worse and raising the reaction temperature and increasing the amount of the initiator are favourable to the simultaneous reaction.

Key words: FTIR spectrum, Polyetherurethane, Polymethylmethacrylate, Kinetics

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Wang Jing-yuan, Mao Kun-yuan, Li Yu-wei, Tang Xin-yi . A Study of Preliminary Reaction Kinetics of Formation of PU/PMMAIPN by FTIR Spectrometry[J]. Chem. J. Chinese Universities, 1991, 12(1): 120.

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A Study of Preliminary Reaction Kinetics of Formation of PU/PMMAIPN by FTIR Spectrometry

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