Simulation of absorption spectra of polyenes produced in PVA film by heating and kinetics of polyenes formation.
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概要
- 論文の詳細を見る
Characteristics of absorption spectra of heated PVA film could be simulated as combinations of absorption spectra of free polyenes corresponding to the type –(CH=CH)<I><SUB>n</SUB></I>– (<I>n</I>=1–13). The change in concentrations of polyenes produced in PVA films was calculated by means of simulation. Each polyene –(CH=CH)<I><SUB>n</SUB></I>– was assumed to be produced by a first order reaction with rate constant <I>k<SUB>n</SUB></I> with respect to the concentration of –(CH=CH)<SUB><I>n</I>−1</SUB>–. <I>k<SUB>n</SUB></I> values (<I>n</I>=1–13) at several temperatures were obtained. Arrhenius plots of <I>k<SUB>n</SUB></I> from straight lines, giving activation energies 57–63 kJ mol<SUP>−1</SUP> for the reaction catalyzed by H<SUB>3</SUB>PO<SUB>4</SUB> and 94–100 kJ mol<SUP>−1</SUP> for that by H<SUB>2</SUB>SO<SUB>4</SUB>. The activation entropies are negative in both cases.
- 公益社団法人 日本化学会の論文
著者
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Fujii Nobuyuki
Department Of Chemistry Nagaoka University Of Technology
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Tanizaki Yoshie
Department Of Chemistry Nagaoka University Of Technology
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Maruyama Kazunori
Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo
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Fujii Nobuyuki
Department of Materials Science and Technology, Technological University of Nagaoka
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Maruyama Kazunori
Department of Materials Science and Technology, Technological University of Nagaoka
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Také Michio
Department of Materials Science and Technology, Technological University of Nagaoka
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