PPS preparation. A kinetic study and the effect of water on the polymerization.
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概要
- 論文の詳細を見る
A kinetic study on poly (<I>p</I>-phenylene sulfide) formation from <I>p</I>-dichlorobenzene (<B>1</B>) and sodium sulfide reveals that the initiation rection is first order with respect to <B>1</B> and sodium sulfide, respectively. Reaction on the surface of solid sodium sulfide has proved to be negligible when the reaction is carried out in the presence of the solid. The time course of the concentration of <B>1</B> and its dimer can be explained with a simplified eight step kinetic model for the initial stage, in which each of the step is firest order with respect to the reactant in concern. Kinetic parameters for each of the steps were estimatied. Increase in [Na<SUB>2</SUB>S]/[<B>1</B>] ratio causes the increase both in polymer yield and in the degree of polymerization. Presence of a small amount of water enhances cosiderably the rate of polymerization and increases the polymer yield, but the highest degree of polymerization was observed in the presence of water approximately equimolar to <B>1</B>.
- 公益社団法人 日本化学会の論文
著者
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Ito Masato
Department Of Applied Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Techno
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Inoue Hakuai
Department Of Bioengineering Soka University
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Ona Seiichi
Department of Chemical Engineering, Faculty of Engineering, The University of Tokyo
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Onda Masahiro
Department of Chemical Engineering, Faculty of Engineering, The University of Tokyo
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