Determination of kinetic parameters for reactive dyeing from concentration profiles. II Reactive dyes for cellulose.

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  • Motomura Hiromi
    School of Engineering, Tokyo University of Agriculture and Technology
  • Morita Zenzo
    School of Engineering, Tokyo University of Agriculture and Technology

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Other Title
  • 濃度分布からの反応染料の染色速度パラメータの決定　ＩＩ　　セルロース用反応染料
  • ノウド ブンプ カラ ノ ハンノウ センリョウ ノ センショク ソクド パラメ
  • II. REACTIVE DYES FOR CELLULOSE
  • 第2報　セルロース用反応染料

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Abstract

According to the theory and the calculation method, reported in a previous paper5), the kinetic parameters for reactive dyeing of cellulose were obtained. It was confirmed that the diffusion coefficient of reactive dyes had no concentration dependence. The diffusion/reaction behaviors for monochlorotriazinyl, trichloropyrimidinyl, vinylsulfonyl and dichloroquinoxaline-carbonyl dyes were described by the theory in which the pseudofirst-order rate constant, kw, of hydrolysis for the active species was regarded to be null. Depending on the pseudofirst-order rate constant, kc, of reaction with cellulose and time t, the contribution of fixed species on the variance, Vt, between the theoretical and experimental profiles for active and fixed species changed.<br>At high pH region for dichlorotriazinyl dyes, the Vt converged to a value larger than 3, where the variance, Va, between both the profiles for active species became very large. Predetermining the values of D and Co, the variance, Vf, for the fixed species converged, where the values of kc, and kw could be determined.<br>The fittest values of parameters for various diffusion times confirm the validity of their values as well as that of the applied theory.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 43 (4), 204-210, 1987

    The Society of Fiber Science and Technology, Japan

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