We have studied on the diffusion of three disperse dyes into Mylar film from the finitedyebath with the carrier (0. P. P.) by the so called Cilindrically Rolled Film Method.The diffusion coefficients and the activation energies of diffusion of O. P. P. and dyeswere measured and following results were obtained.(1) The diffusion coefficient of dye into Mylar film was shown to increase withincreasing concentration of O. P. P. .The adsorption of carrier by Mylar film was increasedwith the amount of carrier in the dyebath.It may be postulated that the carrier molecule push into the interstices of the polyesterfibre and reduces the intermolecular cross-linking force，a nd will facilitate diffusion of dyesinto the fibre(2) In the high temperature dyeing， the addition of O. P. P. is fairly effective， butis inferior to the effect of carrier used at lawer temperatures.If the logarithms of the diffusion coefficents at different temperatures are plotted againstthe reciprocals of the absolute temperatures， the points do not lie on a straight line， andthe activation energy of diffusion is decreased with increasing temperature.This eHect may be attributed to the decrease in the adsorption of O. P. P. with increasmgtemperature.
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机译：我们已经研究了三种分散染料从带有载体（0. P. P.）的有限染浴中扩散到聚酯薄膜中的过程，即所谓的“ Clindrical Rolled Film Method”。测量了O. P. P.和染料的扩散系数和扩散的活化能，并获得了以下结果。 （1）染料在聚酯薄膜中的扩散系数随O.P.P.浓度的增加而增加。聚酯薄膜对载体的吸附随染液中载体的增加而增加。可以推测，载体分子会推入聚酯纤维的空隙中，降低分子间的交联力，从而促进染料向纤维中的扩散。（2）在高温染色中，OPP的添加相当合理。有效，但不如在正常温度下使用的载体效果。如果将不同温度下扩散系数的对数相对于绝对温度的倒数作图，则这些点将不在一条直线上，并且扩散的活化能会随着温度的升高而降低。该效应可能归因于温度升高对O. P. P.的吸附减少。
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