SORPTION OF AZO DYES CONTAINING A TRIFLUOROMETHYL GROUP BY A NYLON 6 FILM
SORPTION OF AZO DYES CONTAINING A TRIFLUOROMETHYL GROUP BY A NYLON 6 FILM
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尼龙 6 薄膜对含有三氟甲基的偶氮染料的吸附
DOI：
10.2115/fiber.47.12_664
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
M. Mitsuishi
中科院分区：
文献类型：
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作者：
K. Hamada;Seiko Takemae;M. Mitsuishi
合成了含氟的1-苯基偶氮-2-羟基-6-萘磺酸钠衍生物，研究了它们在尼龙6膜上的吸附行为。在333- 363 K（pH=3）条件下，吸附7天后，吸附量仍未达到平衡。基于双吸附机理的吸附等温线分析给出了分配系数和Langmuir型吸附的参数。前者依赖于吸附时间，而后者则不依赖。Langmuir型吸附的热力学参数不仅受取代基种类的影响，而且受取代基位置的影响。用Hammet规则可以解释取代基的这种效应。
The derivatives of sodium 1-phenylazo-2-hydroxy-6-naphthalenesulfonate, some of which contains fluorine atoms, were prepared and their sorption behavior by a nylon 6 film was investigated. For all the dyes used, the amount of dye sorbed increased with sorption time, and equilibrium sorption was not established even after the sorption for 7 days at 333-363K (pH=3). The analysis of the sorption isotherms based on the dual sorption mechanism gave the partition coefficients and the parameters for the Langmuir type sorption. The former was dependent on the sorption time, while the latter was not. The thermodynamic parameters for the Langmuir type sorption were greatly influenced not only by the kinds of the substituents but also by their position. It was possible to explain such effects of the substituents by using Hammet's rule.