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Sulfonation of Polyamide Containing Carboxylic Acid  

Jeon, Jong-Young (Dept. of Textile Eng., Sangju National University)
Lee, Gi-Jo (Dept. of Textile Eng., Sangju National University)
Publication Information
Journal of Sericultural and Entomological Science / v.48, no.1, 2006 , pp. 1-5 More about this Journal
Abstract
Polyamide containing carboxylic acid was sulfonated with chlorosulfonic acid in dichloroethane under various conditions. The impact of the sulfonating agent concentration, the reaction temperature, and the reaction time on the ion exchange capacity was investigated. The mechanical and thermal properties, the contact angle, and the change of poly-dispersity were calculated for studying change of their properties. The reactions were effective, when the temperature was below $10^{\circ}C$ and the concentration of chlorosulfonic acid was below 0.05 mol. The value of ion exchange capacity was increased with reaction time. Thermal and mechanical properties were nearly unchanged according to the degree of sulfonation, but the contact angle was increased with increasing the value of ion exchange capacity.
Keywords
Sulfonation; Polyamide;
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