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《Dyestuffs and Coloration》 2010-04
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The Parameters of Dynamics and Thermodynamics of Dyeing Super Fine Polyester with Microencapsulated Disperse Dyes

LUO Yan LI Xian ZHONG Yi DU Juan(Key Laboratory of Science & Technology of Eco-Textile,Ministry of Education,College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China)  
Microencapsulated disperse dyes with azo,anthraquinone and heterocycle structures were used to dye PET super-fine fiber with high temperature and pressure without auxiliary.The parameters of dyeing dynamics and thermodynamics,such as diffusion coefficient(Dt),half dyeing time(t1/2),specific rate constant(k')and adsorption isotherms type were investigated respectively.The results showed that the microencapsulated dyes with higher IOB values(Inorganic/Organic Balance)or IOB values being close to PET fiber presented higher Dt.The equilibrium adsorption capacity and k' increased but t1/2 decreased as Dt increased.The adsorption isotherms of different structure microencapsulated disperse dyes dyeing super-fine fiber revealed both Langmuir type and mixed type.
【Fund】: 自然科学基金(项目编号:20806016)
【CateGory Index】: TS193.1
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