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Controlled-release Properties of Microencapsulated Disperse dyes

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Journal of Donghua University(English Edition) 2002年第1期19卷 84-87页

作者：罗艳李春燕陈水林 College of Chemistry and Chemical Engineering Dong Hua University Shanghai 200051

Some disperse dyes were microencapsulated by means of in- situ polymerization. These microencapsulated disperse dyes was extracted respectively by ethanol under certain conditions. The controlled-release properties of disperse dyes through the shell of microcapsules were measured by spectrophotometer. According to the results, it was drawn that the type of disperse dyes, the auxiliaries contained in disperse dyes, the quantity of system controlling medium used and the core/shell ratio of microcapsules play important roles in controlling the release properties of microcapsules. The different controlled- release properties of microcapsules, which were prepared under given conditions, however, would in turn influence the performance of microcapsules in multiple-transfer printing.

关键词： Disperse dyes, In-situ Polymerization, Microencapsulation, Controlled-Release Properties.

Quantum Efficiency of Fluorescent dyes and Color Matching

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Journal of Donghua University(English Edition) 2002年第3期19卷 48-51页

作者：李戎陈东辉 College of Chemistry and Chemical Engineering Dong Hua University Shanghai 200051

Because of the special optical characters, the color matching of fluorescent dyes is quite complicated. In order to find the algorithm of the color matching of fluorescent dyes, some experiments and measurements of one kind of fluorescent dye were carried out. An elementary probe into the method of color matching of fluorescent dyes has been made through the expression deduced by James S. Bonham and standard Kubelka-Munk theory. The results prove that the method has a great applicability for the color matching of fabric dyed with only one kind of fluorescent dye.

关键词： fluorescent dyes, fluorescent quantum efficiency,color matching.

Kinetics of dyes Adsorbed by Chitosan

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Journal of Donghua University(English Edition) 2002年第4期19卷 80-83页

作者：陈亮陈东辉高亮 School of Environmental Science and Engineering Dong Hua UenivereityShanghai.200051

A study on adsorption of Acidic Blue RAWL and Cationic Blue X-GRRL dyes by chitosan have been *** adsorption kinetic parameters including adsorption rate K and effective diffusing coefficient D'i under the optimal pH ranges have been determined. Analysis through the enthalpy calculation reveals a substantial thermodynamic difference between the adsorption processes of the two dyes, which helps to understand the adsorption mechanism by chitosan.

关键词： Chitosan, Adsorption, dyes, Kinetics

Preparation and Application of Microencapsulated Disperse dyes

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Journal of Donghua University(English Edition) 2001年第3期18卷 97-99页

作者： Luo Yan(罗艳) Chen Shuilin(陈水林) College of Chemistry and Chemical Engineering Dong Hua University Shanghai 200051 College of Chemistry and Chemical Engineering Dong Hua University Shanghai 200051

Microcapsules containing disperse dyes were prepared by means of in-situ polymerization. Polyester fabrics were multiple-transfer printed and color-mix printed using those microencapsulated dyes under different process conditions. By color measurement instrument, it can be seen that the times of multiple-transfer printing are up to ten while under appropriate conditions, especially when the transfer printing time is 50 seconds and the transfer printing temperature is 180°C. On the other hand, the K/S value of each transfer printing can keep almost constant. Meanwhile, the visual effect of color- mix printing with microencapsulated disperse dyes is special in the varicolored exhibiting if compared with conventional disperse dyes.

关键词： Disperse dyes, Microencapsulated , In- situ polymerization, Printing.