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Preparation of Water-soluble Pu-based Polymeric Dye and Dyeing of Cellulosic Fiber

Author: JinXue
Tutor: YiChangHai
School: Wuhan Textile University
Course: Textile Material and Textiles Design
Keywords: Water-soluble Polyurethane Polymer reactive dyes Synthesis Dyeing properties
CLC: TS193.8
Type: Master's thesis
Year: 2010
Downloads: 116
Quote: 0
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Abstract


Article diazo coupling method of the vinyl sulfone type azobenzene chromophore grafted to the polyurethane main chain, prepared a new kind of water-soluble reactive dye of a polyurethane base polymer. By gel permeation chromatography analysis of the molecular weight and molecular weight distribution prepared polymeric dye, the result is Mn = 31700, Mw = 46000, polydispersity coefficient = 1.45. IR analysis, Raman spectroscopy, nuclear magnetic resonance analysis, UV - visible analysis were used to characterize the structure of the prepared polymer dye, the analysis of the results and the actual design of the dye molecule structure is basically the same. The thermal properties, of the polymeric dye of the results showed that the polymeric dye has a good thermal stability, can be applied with conventional dyeing. Studied the dissolution properties of the polymeric dye results show that the polymeric dye at room temperature, has excellent solvent resistance, insoluble Usually a conventional solvent, also found that the polymer dye in hot water of 80 ° C or above can be completely dissolved. Study the class of azo polymer dye the pH sensitivity of the results showed that the the prepared polymer dye pH value have a great response, especially with the acidic enhanced, the aqueous dye solution redshift. Light response prepared azo polymer dye performance results show that the the polymer dye 365nm UV light has a certain response performance, but the light response rate slower. The dyeing properties of the polymer dye on cotton fabric. One-dip bath, the kind of alkali agent, dye pH, liquor ratio, the concentration of the alkaline agent, the electrolyte concentration, the dyeing temperature, the temperature of the solid color dyeing conditions such as the impact of the dyeing properties of cotton fabric. K / S values, washable color fastness and rubbing fastness analysis determined the staining effect. The results showed that the polymer reactive dyes can be used in the dyeing of cotton fabric, to come to a more appropriate dyeing conditions for a bath ratio of 30:1, and the bicarbonate concentration to 15g / L, sodium chloride concentration of 25g / L, dyeing temperature of 60 ° C fixing temperature of 60 ° C, washable color fastness and rubbing fastness grade 4-5. Ramie fabric dyeing properties of the polymer dye. The impact of the one-dip bath, the kind of alkali agent, dye pH, liquor ratio, the concentration of the alkaline agent, the electrolyte concentration, the dyeing temperature, the temperature of the solid color dyeing conditions such as the dyeing properties of the ramie fabric. K / S values, washable color fastness and rubbing fastness analysis determined the staining effect. The results showed that ramie fabric dyeing reactive dyes of the polymer can be applied to a more suitable dyeing conditions for a bath ratio of 30:1, and the bicarbonate concentration of 20g / L, sodium chloride concentration of 20 g / L dyeing temperature of 80 ℃, solid color temperature of 80 ° C, washable fastness and rubbing fastness grade 4 or above.

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CLC: > Industrial Technology > Light industry,handicrafts > Textile industry,dyeing and finishing industry > Dyeing and finishing industry > Dyeing > Dyeing of the fiber and its products
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