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首页> 外文期刊>Man-made textiles in India >Preparation and Characterisation of Carbamoyl ethylation Cassia Saligna Gum and Their Utilization as Thickener in Textile Printing
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Preparation and Characterisation of Carbamoyl ethylation Cassia Saligna Gum and Their Utilization as Thickener in Textile Printing

机译：Preparation and Characterisation of Carbamoyl ethylation Cassia Saligna Gum and Their Utilization as Thickener in Textile Printing

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Cassia saligna gum (galactomannan) was isolated from cassia saligna seeds and subjected to chemical modification via carbamoyl ethylation. The latter involved reaction of the gum with acrylamide in the presence of sodium hydroxide as a catalyst, under a variety of conditions. Variables studied included concentration of the etherifying agents, the preparation medium and the reaction temperature. It was found that the extent of the reaction expressed as a percent of nitrogen increases by increasing the acrylamide concentration. Higher percent of nitrogen values were obtained in non-aqueous medium. The temperature plays a dominant role in the extent of the reaction. Carbamoyethylation of cassia saligna gum converts it to water soluble product which resist fermentation by storing. The rheological properties and apparent viscosity at varios rates of shear was invstigated. The results obtained indicate that carbamoylethylated cassia saligna gum could be used safely as thickeners in printing of cotton and polyester fabrics using silk screen printing instead of sodium alginate.

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