Acrylic fibers made from 100% acrylonitrile (CH2=CHCN).So acrylic fibers are difficult to dye for their compact structure. To overcome this and to improve solubility in solvent so that the polymer may be wet or dry spinning, co-polymers are now used. Then the acrylonitrile is copolymerized Now the polymerization of acrylonitrile X, Its co-polymer is carried …
Continue reading Dyeing of Acrylic with Basic Dyebasic dye
Basic dyes also called cationic dyes, because in solution basic dye molecule ionizes. Causing it’s colored component to become a cation or positively changed radical. In market basic dyes are obtained as a basic salt usually chlorides, but sometimes oxalates or double salts with zinc chloride (ZnCl2). Basic dye specially used for jute fibre, also …
Continue reading Types and properties of Basic Dyea.Acid dye: Man made (Synthetic nylon) & Natural protein fibre (wool, silk) b.Azoic dye: Man made & Natural cellulosic fibre (Cotton, Viscose) c.Direct dye:Man made & Natural cellulosic fibre (Cotton, Viscose) d.Disperse dye: Mane made ester, cellulosic & synthetic fibres specially the acetate fibres & Polyester & less of acrylic & nylon fibre. e.Reactive dye: …
Continue reading Selection of dye according to fibre character