Effect of acids on the radiational grafting of methacrylamide to the cellulose of cotton fabric

The effect of selected organic acids, sulphuric acid and ammonium chloride on the gamma-ray-induced grafting of cotton fabrics with methacrylamide is described. During irradiation the degree of grafting passes through a maximum at pH+2.4-3.1 for all the acids.

Technological peculiarities of alkaline crimping of cotton fabric by the resist method

The effect of the basic technological parameters of the process - concentration of the sodium hydroxide solution and amounts of the water-repellent and crosslinking agents included in the resist printing paste - on the quality and stability of the crimp effect is estimated. The influence of the fabric structure is also taken into account...

Novel pigment binders based on S-thiosulphato (Bunte salt) terminated polyethers

An initial study has been undertaken to determine the viability of using S-thiosulphato (Bunte salt) terminated polyethers as pigment binders. Three such polymers of different molecular mass and functionality were investigated. Two substrates were employed: wool fabric as prepared for dyeing and cotton fabric modified with a cationic poly..

Effect of selected concentrations of reactive dyes on the mechanical properties of cotton (gada) fabric

The effect of two reactive dyes on the mechanical properties of cotton fabrics is studied. The crease recovery, breaking strength and elongation of the fabric samples decrease with an increase in dye concentration of both dyes.

Application of chrome mordant dyes on silk

An investigation into the dyeing of silk with chrome mordant dyes is reported. Different metal salts were used for complex formation to get various shades. Lightfastness and washfastness were also tested. Overall the results for the chrome dyeing of silk were favourable. The mordants which produced the best fastness properties were nickel..

Reducing environmental contamination by indigo in continuous dyeing of cotton denim yarn

The amount of unfixed indigo that is removed from denim yarn in the wash boxes on continous dyeing ranges is influenced strongly by the application method used during dyeing. A new dyeing technique that permits the use of much less indigo to achieve a given shade results in much lower concentrations of indigo in the effluent. This pH-cont..

Dyeing with supercritical carbon dioxide physico-chemical fundamentals

The fundamental principles of a new dyeing process are described in which the water of conventional dye liquors is replaced completely by supercritical carbon dioxide. Some physico-chemical interrelationships in supercritical fluid systems which play a role in this process are explained. A suitable apparatus for dyeing with supercritical ..

Quantification of the effectiveness of some phosphonates on the enhancement of wool dyeing

A quantitative measure was reached for enhanced wool dyeing by Sandolan Milling Violet N-FBL in the presence of phosphonates. The increase in dye uptake percentage runs parallel to pK values of the applied phosphonates.

Influence of UV laser irradiation on the wettability and adhesion properties of synthetic fibres

Ablation products must be removed to achieve better bonding at laser treated surfaces. Carboxyl group formation at a surface of nylon or polyester is stimulated leading to better dyeability.

Fading of vinylsulphonyl reactive dyeings of cellulose by simultaneous effect of light and perspiration and its testing method of the colour fastness

Artificial perspiration gives a small reductive fading. Defects of JIS C 0888 are identified.