Dyeability of modified polyester fibre with cationic dyes

Abstract

In a previous communication,*** we described the technology for manufacturing modified polyester (MPES) fibre in which a product from Schill and Scheilacher, Ukanol (trade mark Ukanol DMSip, sulfoisophthalic acid Na salt dimethyl ester) was used as a modifier. Data on the good dyeability of this fibre with disperse dyes without use of carriers and pressure were also reported.The research was continued to investigate the possibility of dyeing MPES fibre with cationic dyes. The laboratory experiments were conducted on dyeing equipment designed by the Central Scientific-Research Institute of Wool. For comparison, Nitron fibre was dyed in the same way (Table 1) In analyzing the results for dyeing, we noted that cationic Blue O and cationic Red 5G produced colors (blue and red, respectively) in both Nitron and MPES fibres. The color saturation was slightly lower in MPES fibre. Cationic Black Z produced a good black color in Nitron, which should have been expected, and MPES fibre was dyed a dark green color.

Improving the properties of the polyester fabrics by grafting with 3-chloro-2-hydroxypropyl acrylate

“…Chemical modification of polyester fibers is an important method to improve the dyeing ability. [25][26][27][28][29] The aims of this work were (1) increasing the hygroscopicity of the polyester fiber materials (a necessary requirement for the garments to exhibit adequate hygienic and functional properties) and (2) dyeing these materials with cationic dyes. For this purpose, the samples were grafted with 3-chloro-2-hydroxypropyl acrylate (CHPA), obtained as a main product by reaction of the acrylic acid with epichlorohydrin catalyzed by zirconium silicate beads.…”

“…Chemical modification of polyester fibers is an important method to improve the dyeing ability. 25–29…”

Discussion on Avoidance of Staining Problem in Cotton/CDPET Dyeing

“…Again, the hydrolysing of this modified polymer takes place more readily as it is highly sensitive to heat setting. A comprehensive research has been undertaken on CDP [6][7][8] as a result of the brilliant colour that the dyed fabric displayed and higher colour yield, as well as better wet and sublimation fastnesses and the rest. The application of cationic dyes has been successfully performed at 100 o C and normal pressure on easy cationic dyeable polyester (ECDP) while the dyeing of blends made up of comprising ECDP and cellulosic or protein fibres could be accomplished without damaging the fibres [9].…”

Modification of Polyester and Polyamide Fabrics by Atmospheric Pressure Glow Discharge Plasma

“…On the other hand, much research has been done to enhance the dyeability of PET fabrics with basic and acid dyes [21][22][23] but only few researches concern with plasma effect [24][25][26][27].…”