Original scientific paper

Studies on dyeing wool with indigo

Gulzar A. Baig orcid.org/0000-0002-7058-9207 ; University College of Textile Engineering, Multan, Punjab, Pakistan

Abstract

Wool samples were dyed with indigo through an exhaust technique at various pH values. The non-ionic form had the highest substantivity while the Ionics ones had relatively less for wool. The fibres could best be dyed in the acidic pH range. Chemistry of the dyebath and fibre was considered to explain the effects of pH on colour strength. The results showed that hydrogen bonding and ionic interactions were the main reason for the exhaustion of dye onto wool fibres. Hydrogen bonding was operated between the hydroxyl group and amide groups of the dye and the fibres respectively while ionic interactions worked at low pH values between the end-amino and ionized groups of the dye respectively.

Keywords

wool; indigo; dyeing; dyebath analysis; colorimetric properties

Hrčak ID:

138661

URI

https://hrcak.srce.hr/138661

Publication date:

1.8.2012.

Article data in other languages: croatian

Visits: 2.843 *