Water-soluble polymers have versatile applications but they are hardly used in wet processing of cellulosic substrates (cotton, viscose, jute, etc.), particularly in dyeing. In this paper, one such water-soluble polymer, polyacrylic acid has been synthesized, characterized and applied to viscose fabric in conjunction with various types of reactive dyes, namely triazinyl, vinyl sulphone, high ex...

We have characterised a dye-sensitised nanoporous nanocrystalline titania film used in prototype photoelectrochemical solar cell production. The film was sensitised with two types of ruthenium (II) based dyes for different times, between 0.5 and 24 hours. The penetration and coverage for each type of dye was studied using Confocal Laser Scanning Microscopy (CLSM). Varying laser powers were appl...

Justicia spicigera (muicle) is a plant that has been used from the pre-Hispanic era to contemporary times in Mexico. It has been used in the traditional medicine for healing diseases such as dysentery, diabetes, leukemia, and anemia, just to mention some human disorders. It has been used for obtaining indigo dye after making extraction with water to be used for coloring of baskets, crafts, and ...

Textile industry is one of the most polluting industries due to large quantities dyeing wastewater it generates and discharges. Herein, we report an eco-friendly sustainable circular coloration technology based on cationic polyelectrolyte complex realise salt-free, zero-effluent-discharge for cotton fabrics with a recyclable dyebath by using typical polyhexamethylene biguanide (PHMB) bonded ani...

The production of textiles is the second most polluting industry worldwide. Non-biodegradable petroleum-based dyes, toxic compounds to fix colors on textiles, and release large quantities these colorants complicated agents into neighboring environment are key causes this issue. On other hand, natural dyes chemicals prevalent in nature with eco-friendly properties. These recyclable biodegradable...

The first part of this article (Mar.8;ADR) presented some fundamenta aspects of dyeing quality control irgeneral. This part (11) present:specific details of controlling batctjye processes. Critical quality conlrol parapeters are discussed foitarious dye classes, equipmentxocesses, and substrates. AlsoYiagnostic tests and repair pro:edures are presente...

Anthocyanins are natural dye substances that provide attractive colors from red to blue. However, large quantities of Anthocyanins have been found in wastewater from soaked black beans, resulting in environmental pollution. The utilization of theses wastewaters would therefore be an effective way of reducing environmental pollution, and the water could be used to dye silk fabric, displaying...