Recent advancements in natural dye applications: a review

With the public’s mature demand in recent times pressurized the textile industry for use of natural colorants, without any harmful effects on environment and aquatic ecosystem, and with more developed functionalities simultaneously. Advanced developments for the natural bio-resources and their sustainable use for multifunctional clothing are gaining pace now. Present review highlights historical overview of natural colorants, classification and predominantly processing of colorants from sources, application on textiles surfaces with the functionalities provided by them. Chemistry of natural colorants on textiles also discussed with relevance to adsorption isotherms and kinetic models for dyeing of textiles.

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Natural Colorants: Historical, Processing and Sustainable Prospects

Environmental assessment of enzyme use in industrial production-a literature review

Perspectives for natural product based agents derived from industrial plants in textile applications – a review

In recent years, the population explosion and environmental pollution have increased the interest of researchers in the discovery of new health and hygiene-related products for the well being of mankind. Among the possible approaches initiated by the textile industry, the use of low-environmental impact technologies- based on sustainable biopolymers- presents a novel possible avenue for large scale development of bioactive textiles. The purpose of this article is to review the information on the role of different biopolymers in the development of antimicrobial textiles. Increased sustainability, environment friendliness, reduced pollution, green chemistry, renewability and intrinsic biological activity are some of the attributes which make chitosan, cyclodextrin, sericin protein, and alginate suitable alternative agents for the functional finishing of textile materials. The application of biopolymers, along with the recent impact of various “green chemistry” strategies, on the antimicrobial properties of ...

Green chemistry approaches to develop antimicrobial textiles based on sustainable biopolymers—a review

Enzymatic natural dyeing of cotton and silk fabrics without metal mordants

Energy transfer and morphology study of a new iridium based cyclometalated phosphorescent complex

A new iridium-based cyclometalated complex, namely bis (2-phenylpyridine–C2, N′) iridium (III) picolinate [(ppy)2Ir(pic)] is synthesized and investigated as electrophosphorescent dopant in polymer-based organic light-emitting diodes. The photoluminescence emission from this complex is observed at 501 nm, with a shoulder at 526 nm. Poly(N-vinylcarbazole) (PVK) is used as host polymer and single-layer devices of PVK doped with (ppy)2Ir(pic) complex are fabricated. Photoluminescence (PL) spectra of PVK films doped with different concentration of iridium complex were measured to study the possible energy transfer occurring between PVK to iridium complex. A predominant blue to a completely green shifted emission is observed when the doping concentration was increased from 0% to 5 wt%. Optical and atomic force microscopic images of the doped films indicate a smooth film formation when spin coated with chlorobenzene as a solvent as compared to chloroform. Electroluminescence spectra of ITO/PEDOT:PSS/PVK...

Avani Verma

Papers

Enzymatic natural dyeing of cotton and silk fabrics without metal mordants

Energy transfer and morphology study of a new iridium based cyclometalated phosphorescent complex

Polymer Light-Emitting Diode Using a New Electrophosphorescent Cyclometalated Iridium Complex