A series of novel polyfunctionalized acyclic and heterocyclic dye precursors and their respective azo (hydrazone) counterpart dyes and dye precursors based on conjugate enaminones and/or enaminonitrile moieties were synthesized. The dyes and their precursors are based on 2-cyano-N-(3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-acetamide, 2-ethoxycarbonyl-N-(3-cyano-4,5,6,7-tetrahydrobenzo[b]...

The natural dyes separated from plants are of gaining interest as substitutes for synthetic dyes in food and cosmetics. Thespesia populnea (T. populnea) is widely grown plant and used in the treatment of various diseases. This study was aimed to separate natural dye from T. populnea bark and analysis of its dyeing property on different fabrics. In this investigation pharmacognostic study was ca...

ABSTRACT. Three compounds, phenyl propenone, p-tolyl and bromo phenylpropenone derivatives 3a-c were produced in good yields via condensation of acetophenone with dimethyl formamide acetal (DMFDMA) presence xylene as a solvent. Compounds 5a-f by coupling the enaminones diazonium chloride 4a or 4b. reacted acetone to create novel disperse dyes 9a-f. Mass spectra, (FT-IR), elemental analysis, 1H-...

Bio-based materials and new dyeing technologies have gained growing interest, as companies actively want to enhance their products sustainability remove environmental hazardous pollutants. This article describes for the first time waterless studies using supercritical carbon dioxide (SC-CO2) a natural anthraquinone dye emodin polylactide (PLA) polyester (PET) fabric colouration. The colour of d...

In recent years, chitosan and its different derivatives have been extensively used in surface modification and functional finishing of textiles. In this study, wool yarns used in handmade carpet were treated with different concentrations of chitosan-poly (amidoamine) dendrimer hybrid (Ch-PAMAM) and characterized by scanning electron microscope (SEM), and their dyeing properties were investi...

In many guppy Poecilia reticulata farms in the vicinity of Bangkok, diseases have caused longlasting fish death and consequently large cumulative mortality. Diseased guppies were collected and subjected to histopathological analysis. The analysis revealed systemic granulomatosis as a remarkable histological sign. Rod-shaped bacterial cells with strong acid-fastness were found in the granulomas....

Indonesia is among the largest countries in global rice production. Annual generation of straw about 20 million tons were reported. It therefore, utilization as natural dye considered to minimize pollutant problem. Rice composed 48.7% carbon that generate black color. In this research, dyes ash applied cotton and rayon fabrics, followed by mordanting using lime, alum, ferrous sulphate. The colo...

Abstract The study tested the use of Viscobleach as a multi-scouring agent for pretreating cellulosic fabrics (cotton, viscose, and linen) instead using traditional agents (caustic soda, soda ash, hydrogen peroxide). results showed an increase in whiteness absorbency viscose linen pretreated with Viscobleach. color strength (K/S) increased all shades cotton medium dark linen. also that dye pick...

Natural dyes play an important role in sustainable dyeing processes. However, natural yellow with good performance are rare. Traditional have issues, such as a narrow color range and poor light fastness. In this paper, new dye was extracted from low-cost herb Geranium caespitosum L. (G. caespitosum). addition, the composition analyzed using UV-visible spectroscopy. The process of G. on wool fab...

Colored wastewater discharge into the water system would pose a severe threat to human health and aquatic life. It is critical enhance dye utilization reduce in textile industry. In this work, novel colored silica nanosphere was designed as pigment cotton fabrics could be recycled dyeing process. The worm-like hydrophilic porous (WHMS) nanospheres possess large specific surface area of 968.61 m...