Purpose This paper aims to evaluate the effects of banana (Musa) peel and guava (Psidium guajava) leaves extract as mordants on jute–cotton union fabrics dyed with onion skin extract as a natural dye. Design/methodology/approach The dye was extracted from the outer skin of onions by boiling in water and later concentrated. The bio-mordants were prepared by maceration using methanol and ethanol. The fabrics were pre-mordanted, simultaneously mordanted and post-mordanted with various concentrations according to the weight of the fabric. The dyed and mordanted fabrics were later subjected to measurement of color coordinates, color strength and colorfastness to the washing test. Furthermore, the dyed samples were characterized by Fourier transform infrared, and different chemical bonds were analyzed by X-ray photoelectron spectroscopy analysis. Findings Significant improvement was obtained in colorfastness and color strength values in various instances using banana peel and guava leaves as bio mordants. Post-mordanted with banana peel provided the best results for wash fastness. Better color strength was achieved by fabric post-mordanted with guava leave extracts. Originality/value Sustainable dyeing methods of natural dyes using banana peel and guava leaves as bio mordants were explored on jute–cotton union fabrics. Improvement in colorfastness and color strength for various instances was observed. Thus, this paper provides a promising alternative to metallic salt mordants.
Purpose In recent years, natural dyes have attracted significant attention globally because of growing public awareness of the environment and health hazards associated with synthetic dyes. Natural dyes can provide special aesthetic qualities as well as the ethical significance of a product which is environmentally friendly. By keeping this burning issue in mind, this study aims to explore the dyeing properties of various unexplored environmentally friendly natural dyes. Design/methodology/approach In this study, the aqueous extract of coconut leaves is used for dyeing purpose. The silk and jute fabrics were dyed with the extract alone as well as in combination with metal salts as mordants by employing pre-, meta- and postmordanting techniques. The dyeing properties of the colored samples were evaluated by measuring their color strength; CIEL*a*b* values; and color fastness to washing, light and rubbing. Findings A yellow shade was achieved when the fabric samples were dyed solely with the extract. However, shade variations were observed when different mordants and mordanting techniques were applied. In all the cases, metallic salts improved the color fastness properties of dyed samples to washing, light and rubbing especially for the silk fabric. Originality/value To the best of the authors’ knowledge, this is the first report on a natural dye extracted from the leaves of coconut. Leaf as the source of dye has added an extra advantage, as it is reproducible and can be collected easily without harming the plants. The reported dye could be an attractive choice for sustainable and eco-friendly dyeing.
Cigarette butts are one of the most discarded and littered items in the world, with a total amount of around 5.6 trillion, posing a grave threat to the environment and human health. This research seeks to recover cellulose acetate fibers from used cigarette filters and to evaluate the yarn-making capabilities of these fibers. The cigarette butts were gathered from various locations, and the fibers and coating were separated. The fibers were then treated with hydrogen peroxide and sodium hydroxide to eliminate the burned color and odor. Acetone and distilled water were used to filter and distill the material properly. The color coordinates of the chemically altered fibers, including reflectance value and color strength, were measured afterward. To assess the chemical, thermal, physical, morphological, and mechanical characteristics of the modified cigarette butt filter fiber, atomic absorption spectroscopy, Fourier transform infrared spectrometer (FTIR), thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and tensile properties were examined. Significant and appealing findings were obtained for the mechanical parameters, particularly the tensile strength of 1.2 gm/den for a single fiber, the fiber density of 1.2 dtex, and the effective length of 25 mm, all of which indicate the fiber’s suitability for yarn production. In addition, FTIR, thermogravimetric analysis, and X-ray diffraction measurements revealed that the cigarette butt filter fiber possessed the same characteristics as commercial cellulose acetate fiber. The preliminary results obtained on the recovered cellulose acetate fiber are encouraging for the application of this recovery material from cigarette butts to create a high-demand and value-added product, such as yarn for garment production.
Composites with regenerated fiber bonded with natural fibers have attracted growing attention as the globe becomes more sustainable, ecofriendly, and environment-friendly. Pineapple leaf fiber is used for composite in this study since it is also handled as waste nowadays. Furthermore, viscose was chosen as a study variant since no one had ever tried a pineapple and viscose mixed composite before. Due to a scarcity of natural fiber production on Earth, regenerated cellulosic fiber reinforced with natural fiber is widely employed, providing a nearly identical experience by employing partial or less natural fiber. This paper describes a study that used pineapple leaf fiber mixed with a viscose composite and reinforced with epoxy resin. Pineapple viscose blended composite is composed of 1/1 plain wave design, and epoxy resin is applied on them to make stability by the compression molding process. The tested Tensile Strength (σ), Young’s Modulus, and Eb% are 20.7 Mpa, 579 Mpa, and 9.4%, respectively. Some testing is also carried out to differentiate the properties like bending strength 23.5 Mpa, bending modulus 717.6 Mpa, and avg. The pH of the composite is 9.54. This article has different analytical parts to acknowledge the actual condition of composite behaviors. Finally, some suggestions are made as to where it may be utilized and where appropriate to use it, such as on building sites, in Geotextile materials, Coffee cups, coffee cans, and agro-textile materials.
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