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Rajib Bhattacharyya

    Rajib Bhattacharyya

    Poor colour fastness in textile products is one of the major sources of customer dissatisfaction and leads to fading or bleeding of textile colour by various type of external influences like water, perspiration, rubbing etc., during... more
    Poor colour fastness in textile products is one of the major sources of customer dissatisfaction and leads to fading or bleeding of textile colour by various type of external influences like water, perspiration, rubbing etc., during textile manufacturing and in daily use. Moreover, poor colour fastness may also prove hazardous due to the bleeding and subsequent penetration of the dye molecules and metal ions into the human skin. This article has tried to find a solution to mitigate the poor colour fastness to perspiration particularly for dark shade on silk fabrics. This paper shows a comparative analysis of different type of fastness properties of natural silk fabrics and their strength loss while dyeing with reactive and metal complex dyes following different national and international standards like ISO, ASTM standards etc. In this study, it has been revealed that colour fastness to perspiration of reactive dyed silk fabric against all types of fibres is comparatively better than...
    Silk fabrics emerge in a wide spectrum of popular products like silk satin, silk crepe de chine, silk georgette, silk chiffon, silk taffeta, silk scarves etc. Silk being a natural and delicate fibre demands certain caring treatments... more
    Silk fabrics emerge in a wide spectrum of popular products like silk satin, silk crepe de chine, silk georgette, silk chiffon, silk taffeta, silk scarves etc. Silk being a natural and delicate fibre demands certain caring treatments during its use in textiles, apparels in particular. Silk apparels and textiles, like the other textile products, get soiled due to repeated use. These products need to be refurbished for reuse without substantively altering their functional and aesthetic properties. National and international organizations coordinate their efforts to establish objective test methods for care label instructions. Correct care of silk products ensures retaining their quality for years. Care labels in apparels provide a useful information to the end users to look after their textile products made from different fibres. These labels are basically simple, space-saving, comprehensive pictorial symbols reducing the dependence on language and guiding the consumers to clean and ma...
    Reduction of carbon foot print in constructions is currently attracting global attention warranting innovations in construction technology with stress on eco-congruity. The relentless use of by-products of fossil fuel and mining of stones... more
    Reduction of carbon foot print in constructions is currently attracting global attention warranting innovations in construction technology with stress on eco-congruity. The relentless use of by-products of fossil fuel and mining of stones in road construction has led to gradual shift from conventional materials in road construction to innovative less polluting construction ingredients. Natural fibres are gradually emerging as essential ingredients of various types of Geotextiles. Development of Jute Geotextiles (JGT) is a pointer in this direction. Besides its effectiveness in carbon sequestration and eco-compatibility from cradle-to-grave, diverse applications of JGT are being conceptualized with thrust on R & D meeting most of the technical requirements needed for the major geo-technical applications. This paper delineates physical characteristics of Jute fibre and some of the innovative R & D exercises on JGT executed so far in connection with carbon foot print reduction in civil...
    Poor colour fastness in textile products is one of the major sources of customer dissatisfaction and leads to fading or bleeding of textile colour by various type of external influences like water, perspiration, rubbing etc., during... more
    Poor colour fastness in textile products is one of the major sources of customer dissatisfaction and leads to fading or bleeding of textile colour by various type of external influences like water, perspiration, rubbing etc., during textile manufacturing and in daily use. Moreover, poor colour fastness may also prove hazardous due to the bleeding and subsequent penetration of the dye molecules and metal ions into the human skin. This article has tried to find a solution to mitigate the poor colour fastness to perspiration particularly for dark shade on silk fabrics. This paper shows a comparative analysis of different type of fastness properties of natural silk fabrics and their strength loss while dyeing with reactive and metal complex dyes following different national and international standards like ISO, ASTM standards etc. In this study, it has been revealed that colour fastness to perspiration of reactive dyed silk fabric against all types of fibres is comparatively better than...
    Reduction of carbon foot print in constructions is currently attracting global attention warranting innovations in construction technology with stress on eco-congruity. The relentless use of by-products of fossil fuel and mining of stones... more
    Reduction of carbon foot print in constructions is currently attracting global attention warranting innovations in construction technology with stress on eco-congruity. The relentless use of by-products of fossil fuel and mining of stones in road construction has led to gradual shift from conventional materials in road construction to innovative less polluting construction ingredients. Natural fibres are gradually emerging as essential ingredients of various types of Geotextiles. Development of Jute Geotextiles (JGT) is a pointer in this direction. Besides its effectiveness in carbon sequestration and eco-compatibility from cradle-to-grave, diverse applications of JGT are being conceptualized with thrust on R & D meeting most of the technical requirements needed for the major geotechnical applications. This paper delineates physical characteristics of Jute fibre and some of the innovative R & D exercises on JGT executed so far in connection with carbon foot print reduction in civil ...
    Materials based on natural fibres are now becoming increasingly popular as thermal insulating material. Due to its low mass, density and cell structure, they show fairly good thermal insulation properties, often better and more... more
    Materials based on natural fibres are now becoming increasingly popular as thermal insulating material. Due to its low mass, density and cell structure, they show fairly good thermal insulation properties, often better and more advantageous than synthetic fibres. A great benefit of the insulation property based on natural fibres is not only a low value of thermal conductivity but also the natural character of these fibres. This paper delineatesto develop different blends of fibres comprising of jute and other fibres like recycled polyester (PET) and low melt bi-component fibres (PET) to produce needle punched nonwoven fabrics for using as thermal insulating material and to assess and compare the different functional properties of the developed nonwoven fabric samples for their suitability as thermal insulating material.
    Geotextiles are mainly made of man-made fibresbut since the last two decades natural fibre made geotextilelike jute geotextile have been found to b e effective in improving geotechnical characteristi cs of soil and are being extensively... more
    Geotextiles are mainly made of man-made fibresbut since the last two decades natural fibre made geotextilelike jute geotextile have been found to b e effective in improving geotechnical characteristi cs of soil and are being extensively used for various technical end-us es like erosion control, management of slopes, stre ngthening of roads, stabilization of embankments, protection of river banks, consolidation of soft soil, etc. The b ackdrop of growing global concern for environment concomitant with the alarming danger of carbon foot-print generation am algamated with non-biodegradability and higher toxicity gener ation from the use of synthetic fibres have created an urge to come back to natural fibres, thereby opening new market opportunities.Jute Geotextiles (JGT), apart from it s advantages of being eco-compatible and techno-economically viable, have proven to be among the most versatile and co st effective ground modification materials which play a signific ant part in modern ...
    This paper delineates to carry out a detailed investigation of the effect of variation of pick density on the physical, mechanical and hydraulic properties of three categories of jute fabric samples woven from single weft yarns, plied... more
    This paper delineates to carry out a detailed investigation of the effect of variation of pick density on the physical, mechanical and hydraulic properties of three categories of jute fabric samples woven from single weft yarns, plied weft yarns and weft yarns running parallel in the fabric. The constituent weft yarns are varied in their counts, keeping fabric weight, warp count and warp yarn density unaltered in all the three categories of the woven fabric samples. Altogether seven number of fabric samples have been prepared in multi-phase, curvilinear and shuttleless S4A loom. The physical, mechanical and hydraulic properties of all these produced fabric samples have been determined and the effect of variation of pick density on these properties have been observed.
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