Bleaching process of cotton fabric pdf
WebNov 7, 2024 · Hydroxyl radical is the main reactive species in hydrogen peroxide (H2O2) bleaching of cotton fabrics. Ultraviolet (UV) irradiation of the H2O2 bleaching system can efficiently produce hydroxyl radicals (HO·) under neutral or alkaline conditions, which were proven experimentally and theoretically by computational modeling. Various UV/H2O2 … Webis planned to optimize time and temperature of bleaching process, the bleaching process were carried out at different dwell time by varying temperature 100°C and 110°C and …
Bleaching process of cotton fabric pdf
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WebApr 22, 2024 · The process of giving denim special washed or vintage looks and color effects after stitching it into jeans or other garments. Different denim washing methods have been developed and used on various fabrics to produce a wide number of designs for fashionable denim garments and jeans over the last few decades. This study focused on … WebJun 5, 2024 · Bleaching is the removal of unwanted colour from the textile fibres and typically involves the use of one of the four main bleaching agents, namely sodium hypochlorite, calcium hypochlorite, sodium chlorite and hydrogen peroxide. Cotton must be properly prepared for dyeing, printing and finishing. To prepare the cotton fabric for …
WebNov 9, 2024 · The cotton pretreatment is followed by the sequence of processes, i.e., singeing, desizing, scouring, bleaching, bio-polishing, and mercerization processes. The process sequence is entirely dependent on the required fabric properties and end-use. Web10. Dry the fabric. B. Beam Bleaching 1. Wet-out fabric in surfactant solution (0.5% Basophen M, BASF) with a pad and dip system and wrap the fabric tightly on a …
WebFeb 28, 2024 · A fuzzy prediction model has been built based on hydrogen peroxide concentration, temperature and time of bleaching as the input variables and knitted fabric whiteness index as the output variable. The process parameters affecting the whiteness index of cotton knitted fabrics are very non-linear. Fuzzy inference system is a … WebJun 9, 2024 · This research involves the study of knitted cotton fabric bleaching using hydrogen peroxide generated enzymatically. Initially the bioscouring was performed using the enzymes cellulose (EC. 3.2.1.4), pectinase (EC. 4.2.2.2), and lipase (EC. 3.1.1.3) to remove impurities. Then bleaching was performed using hydrogen peroxide, which was …
WebFeb 15, 2013 · Fig. 2 shows the effect of the amount of hydrogen peroxide incorporated in the reaction medium on the percent loss in fabric weight (Fig. 2D) and whiteness index …
WebLockhande, H.T. and Wasif, A.I. (1991b) Environment-friendly and economical potassium permanganate bleaching process: Part II—Bleaching of polyester/cotton fabric. Indian Journal of Fibre and Textile Research, 16(3), 270–274. Google Scholar Maclaren, J.A. (1963) Studies in wool yellowing. pick up on spanishpick up on thisWebnatural dyes in the cotton. Single step or double step scouring and bleaching The continuous desizing, scouring and bleaching process allows to remove the size, to degrade the waxes and natural fats which are contained in the natural cotton (scouring or alkaline boiling), and to oxidize the chromophores molecules. Mezzera technology is tailored top alabama high schoolsWebBleaching and leveling residual waxes are also affected in this process. Hence a combined scouring bleaching process for cotton using peroxide in winch and package has … top alabama campgroundsWebHere, the process varies from one to another. In the past I have discussed about the process chart of wet processing for cotton fabric.The process sequence of wet processing for synthetic fabric. Process of Wet Processing for Synthetic Fabric (Printing Method): Grey fabric ↓ Stitching the fabric ↓ Washing ↓ Drying ↓ Stentering ↓ ... top alabama montgomery car insuranceWebThe invention discloses a special boiling-bleaching process for pure cotton knitted fabrics. The process includes steps: soaking in hot water, and performing fixed-frequency beating and microwave vibration treatment in cold water; performing heat insulation treatment in a mixed cleaning agent, and adding an appropriate amount of caustic soda … top alabama football players in the nflWebNov 10, 2010 · 12,756. Various wet processing techniques are used after weaving and knitting of fabrics such as Singing, Desizing, Scouring, Bleaching, Mercerizing etc. The wet processing is a term that involves … top alabama colleges