NISCAIR Online Periodicals Repository Community: Indian Journal of Fibre & Textile Research (IJFTR)

Characterization of Egyptian cotton fibres

Title: Characterization of Egyptian cotton fibres

Authors: Messiry, Magdi El; Abd-Ellatif, Samar Ahmed Mohsen

Abstract: In this work, the quality of Egyptian cotton varieties has been studied in terms of a morphological investigation, single fibres tensile properties and other tuft properties determined by HVI. Finally, a new ‘modified fibre quality index (MFQI)’ for the characterization of the quality is presented and compared with the spinning consistency index. This index in most cases gives the real potential of the cotton variety according to its physical properties.

Page(s): 109-113

Use of novel synthesized aqueous binders for pigment printing of polyester fabrics

Title: Use of novel synthesized aqueous binders for pigment printing of polyester fabrics

Authors: El-Molla, M M; Haggag, K; El-Shall, F N; Shaker, N O; Alian, N A

Abstract: A variety of new synthesized polyurethane acrylate polymers has been used as textile binder in the pigment printing for screen printing of polyester fabrics and for pigment fixation through polymerization process for binders by using thermo fixation as well as radiation curing (UV and microwave) fixation modes. The effects of change in temperature of thermo fixation and the time of curing in both UV and microwave with the concentration of prepared binders in printing paste on the color strength, and prints fastness properties are studied. The newly synthesized polyurethane acrylate binders could be successfully used for pigment printing of polyester fabrics using three fixation modes and, in general, their pints possess color strength value comparable or even higher to those obtained upon using selected commercial binder.

Page(s): 57-65

Effect of sonication on bioscouring of organic cotton through mixed enzymatic system – Neural network approach

Title: Effect of sonication on bioscouring of organic cotton through mixed enzymatic system – Neural network approach

Authors: Vigneswaran, C; Ananthasubramanian, M; Anbumani, N

Abstract: An attempt has been made to use the enzyme technology for bioscouring of organic cotton textiles using sonication techniques to improve the enzyme activity and scouring performance. The process optimization of bioscouring of 100% organic cotton fabric with ultrasonic treatment have been done with selective specific mixed enzymatic system using the enzymes such as alkaline pectinase, protease, lipase and cellulase. The process variables such as enzyme concentration, temperature and reaction time are optimized to achieve the required water absorbency and pectin removal during bioscouring process by pectinolytic and proteolytic activity on the organic cotton fabrics. These process variables are selected based on the artificial neural network using MATLAB 7.0 software with and without ultrasonic effect and the output results in fabric physical properties such as fabric weight loss, water absorbency, wetting area, whiteness index, yellowness index, and brightness index. The best optimum bioscouring for organic cotton is achieved in terms of water absorbency (0.856s), whiteness index (54.36%), yellowness index (14.02) and brightness index (69.35%) using 8% alkaline pectinase, 3% protease, 0.8% lipase, 0.8% cellulase mixed enzyme, 55°C temperature, 60 min reaction time and 9.5 pH with 1.0% desirability.

Page(s): 44-56

Improvement in properties of cotton fabric through synthesized nano-chitosan application

Title: Improvement in properties of cotton fabric through synthesized nano-chitosan application

Authors: Chattopadhyay, Debapriya; Inamdar, M S

Abstract: In this paper, the study on synthesis, characterization and application of nano-chitosan on cotton fabric has been reported. The nano-chitosan treated fabrics are then tested for appearance, tensile, absorbency, stiffness, dyeing behaviour, wrinkle recovery and antibacterial properties. Low molecular weight chitosans are prepared by nitrous acid hydrolysis method; the molecular weights are determined viscometrically. Nano-chitosans are synthesized by ionic gelation of pentasodium tripolyphosphate and chitosan, and then characterized by particle size determination. The fabric samples are pretreated with normal and nano-chitosan solutions by pad-dry-cure technique. The surface morphology of treated cotton fabric has been studied by SEM analysis. The treated fabrics have also been dyed and their whiteness, yellowness and brightness indices are evaluated. It is found that the particle size and polydispersity of chitosan in solution are affected by the variation in molecular weight. The dye uptake and wash fastness of nano-chitosan treated fabrics are found to be improved. An enhanced antibacterial property is observed with the reduction of nano-chitosan particles and when coupled with nano silver colloid.

Page(s): 14-21