NOPR Collection:

Contribution of textiles to medical and healthcare products and developing innovative medical devices

2016-07-20T05:48:40Z

Title: Contribution of textiles to medical and healthcare products and developing innovative medical devices Authors: Rajendran, S; Anand, S C Abstract: The application of medical textiles used in woundcare nursing, implants, and healthcare and hygiene products has been discussed. The production and properties of biodegradable polysaccharide fibres obtained from natural sources, such as alginate, chitin/chitosan, collagen, catgut and branan ferulate, have been highlighted. Speciality medical polymeric fibres used for producing wound dressings, bandages and textile scaffolds for tissue culture have been presented. In addition, the difficulties encountered by elderly people due to venous leg ulcers and a specific research and development programme carried out at the University of Bolton in developing novel padding and compression bandages for the treatment of venous leg ulcers have also been critically discussed. It is observed that the developed padding bandages meet most of the criteria required for ideal bandages and have excellent pressure distribution property around the limb over the existing commercial padding bandages. The pressure profiling of the novel padding bandages in two-layer, three-layer and four-layer systems has been studied. Page(s): 215-229

Polymer/clay nanocomposite based coatings for enhanced gas barrier property

2016-07-20T05:47:50Z

Title: Polymer/clay nanocomposite based coatings for enhanced gas barrier property Authors: Joshi, Mangala; Banerjee, Kushan; Prasanth, R; Thakare, Vikas Abstract: This paper aims at exploring the revolutionary field of nanotechnology and some of its promising aspects in the innovative field of polymeric nanocomposites because they show substantially improved physical properties as compared to neat polymers. The polymer layered silicate nanocomposites are an important class of hybrid organic-inorganic materials with improved mechanical, thermal and thermomechanical properties. They also show superior UV and chemical resistance and are widely being investigated for improving the gas barrier and flame retardant properties. The common synthesis techniques to produce polymeric layered silicate nanocomposites and their feasibility as coatings for textiles to improve the property mix have been discussed along with the improved properties of these materials. Polymer nanocomposite based coatings for enhanced gas barrier properties have also been reviewed. A feasibility study on polyurethane /clay nanocomposite based coating for inflatable has been done and it is found that the polyurethane /clay nanocomposite based coated fabric shows an encouraging result on improving the gas barrier property for inflatables. Page(s): 202-214

Nano finishes

2016-07-20T05:45:44Z

Title: Nano finishes Authors: Gulrajani, M L Abstract: Techno-science of some recently introduced nano finishes for textile substrates has been reviewed. The logic of using low molecular weight fibre-reactive fluorocarbons that form the basis of Nano-Care™ finish to impart durable hydrophobicoleophobic characteristics to fabrics, as described in a patented literature, has been discussed. Super hydrophobicity as exhibited by lotus leaves and the finishes to get self-cleaning textile fabrics based on the Lotus Effect™ have been covered giving some typical recipes. Mechanisms proposed to explain the photo-catalytic self-cleaning effect of TiO₂ have been described. Developments in the production and evaluation of nano silver and wound care devices based on antimicrobial activity of silver have been covered in detail . Page(s): 187-201

Thermo-physiological comfort characteristics and blended yarn woven fabrics

2013-12-06T16:42:40Z

Title: Thermo-physiological comfort characteristics and blended yarn woven fabrics Authors: Kothari, V K Abstract: Clothing protects from cold or heat to maintain body thermal comfort throughout the full range of human activities. Various types of tactile, moisture and thermal interactions between the clothing material and the human skin determine the comfort level of a person at a given environmental condition while engaged in a specific level of activity. The fabric type and its blend composition, the tactile and thermal insulation behaviour or the fabric assembly and the moisture management capabilities of the clothing can affect the comfort. This paper discusses the role of fibre properties on comfort characteristics of fabrics and why the blending of fibres at yarn manufacturing stage can lead to fabrics having the desired characteristics from comfort point of view. The details about the properties of different fibres and their relationship to different comfort attributes have also been provided. The results of experimental study of water vapour permeability conduct of polyester/viscose (P/V) and polyester/cotton (P/C) blended yarn fabrics show that the higher polyester content in P/V and P/C fabrics is detrimental to water vapour transmission. The water vapour transmission rate also increases with the air flow rate above the fabric. Page(s): 177-186