NOPR Collection:

Some innovations in UV protective clothing

2000-12-01T00:00:00Z

Title: Some innovations in UV protective clothing Authors: Bajaj, P; Kothari, V K; Ghosh, S B Abstract: With the increasing awareness of dangers posed to human health by overexposure to solar radiation and, in particular, ultraviolet components of radiation, due to the depletion of the ozone layer, efforts have been made to provide sun protective clothing while permitting outdoor activities. The degree of protection offered by such clothing depends on a number of factors. III this paper, an attempt has been made to coalesce the ideas of the various researchers who have developed ultraviolet protective clothing, and to understand the influence of UV rays on the structure and morphology of fibres , fabrics and fabric assemblies. The effects of humidity, chemical processing. dyeing with reactive/direct/vat dyes on cellulosics and their blends, and finishing chemicals on sun protection factor have also been highlighted. Page(s): 315-329

Chemical modification of jute carpet pile yarns with DMDHEU to improve serviceability of jute carpet

2000-12-01T00:00:00Z

Title: Chemical modification of jute carpet pile yarns with DMDHEU to improve serviceability of jute carpet Authors: Rahman, S M Badier; Amin, M N; Mian, M A Jabbar; Baksh, M T Abstract: Jute carpet pile yarns were treated with DMDHEU (45% solid content) using magnesium chloride as catalyst. Thickness recovery, compression recovery, work of recovery, tuft withdrawal force and moisture content of the treated carpet samples were studied and compared with those of the untreated carpet of the same pile height. The results show improvements in the performance characteristics of the crosslinked jute carpets. Page(s): 312-314

Optimization of draw frame setting based on cotton single fibre length data

2000-12-01T00:00:00Z

Title: Optimization of draw frame setting based on cotton single fibre length data Authors: Basu, Arindam; Ramakrishnan, N Abstract: A new method, based on single fibre length data, has been proposed to optimize the roller settings in draw frame. Yarns produced using the settings based on the new method have lower Classimat faults as compared to those produced using the conventional settings. The observed phenomenon is explained in terms of fibre arrangement in sliver. Page(s): 309-311

Colour matching on wool using natural and synthetic dyes

2000-12-01T00:00:00Z

Title: Colour matching on wool using natural and synthetic dyes Authors: Shukla, S R; Patil, Swati M Abstract: Wool fabric samples were dyed using natural dyes and mordants singly and in their binary mixtures. Computer colour matching system was used to evaluate these dyeings and generate matching dyeing recipes for synthetic trichromatic acid dyes which are ecofriendly. After dyeing with acid dyes, the natural dyed and acid dyed samples were evaluated for colour differences and it has been observed that in almost all cases, good matchings are observed for the natural dyed wool samples. This indicates that selective classes of synthetic dyes, which exhaust to higher levels and have proven non-toxicity, could be used with due concern to ecology and economy. Page(s): 303-308