NOPR Collection:

Effect of soap solution on macromolecular parameters of silk fibre using small-angle X-ray scattering technique

Wed, 01 Jun 1994 00:00:00 GMT

Title: Effect of soap solution on macromolecular parameters of silk fibre using small-angle X-ray scattering technique Authors: Misra, T; Panda, P; Patel, T; Khuntia, S; Bhat, N V Abstract: The effect of soap solution on the macromolecular parameters of mulberry silk fibre have been studied using the small-angle X-ray scattering (SAXS) technique. Applying the theories of Vonk and Ruland, it is observed that the system comes under non-ideal two phase system characterized by the continuous variation of electron density at the' phase boundary. The increase in the value of average periodicity transverse to the layer on boiling the silk fibre in soap solution at 9Sec is not significant. This indicates that the fibre is not much affected by the soap solution. Page(s): 99-101

Improvement in hysteresis behaviour of jute and mesta fibres by treatment with fungal enzymes

Wed, 01 Jun 1994 00:00:00 GMT

Title: Improvement in hysteresis behaviour of jute and mesta fibres by treatment with fungal enzymes Authors: Dutta, Ajoy Kumar; Ghosh, B L Abstract: The hysteresis behaviour of enzyme-treated jute and mesta fibres has been studied and it is observed that when these fibres are treated with a combination of cellulase, hemicellulase and pectinase enzymes (7:3:2 units/g of fibre), the moisture retention capacity is increased which, in turn, improves the spinnability of these fibres. Page(s): 97-98

Development of microporous hydrophilic acrylic fibre

Wed, 01 Jun 1994 00:00:00 GMT

Title: Development of microporous hydrophilic acrylic fibre Authors: Bajaj, Pushpa; Dara, M S Abstract: A hydrophilic acrylic fibre containing acrylonitrile terpolymer (acrylonitrile/methyl acrylate/sodium salt of 2-acrylamido-2-methylpropane-sulphonic acid) and small amount of cellulose derivative has been developed by conjugate spinning. This fibre has a rnicroporous structure that renders it highly water retentive with excellent drying and heat insulation properties. It has all the positive attributes of acrylic coupled with water imbibition properties of cotton. A comparison of hydrophilic acrylic fibre towel with cotton towel has also been made. Page(s): 95-96

Syntheses of bistriazinylaminostilbene derivatives and their application on cotton and nylon fibres as fluorescent brighteners

Wed, 01 Jun 1994 00:00:00 GMT

Title: Syntheses of bistriazinylaminostilbene derivatives and their application on cotton and nylon fibres as fluorescent brighteners Authors: Modi, B R; Mistry, N V; Shah, M J; Desai, K R Abstract: Forty fluorescent brighteners, 4,4' -bis[(4-p-fluoroanilino/azido-6-arylureidol arylthioureido-s-triazin-2-yI)aminolstilbene-2,2 -disulphonic acids (V 1-40) have been prepared by condensing 4,4 '-diaminostilbene 2,2 -disulphonic acid (I) with two mol of cyanuric chloride (II) followed by reaction with two mol of p-fluoroaniline/sodium azide and then condensation with two mol of arylurea/arylthiourea derivatives. The absorption characteristics and fastness properties of these compounds on cotton and nylon fibres have also been evaluated. All the compounds show moderate to good fastness to light, washing, perspiration and chlorine on cotton whereas poor to very good fastness to light, washing, perspiration and chlorine on nylon. These compounds also show poor to good sublimation fastness on these fibres and are stable to reducing agents. Page(s): 89-94