NOPR Collection:

Chemical bond formation in crosslinking reaction between jute fibre and dimethyloldihydroxyethylene urea

2016-07-20T05:46:07Z

Title: Chemical bond formation in crosslinking reaction between jute fibre and dimethyloldihydroxyethylene urea Authors: Som, N C; Mukherjee, A K Abstract: Jute fibre and fabric were crosslinked with dirnethyloldihydroxyethylene urea (DMDHEU) using different catalysts and the major components of jute fibre were isolated from the crosslinked jute fibre. The major components of the untreated jute fibre were also isolated and then crosslinked with DMDHEU. The nitrogen contents and infrared spectra of the various fractions indicate the formation of covalent bond between DMDHEU and jute fibre components, viz. holocellulose, ɑ-cellulose and lignin, due to crosslinking reaction. Page(s): 45-49

Effect of thickener film structure on dye release during sublimation transfer printing of polyester

2016-07-20T05:44:49Z

Title: Effect of thickener film structure on dye release during sublimation transfer printing of polyester Authors: Chavan, R B; Jain, A K Abstract: An attempt has been made to highlight the importance of the structure of the thickener film on dye release during sublimation transfer printing of polyester. Indalca AGBV when used alone as a printing thickener gave a continuous film in which the dye was embeded. This film acted as a barrier to the release of dye from paper, resulting in low dye transfer. The dye transfer, although low, was dependent on the dye particle size and the thickness of the wet film deposits. The incorporation of a suitable auxiliary in Indalca AGBV thickening disrupted the continuity of the thickener film and enhanced dye transfer. The dye particle size and film thickness of Indalca AGBV lost their significance in the presence of a suitable auxiliary in the print paste. Page(s): 39-44

Bleaching of polyester/cotton blended fabrics with a foamed composition

2016-07-20T05:43:19Z

Title: Bleaching of polyester/cotton blended fabrics with a foamed composition Authors: Venkatraj, R; Gulrajani, M L Abstract: A foamed sodium chlorite composition was applied onto a desized polyester/cotton blended fabric using vertical padding mangle for a combined scouring and bleaching process. The treatment time was varied from 9 to 68 s and the treatment temperature was varied from 90 to 130°C. The process parameters were optimized using Box and Behnken's response surface methodology. Page(s): 35-38

Phenomenon of warp breakage in weaving

2016-07-20T05:42:14Z

Title: Phenomenon of warp breakage in weaving Authors: Hari, P K; Aggarwal, S K; Subramanian, T A Abstract: The phenomenon of warp breakage due to tensile-cum-abrasive failure of yarn is largely influenced by the inter-fibre friction in yarn. Lea CSP has been found to be a reliable test method for assessing the weavability of yarns. Page(s): 31-34