NOPR Collection:

Aerodynamic Forces as Aids in Improving Fibre Lay on OE Rotor Surface

2016-07-20T05:15:37Z

Title: Aerodynamic Forces as Aids in Improving Fibre Lay on OE Rotor Surface Authors: Sharieff, I Abstract: Open end yarns are known to possess poor fibre orientation in terms of their fibre configuration. An attempt has been made to improve fibre lay on the rotor using an air stream at different flow rates, so as to Improve fibre configuration in yarns. The improvement in fibre parallelization achieved has, however a marginal effect on the yarn quality. Page(s): 27-28

Bundle Tenacity of Wool Fibres at Different Test Lengths

2016-07-20T05:11:57Z

Title: Bundle Tenacity of Wool Fibres at Different Test Lengths Authors: Iyer, K R Krishna; Ananthakrishnan, K V Abstract: The bundle tenacity of wool fibres has been determined at different gauge lengths (0, 0.5, 1,2 and 4 cm) for 10 varieties of wool. The bundle tenacity (S) and test length (L) are found to obey a logarithmic relationship of the form: S = A(L + 1)^B, where A is the intrinsic strength at nominal zero test length; and B, the degree of imperfection. The value of B is found to be a varietal characteristic unrelated to fibre length, fineness and strength at zero test length. Page(s): 24-26

Synthesis of Acid Dyes for Nylon

2016-07-20T05:08:13Z

Title: Synthesis of Acid Dyes for Nylon Authors: Tendolkar, M V; Sunthankar, S V Abstract: Acid dyes for nylon have been prepared from m-aminoanilinoacrylates and gamma-acid under acidic conditions. The dyeing properties of the resulting dyes have been studied. Page(s): 22-23

Synthesis of Silicon Coordinated Azo Dyes

2016-07-20T05:03:36Z

Title: Synthesis of Silicon Coordinated Azo Dyes Authors: Hawaldar, V S; Sunthankar, S V Abstract: Silicon coordinated dyes have been prepared by reacting silicon tetrachloride with dyes derived from pyrazolone and acetoacetanilide in toluene in the presence of triethylamine. The silicon coordinated azo dyes are stable to water, hydrochloric acid (10%) and sodium hydroxide (10%) even on boiling. However, in dioxane, the complexes decompose when boiled with acid and alkali to give the parent dyes. Page(s): 20-21