http://nopr.niscpr.res.in/handle/123456789/32562 2026-10-10T20:53:32Z http://nopr.niscpr.res.in/handle/123456789/32654 Title: Influence of steam-relaxation treatment on characteristics of siro-spun acrylic yarns Authors: Tyagi, G K; Punj, S K Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Steam-relaxation treatment of siro-spun acrylic yarns results in a significant increase in breaking extension accompanied by a decrease in tenacity. The decrease in tenacity is more in yarns spun with shorter strand spacing and higher content of high-shrinkage fibres. Residual shrinkage is more in yarns spun with higher proportions of high-shrinkage fibres and it decreases with the increasing strand spacing.</span> Page(s): 98-101 1989-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/32653 Title: Interaction of non-ionic surfactants with some acid dyes Authors: Karmakar, S R; Patel, S G; Pandya, N R Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The binding of acid dyes to non-ionic surfactants has been studied spectrophotometrically employing Klotz's method and the binding equilibria by the conductance method. More than one mole of dye is bound by each mole of surfactant, indicating the existence of dye-surfactant micelles in addition to that of hydrophobic bonding responsible for binding. Measurements of critical micelle concentration and binding equilibrium indicate that association of the dye-surfactant complex can occur to produce large mixed micelles in solution.</span> Page(s): 93-97 1989-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/32652 Title: Stripping of cationic dyes from cationic dyeable polyester Authors: Rao, A L N; Desai, D I; Gandhi, R S Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Stripping of cationic dyes from cationic dyeable polyester has been studied by using different oxidizing and reducing agents. Sodium hypochlorite has been found to be an effective stripping agent, followed by sodium chlorite. Reducing agents have minimum effect on stripping.</span> Page(s): 89-92 1989-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/32651 Title: Effect of temperature and dye on foaming of sodium oleyl sulphate solutions Authors: Sarma, T S; Mehta, M V Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The foaming property of sodium oleyl sulphate in aqueous solution has been measured by the Ross and Miles method at different temperatures. The effect of the addition of a reactive dye (Procion Brilliant Blue MR) on foaming efficiency has also been studied. It has been found that increase in temperature increases the foaming efficiency whereas the addition of dye decreases it. The effect of dye has been attributed to the increase in surface tension of surfactant solutions in the presence of dye.</span> Page(s): 86-88 1989-06-01T00:00:00Z