Studies on Chemically Modified Cotton Fabrics: Part III-Chemical Properties of DMEU Stripped Hydrocellulose and Hypochlorite Oxycellulose

1-6<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";color:black;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Two chemically modified cotton fabrics, viz. (1) hydrocellulose and (2) hypochlorite oxycellulose of degrees of polymerization (DPn) varying from 2300 to 350 were subjected to (i) catalyst treatment using 20 g<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";="" color:#0f0f0f;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:="" ar-sa"="">/litre MgCl26H2O, (ii) DMEU finishing, (iii) urea-phosphoric acid (UPac) hydrolysis, and (iv) DMEU stripping. Evaluation of changes in functional groups and DPn has shown that catalyst treatment and UPac hydrolysis do not alter either the DPn or the contents of various functional groups of the two chemically modified fabrics. DMEU finishing introduces DMEU crosslinks. DMEU stripping by UPac hydrolysis causes a slight increase in DPn values<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";color:#0f0f0f;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">, but there is no change in the contents of functional groups of hydrocellulose. Similar treatment of hypochlorite oxycellulose causes reduction in DPn values and significant increase in aldehyde and carboxyl group contents.