Solvent texturing of partially oriented nylon-6 multifilament yarn

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:calibri;mso-bidi-theme-font:minor-latin;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Nylon-6 POY was solvent textured at room temperature in a chemomechanical process with the aid of phenol, acetic acid and formic acid. The properties and fine structure of solvent-textured nylon-6 POY were studied and compared with the properties of the base POY yarn as wellas with the conventional thermally draw-textured yarn. Yarns solvent-textured with phenol give highest bulk and crimp rigidity and lowest residual shrinkage. They also show high crystallinity but considerable loss in breaking tenacity. Acetic acid-textured sample shows significant shrinkage but unacceptable yarn properties. Formic acid shows results in between those obtained from acetic acid and phenol treatments. The extent of γ-form is reduced in all cases of solvent texturing; however, γ-form content of solvent-textured nylon-6 is found to be higher than that of thermal draw-textured nylon-6.</span>