The properties of false-twist textured yarns in the aspects of crimp characteristic and tensile behavior depend mainly on the draw ratio and the D/Y ratio. This study comprises investigations of the effect of D/Y ratio and draw ratio on the crimp and tensile properties and percent crystallinity. While there was no noticeable change on the percent crystallinity by altering these parameters, tenacity increased and crimp contraction decreased with increasing draw ratio, and crimp stability decreased when the D/Y ratio increased. K/S value also decreased with increasing draw ratio.
ThwaitesJ.J.; the Mechanics of Friction-Twisting Reassessed, Part II: Tension and Torque Generation in the Disc Spindle; J. Text. Inst.1985, 3, 157–170.
SalamonA.W.; FielderK.J.; Practical Use of Differential Calorimetry for Plastics; In Handbook of Plastics Analysis, LoboH.; BonillaJ.V., Eds.; Marcel Dekker: New York, 2003, pp. 79–109.
6.
GhoshS.; WolharJ.; the Influence of Some Machine-Setting Variables on the Properties of Yarns in the Friction-Twist-Draw-Texturing Process; Textile Res. J.1981, 6, 373–383.
7.
GuptaV.B.; GuptaD.B.; MittalS.C.; the Mechanical Properties of Textured Polyethylene Terepthalate Yarn; Textile Res. J.1978, 8, 446–453.
8.
DuG.W., and HearlW.S.; Mechanics of Friction Twisting, Part I: Yarn Path, Tension, and Torgue Generation in a Single Disc; Textile Res. J.1991, 6, 347–357.
9.
GuptaV.B.; AmirtharaJ.; The Effect of Tension and Twist on the Structure and Dyeability of Textured Polyethlene Terepthalate Yarn; Textile Res. J.1976, 11, 785–790.
10.
SasakiT.; KurodaK.; SuminokuraT.; Twist Distribution in False-Twist Texturing Process; J. Textile Mach. Soc. Japan, Trans.1970, 23, 77.
SichinaW.J.; DSC as Problem Solving Tool: Measurement of Percent Crystallinity of Thermoplastics, Perkin Elmer Instruments, and PETech40.
13.
SchultzJ.M.; Thermomechanical Processing: Structure and Properties in Structure Formation; InPolymeric Fibers; SalemD.R., Ed.; Carl Hanser Verlag: Munich, 2001, pp. 425–454.
