International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

DSC Analysis of Partially Oriented (Poy) and Textured Poly (Ethylene Terephthalate) Yarns

Author Affiliations

  • 1 TÜBTAK-BUTAL Bursa Test and Analysis Laboratory, Bursa 16190-TURKIYE
  • 2 Dept. of Textile Engi. College of Engineering and Architecture University of Uludag Gorukle, Bursa TURKIYE

Res.J.chem.sci., Volume 1, Issue (9), Pages 57-66, December,18 (2011)


Thermal behavior of poly(ethylene trephthalate) PET partially oriented and texturing yarn has been investigated. Yarns were produced in three different levels of each of selected parameters during melt spinning and false twist texturing. Yarns were analyzed by differential scanning calorimeter (DSC).DSC is the most widely used equipment of thermal techniques. DSC analysis could easily detect the change of winding speed since winding speed alters the molecular orientation of the fiber. Quenching air temperature and quenching air speed effects could not be detected clearly by DSC analysis. Texturing yarns and flat yarns could be differentiating via DSC thermograms.


  1. Richardson M.J., Thermal analysis of polymers using quantitative differential scanning calorimetry, Polymer Testing,, 101-115 (1984)
  2. Forest M.J., Application to Thermoplastics and Rubbers, Principles and Applications of Thermal Analysis, P. Gabbott, Blackwell Publishing, 190-249 (2008)
  3. Haung J.M., Chu P.P. and Chang F.C., Conformational changes and molecular motion of poly(ethylene terepthalate) annealed above glass transition temperature, Polymer,41, 1741-1748 (2000)
  4. Kong Y. and Hay, J.N., The measurement of crystallinity of polymers by DSC, Polymer43, 3873-3878 (2002)
  5. Yildirim K., Ulcay Y., Kopmaz O., Forming Regression Based Mathematical Model to Predict PET POY Yarn Properties in Case of Changing Production Parameters, Textile Res. J.,80, 411-421 (2010)
  6. Kim S.L., Effect of spinning speed and quench air temperature on the characteristics of melt spun poly(ethylene terephthalate) yarn, Textile Res. J.,56, 697 (1986)
  7. Ozkan G. and Urkmez G., The effects of operating conditions on the product quality of partially oriented yarn, Polym. Plastics Technol. Eng.,43, 211-227 (2004)
  8. Kothari V.K., Progress in textiles: Science and technology, Textile Fibers: Developments and Innovations, IAFL publication, New Delhi, 36-237 (2000)
  9. Yildirim K., Altun S. and Ulcay Y., The effect of first heater temperature on the properties of false-twist textured poly (ethylene terapthalate) yarn, Tekstil ve Konfeksiyon,, 286 (2009)
  10. Ilbay I.I. and Celik N., A Statistical and experimental investigation on production design for copolymer based multichannel polyester draw textured yarns, Tekstil ve Konfeksiyon,, 291 (2009)
  11. Minakov A.A., Mordvintsev D.A. and Schick C., Melting and reorganization of poly(ethylene terephthalate) on fast heating (1000 K/s), Polymer,45, 3755-3763 (2004)
  12. Salomon A.W. and Fielder K.J., Practical use of differential calorimetry for plastics, Handbook of Plastics Analysis, H. Lobo and J. V. Bonilla, Marcel Dekker, New York, 79-109 (2003)
  13. Bair H.E., Glass transition measurement by DSC in assignment of the glass transition, ed. R.J. Seyler, ASTM STP, 1249 (1994)
  14. Ke B., Differential thermal analysis, Encyclopedia of Polymer Science and Technology, H. F. Mark and N. G. Gaylord, Wiley, New York, 37-65 (1968)
  15. Yildirim. K., Altun. S and Ulcay Y., Relationship between Yarn Properties and Process Parameters in False-Twist Textured Yarn, Journal of Engineered Fibers and Fabrics,4(2), 26-32 (2009)