This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Aneja, A. P. Search for Related Content Social Bookmarking                         What's this?

Circumferential Superdrawing of Hollow Poly(ethylene Terephthalate) Filaments

E. I. du Pont de Nemours & Company, Kinston, North Carolina 28501, U.S.A.

Amorphous poly(ethylene terephthalate) (PET) can be stretched at low tension without causing any observable crystallization at temperatures above T_g. This resultant increased length with no measurable change in orientation is called superdrawing. Superdrawing of hollow PET fibers in the circumferential direction is demonstrated in a hot water bath accompanied by increased fiber void, which is caused by a combination of air expansion and water permeation. A three-parameter model defines the kinetics of the process. The phenomenon is characterized by a rapid rise in the fiber void with a subsequent steady state. The model parameters are obtained by a simple geometric technique. The initial fiber characteristics and morphology determine the rate of void increase and the final fiber geometry. Intrinsic fiber variability is reflected in the water permeability and energy of activation. The model predicts the total residence time required in the water bath to obtain maximum void size during the superdrawing process.

Textile Research Journal, Vol. 74, No. 4, 365-372 (2004)
DOI: 10.1177/004051750407400414


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?