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The influence of annealing on the thermal properties of poly(ethylene terephthalate) fibers II. The thermal volume expansivity of annealed pet fibers
Author(s) -
Urbanczyk G. W.,
Michalak G.
Publication year - 1986
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1986.070320502
Subject(s) - annealing (glass) , materials science , thermal , poly ethylene , ethylene , composite material , atmospheric temperature range , volume (thermodynamics) , synthetic fiber , polymer chemistry , thermodynamics , chemistry , fiber , organic chemistry , physics , catalysis
The influence of annealing of PET fibers on their thermal volume expansivity has been examined. The annealing has been performed in air in the loose state of the fibers within the temperature range 130–210°C for 2,5,10, and 30 min. The established volume expansivity coefficients α 25 give rise to the conclusion that three temperature intervals of annealing may be distinguished. The ascertained variation in α 25 has been discussed on the basis of established morphological and fine structure changes caused in the fibers by the applied annealing.