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Isothermal crystallization behavior of polyoxymethylene with and without nucleating agents
Author(s) -
Xu Weibing,
He Pingsheng
Publication year - 2001
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 - 10.1002/1097-4628(20010411)80:2<304::aid-app1100>3.0.co;2-n
Subject(s) - polyoxymethylene , crystallization , nucleation , materials science , differential scanning calorimetry , isothermal process , optical microscope , chemical engineering , polarized light microscopy , kinetics , polymer chemistry , composite material , scanning electron microscope , thermodynamics , chemistry , organic chemistry , polymer , optics , physics , engineering , quantum mechanics
Nucleation effects of two silicate nucleating agents, attapulgite and diatomite, on the crystallization of polyoxymethylene (POM), were studied by means of differential scanning calorimetry and polarized optical microscopy. The crystallization kinetics of POM with and without nucleating agents was analyzed by means of two isothermal crystallization kinetic equations through the crystallization thermograms. Compared with virgin POM, POM with nucleating agents of attapulgite and diatomite decreased the spherulitic size of POM and interfacial free energies per unit area perpendicular σ e . The crystallization growth rate was accelerated because of nucleating agents as well. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 304–310, 2001