Study of the Crystallization of an Aromatic Poly-ether-ketone (PK99) by Calorimetric and X-ray Analysis |
| |
Authors: | Torre L Kenny J M Recca A Siracusa V Tarzia A Maffezzoli A |
| |
Institution: | (1) Istituto di Tecnologie Chimiche, Universitŕ di Perugia, Terni, Italy;(2) Istituto Chimico, Facoltŕ di Ingegneria, Universitŕ di Catania, Italy;(3) Dipartimento di Ingegneria dell'Innovazione, Universitŕ di Lecce, Via Arnesano, 73100, Italy |
| |
Abstract: | An analysis of the crystallization behaviour of a new poly(aryl-ether-ether-ketone-ketone), PK99, by differential scanning
calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) is presented. Isothermal crystallization TG were obtained in the
whole range between the glass transition temperature (T
g) and the melting temperature (T
m) as a consequence of the slow crystallization kinetics stemming from the closeness of these transitions. The calorimetric
results, compared with WAXD data, were applied to determine the theoretical melting temperature and crystallization enthalpy.
The DSC and WAXD data were combined in order to calculate the total amount of the crystallizable fraction of the polymer,
and a model was proposed to explain the difference between the fractions of crystallinity observed with these techniques.
The thermal and X-ray data were also correlated with different lamellar morphologies arising from the crystallization conditions.
Finally, DSC experiments on the crystallized sample were used to detect the presence of a rigid amorphous phase which does
not relax at T
g.
This revised version was published online in July 2006 with corrections to the Cover Date. |
| |
Keywords: | crystallization DSC PK99 rigid amorphous fraction WAXD |
本文献已被 SpringerLink 等数据库收录! |
|