Isotactic Poly-Propylene samples, previously prepared under known conditions of pressure and cooling rate by means of a Special apparatus designed and setup by the authors, were subjected to several isobaric runs at low cooling and heating rate in a confining fluid dilatometer (by GNOMIX). The effect of the previous thermo-mechanical histories and the effect of pressure in the dilatometry on specific volume of the samples was studied. Results show that the initial specific volume depends upon the previous thermo-mechanical histories, which however cancels out after the first heating run. Moreover the reported dilatometric experimental data Support the evidence that an increase of pressure at a constant cooling rate acts as an increase of cooling rate at a constant pressure.

Effect of pressure on the PVT behaviour of iPP as revealed by dilatometric measurements

BRIATICO VANGOSA, FRANCESCO;
2002-01-01

Abstract

Isotactic Poly-Propylene samples, previously prepared under known conditions of pressure and cooling rate by means of a Special apparatus designed and setup by the authors, were subjected to several isobaric runs at low cooling and heating rate in a confining fluid dilatometer (by GNOMIX). The effect of the previous thermo-mechanical histories and the effect of pressure in the dilatometry on specific volume of the samples was studied. Results show that the initial specific volume depends upon the previous thermo-mechanical histories, which however cancels out after the first heating run. Moreover the reported dilatometric experimental data Support the evidence that an increase of pressure at a constant cooling rate acts as an increase of cooling rate at a constant pressure.
2002
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/557526
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