6533b832fe1ef96bd129a551
RESEARCH PRODUCT
Effect of pressure on the PVT behaviour of iPP as revealed by dilatometric measurements
V. La CarrubbaFrancesco Briatico-vangosaStefano PiccaroloValerio Brucatosubject
Settore ING-IND/24 - Principi Di Ingegneria ChimicaPolymers and PlasticsChemistryThermodynamicsSettore ING-IND/34 - Bioingegneria IndustrialeGeneral ChemistryCondensed Matter Physicslaw.inventionCooling rateSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiVolume (thermodynamics)Constant pressurelawIsotactic Poly-PropyleneMaterials ChemistryIsobaric processDilatometerCrystallizationConstant (mathematics)description
Isotactic Poly-propylene samples, previously prepared under known conditions of pressure and cooling rate by means of a special apparatus designed and set-up 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. © Springer-Verlag 2002.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-11-01 |