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Phase Behaviour of the System PropenePolypropene at High Pressure
Joint Authors
Brant, Patrick
Ruhl, Oliver
Shutt, John Richard
Luft, Gerhard
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-11-02
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
The phase behaviour of mixtures of supercritical propene and a number of polypropenes, which have a similar density but significantly different molecular weights and tacticities, was investigated in a broad range of polymer weight fractions and temperatures at high pressures.
The cloud-point pressures were measured optically, using a view cell which was equipped with two windows made of synthetic sapphire and a metal bellows to accurately adjust the pressure.
The cloud-point pressures were found in the range from 29 to 37 MPa decreasing with increasing polymer weight fraction and increasing with increasing temperature and polymer molecular weight.
The critical weight fraction was found below 2 to 6 wt.-%.
Whereas the cloud-point pressures of atactic and syndiotactic samples were high and very similar, the isotactic species exhibit distinctly lower values.
The results, extrapolated to lower temperatures, show good agreement with the literature data.
American Psychological Association (APA)
Ruhl, Oliver& Luft, Gerhard& Brant, Patrick& Shutt, John Richard. 2011. Phase Behaviour of the System PropenePolypropene at High Pressure. Journal of Thermodynamics،Vol. 2011, no. 2011, pp.1-5.
https://search.emarefa.net/detail/BIM-460095
Modern Language Association (MLA)
Ruhl, Oliver…[et al.]. Phase Behaviour of the System PropenePolypropene at High Pressure. Journal of Thermodynamics No. 2011 (2011), pp.1-5.
https://search.emarefa.net/detail/BIM-460095
American Medical Association (AMA)
Ruhl, Oliver& Luft, Gerhard& Brant, Patrick& Shutt, John Richard. Phase Behaviour of the System PropenePolypropene at High Pressure. Journal of Thermodynamics. 2011. Vol. 2011, no. 2011, pp.1-5.
https://search.emarefa.net/detail/BIM-460095
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-460095