Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 62: Issue 1
Compatibility Range in Polymer Mixtures. An approach using analogue calorimetry and group contribution procedures
Authors:
C. Cardelli Dipartimento di Chimica e Chimica Industriale Via Risorgimento 35 56126 Pisa Italy Via Risorgimento 35 56126 Pisa Italy

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G. Conti Dipartimento di Chimica e Chimica Industriale Via Risorgimento 35 56126 Pisa Italy Via Risorgimento 35 56126 Pisa Italy

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P. Gianni Dipartimento di Chimica e Chimica Industriale Via Risorgimento 35 56126 Pisa Italy Via Risorgimento 35 56126 Pisa Italy

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R. Porta Dipartimento di Chimica e Chimica Industriale Via Risorgimento 35 56126 Pisa Italy Via Risorgimento 35 56126 Pisa Italy

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Pages:
135–151
Online Publication Date:
02 Nov 2004
Publication Date:
01 Oct 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010118929599
Keywords:
analogue calorimetry; binary and ternary mixtures; excess enthalpies; group contributions; model compounds; polymer blends
Restricted access

Abstract  

The mixing enthalpies of blends of polymethylmethacrylate (PMMA) with poly(styrene-co-acrylonitrile) (SAN) were investigated by analogue calorimetry through the determination of the excess enthalpies of pseudobinary model mixtures corresponding to the addition of methyl-i-butyrate to a binary mixture of acetonitrile or propionitrile plus toluene or ethylbenzene. A group contribution procedure, based on UNIQUAC equation, was also devised and the polymeric mixing enthalpies were calculated from properly defined group contributions. Enthalpies for polymeric interactions were introduced into the Flory-Huggins equation and the miscibility window of PMMA-SAN mixtures was calculated. The results show a qualitative agreement with the experimental miscibility data and indicate that both the analogue calorimetry and the group contribution procedures yield correct results when acetonitrile, and not propionitrile, is chosen as the model for the polyacrylonitrile repeat unit of the copolymer.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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