Solubility parameters of ethene/1-octene random copolymers

Random copolymers of ethene with 1-octene were investigated by means of pressure-volume-temperature (PVT) measurements. Solubility parameters were calculated from the thermal expansion coefficients and isothermal compressibilities. While expansion coefficients are virtually independent of 1-octene c...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 1998-02, Vol.40 (2-3), p.337-344
Main Authors: MAIER, R.-D, SUHM, J, KRESSLER, J, MÜLHAUPT, R
Format: Article
Language:English
Subjects:
Applied sciences
Compressibility
Copolymers
Ethylene
Exact sciences and technology
Mathematical analysis
Octenes
Organic polymers
Physicochemistry of polymers
Properties and characterization
Solubility parameters
Thermal and thermodynamic properties
Thermal expansion
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Summary:Random copolymers of ethene with 1-octene were investigated by means of pressure-volume-temperature (PVT) measurements. Solubility parameters were calculated from the thermal expansion coefficients and isothermal compressibilities. While expansion coefficients are virtually independent of 1-octene content, compressibilities decrease with increasing 1-octene incorporation. The solubility parameters varied between 17.3 and 15.2 MPa1/2 when 1-octene incorporation was varied between 2 and 100 wt%. In the framework of the solubility parameter concept copolymers containing less than 95 wt% 1-octene were shown to be immiscible with isotactic poly(propene).
ISSN:0170-0839
1436-2449
DOI:10.1007/s002890050260