The thermodynamics of mixing of polystyrene and poly(α-methylstyrene) from a calorimetric viewpoint

A. Brunacci; E. Pedemonte; J. M G Cowie; I. J. McEwen

The thermodynamics of mixing of polystyrene and poly(α-methylstyrene) from a calorimetric viewpoint

A. Brunacci, E. Pedemonte, J. M G Cowie, I. J. McEwen

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The enthalpy of mixing (?_MH) for polystyrene with poly(a-methylstyrene) has been estimated by a semidirect calorimetric method. This involved measuring heats of solution of blends and of mechanical mixtures having the same composition to obtain, by difference, the heat of mixing of the two polymers in their glassy states. By assuming a model for the relaxation of a glass to its corresponding hypothetical liquid state, these were then converted to give a ?_MH value for the liquid polymers. A small negative value for the heat of mixing was obtained over part of the composition range, contrary to expectations. © 1994.

Original language	English
Pages (from-to)	2893-2896
Number of pages	4
Journal	Polymer
Volume	35
Issue number	13
Publication status	Published - Jun 1994

Keywords

calorimetry
heat of mixing
polystyrene

Cite this

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title = "The thermodynamics of mixing of polystyrene and poly(α-methylstyrene) from a calorimetric viewpoint",

abstract = "The enthalpy of mixing (?MH) for polystyrene with poly(a-methylstyrene) has been estimated by a semidirect calorimetric method. This involved measuring heats of solution of blends and of mechanical mixtures having the same composition to obtain, by difference, the heat of mixing of the two polymers in their glassy states. By assuming a model for the relaxation of a glass to its corresponding hypothetical liquid state, these were then converted to give a ?MH value for the liquid polymers. A small negative value for the heat of mixing was obtained over part of the composition range, contrary to expectations. {\textcopyright} 1994.",

keywords = "calorimetry, heat of mixing, polystyrene",

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year = "1994",

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T1 - The thermodynamics of mixing of polystyrene and poly(α-methylstyrene) from a calorimetric viewpoint

AU - Brunacci, A.

AU - Pedemonte, E.

AU - Cowie, J. M G

AU - McEwen, I. J.

PY - 1994/6

Y1 - 1994/6

N2 - The enthalpy of mixing (?MH) for polystyrene with poly(a-methylstyrene) has been estimated by a semidirect calorimetric method. This involved measuring heats of solution of blends and of mechanical mixtures having the same composition to obtain, by difference, the heat of mixing of the two polymers in their glassy states. By assuming a model for the relaxation of a glass to its corresponding hypothetical liquid state, these were then converted to give a ?MH value for the liquid polymers. A small negative value for the heat of mixing was obtained over part of the composition range, contrary to expectations. © 1994.

AB - The enthalpy of mixing (?MH) for polystyrene with poly(a-methylstyrene) has been estimated by a semidirect calorimetric method. This involved measuring heats of solution of blends and of mechanical mixtures having the same composition to obtain, by difference, the heat of mixing of the two polymers in their glassy states. By assuming a model for the relaxation of a glass to its corresponding hypothetical liquid state, these were then converted to give a ?MH value for the liquid polymers. A small negative value for the heat of mixing was obtained over part of the composition range, contrary to expectations. © 1994.

KW - calorimetry

KW - heat of mixing

KW - polystyrene

UR - http://www.scopus.com/inward/record.url?scp=2142783026&partnerID=8YFLogxK

M3 - Article

SN - 0032-3861

VL - 35

SP - 2893

EP - 2896

JO - Polymer

JF - Polymer

IS - 13

ER -

The thermodynamics of mixing of polystyrene and poly(α-methylstyrene) from a calorimetric viewpoint

Abstract

Keywords

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