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- R. S. Spencer
- The Dow Chemical Company, Midland, Michigan
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- G. D. Gilmore
- The Dow Chemical Company, Midland, Michigan
抄録
<jats:p>Practical considerations emphasize the desirability of formulating an adequate equation of state for polystyrene. A fairly satisfactory one is this simplified version of van der Waals' equation, (P+π)(V−ω)=nRT,where π is the internal pressure (or cohesive energy density) and ω is the volume at absolute zero, by extrapolation. Evaluating constants from thermal expansion data and expressing P in p.s.i., V in cc per gram, and T in degrees Kelvin, this becomes (P+27,000)(V−0.822)=11.6T.Agreement with compressibility measurements, which are described in some detail, is good. Discrepancies with room temperature values of sound velocity and cohesive energy density by swelling measurements are discussed briefly.</jats:p>
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 20 (6), 502-506, 1949-06-01
AIP Publishing
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詳細情報 詳細情報について
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- CRID
- 1361981468742339584
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- NII論文ID
- 30015899604
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- ISSN
- 10897550
- 00218979
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- データソース種別
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