Summary
p-V-T measurements have been carried out on a broad series of polymers and polymer blends. The effect of pressure on the glass transition temperature, Tg, and on related properties-increments of the coefficients of expansion, Δα, and compressibility, ΔK, at Tg-has been evaluated critically. The results are discussed in terms of the free volume, the order parameter, and the statistical mechanical theory. It is concluded that neither the simple ‘free volume’ theory, nor the order parameter theory in the one order assumption predict correctly the observed behaviour. A possible explanation of the phenomena observed is offered assuming an expansion of the free volume, which is independent of the nature of the polymer. For the blends binary contacts between the components are discussed, with respect to interaction energy and to conformational rearrangements.
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References
Ferry JD (1980)Viscoelastic Properties of Polymers 3rd ed Wiley Interscience, New York
Simha R, Somcynsky T (1969) Macromolecules 2: 342
Simha R (1977) Macromolecules 10: 1025
Rehage G (1980) J Macromol Sci-Phys B 13: 423
Gibbs JH, DiMarzio EA (1958) J Chem Phys 28:373, 807
Skorodumov VF, Godovskii YK (1993) Polym Sci 35: 562
Zoller P, Hoehn HH (1982) J Polym Sci Polym Phys Ed 20: 1385
Simha R, Boyer RF (1962) J Chem Phys 37:1003; (1973) J Polym Sci-Polym Lett Ed 11:33
Boyer RF (1973) J Macromol Sci-Phys B7:487
Yue M, Wood, AK (1994) Polymer Bull in press
Fox TG (1956) Bull Am Phys Soc 1: 123
Gordon M, Taylor JS (1952) J Appl Chem USSR 2: 493
Brekner MJ, Schneider HA Cantow H-J (1988) Polymer 29: 78
Schneider HA (1988) Makromol Chem 189: 2085; (1989) Polymer 30: 771
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Dedicated to Prof. Dr. W. H. Stockmayer to his 80th birthday with the best wishes
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Schneider, H.A., Rudolf, B., Karlou, K. et al. Pressure influence on the glass transition of polymers and polymer blends. Polymer Bulletin 32, 645–652 (1994). https://doi.org/10.1007/BF00973914
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DOI: https://doi.org/10.1007/BF00973914