Abstract
Rheological studies of very high molecular weight Poly(methylmethacrylate) (PMMA) solutions have revealed three distinct types of anomolous behaviour. These are interpreted as being due to: at low rates, the formation of topological adsorption — entanglement layers? at intermediate rates the nucleation by adsorption-entanglement layers of a flowinduced liquid-liquid phase separation, and at high rates a spontaneous liquid-liquid phase separation. An attempt has been made to construct the phase diagram for the binary system PMMA — dimethylphthlate using shear stress, as well as temperature and solution concentration as thermodynamic variables.
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References
R.A.M. Hikmet, K.A. Narh, P.J. Barham and A. Keller, Progr. Coll and Polym.Sci., 1986 264, 507.
C. Rangel-Nafaile, A.B. Metzner and K.F. Wissbruns, Macromol. 1984, 17, 1187.
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© 1990 Elsevier Science Publishers Ltd
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Barham, P.J. (1990). Flow Induced Liquid-Liquid Phase Separation in High Molecular Weight Polymer Solutions. In: Lemstra, P.J., Kleintjens, L.A. (eds) Integration of Fundamental Polymer Science and Technology—4. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0767-6_3
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DOI: https://doi.org/10.1007/978-94-009-0767-6_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6831-4
Online ISBN: 978-94-009-0767-6
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