Miscibility behaviour of blends of poly(vinyl chloride) with poly(methyl methacrylate-co-styrene) copolymers
(1997) Polymer — Vol. 38, n° 2, p. 421-429 (1997)
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- Poly(vinyl chloride) (PVC) is shown to be completely miscible in the melt with a poly(methyl methacrylate-co-styrene) (P(MMA-co-St)) copolymer having a low styrene content (0-10 wt%). In blends of PVC with a low molecular weight P(MMA-co-St) copolymer containing 20 wt% of styrene, a lower critical solution temperature is found at approximately 170 degrees C. For blends of PVC with P(MMA-co-St) copolymers containing 30 wt% of styrene, immiscibility is found over the whole temperature range (150-210 degrees C) and independently of the molecular weight of the copolymer. These experimental results have been modelled using a mean-field binary interaction model of the Flory-Huggins theory. The binary interaction energy density for this blend system correctly predicts the homogeneous dispersion of methyl methacrylate/butadiene/styrene (MBS) graft copolymers in a PVC matrix. Copyright (C) 1996 Elsevier Science Ltd.
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Dompas, D., Groeninckx, G., Isogawa, M., Hasegawa, T., & Kadokura, M. (1997). Miscibility behaviour of blends of poly(vinyl chloride) with poly(methyl methacrylate-co-styrene) copolymers. Polymer, 38(2), 421-429. https://doi.org/10.1016/S0032-3861(96)00523-X (Original work published 1997)