Cloud-point data to 160°C and 2000 bar are presented showing the effect of cosolvents on the phase behaviour of poly(ethylene-co-methyl acrylate) (EMA) (64 mo1%/36 mol%) with propane and chlorodifluoromethane (F22). Ethanol shifts the EMA-propane cloud-point curves to lower temperatures and pressures, but above _ 10 wt% ethanol, the copolymer becomes insoluble. Up to 40 wt% acetone monotonically shifts the EMA-propane cloud-point curves to lower temperatures and pressures. Acetone and ethanol both shift the cloud-point curves of EMA-F22 mixtures in the same monotonic manner for cosolvent concentrations of up to 40 wt%.
Посилання на статтю:
Poly( ethylene-co-methyl acrylate)-solventcosolvent phase behaviour at high pressures / Melchior A. Meilchen, Bruce M. Hasch, Sang-Ho Leeand Mark A. McHugh* // Polymer. – 1992. – Vol 33. – P. 1922-1925.