Macromolecular Rapid Communications, Vol.26, No.12, 973-978, 2005
A closed-loop phase diagram in a weakly interacting polyolefin copolymer binary blend system
The phase behavior of poly(ethylene-co-styrene) (PES) and poly(ethylene-co-butene)(PEB) blends has been studied. A closed-loop phase diagram was clearly observed in this weakly interacting system as the styrene content in the PES decrease to about 1 mol-%. At higher styrene contents, the phase loop starts to interplay with the crystallization transformation at lower temperatures.