Etude des propriétés viscoélastiques de quelques mélanges polybutène‐1 – polypropène

Abstract

Date de rkeption: 12 Novembre 1975) ZUSAMMENFASSUNG:Die viskoelastischen Eigenschaften von Mischungen aus Polybuten-1 und Polypropen werden im /I-Relaxationsgebiet untersucht. Es gibt nur einen Relaxationspeak, und die Mischungen scheinen in der amorphen Phase vertraglich zu sein. Diese Beobachtungen bestatlgen die von uns bereits fruher aufgestellten Hypothesen iiber den EinfluD der relativen Lange der Alkylgruppe in Polyolefinmischungen. SUMMARY:Viscoelastic properties of polybutene-I-polypropene blends were investigated in the p-relaxation range. Those blends show only one relaxation peak and are assumed to be compatible in the amorphous phase. These results permit to corroborate our former assumption concerning the influence of the relative length of the alkyl group in polyolefin blends.

Control of Chain Orientation in Blends of Polypropylene and Polybutene‐1

“…Furthermore, the G′ and G″ of the blend were located between those of the individual pure components, as similarly reported in previous works . Because there is no additional relaxation mechanism with a long characteristic time, the blend is considered to be miscible in the molten state as reported previously …”

“…The miscibility of PP and PB has been studied for a long time . Piloz et al evaluated the dynamic mechanical properties of PP/PB blends and found that both polymer chains dissolve into each other in the amorphous region .…”

The impact of viscoelastic behavior and viscosity ratio on the phase behavior and morphology of polypropylene/polybutene‐1 blends

“…The state of the miscibility of the blends in the molten state affects the final performance and is attractive to industries. There is ample research about the miscibility and compatibility of different kinds of polyolefins, such as various types of polyethylene and PP/PB‐1 blends . Polyethylene blends were reported to be miscible, partially miscible, or immiscible depending on molecular parameters, such as molecular weight, molecular weight distribution, branch content, and composition .…”

Dynamic viscoelastic behavior of polypropylene/polybutene‐1 blends and its correlation with morphology

“…It is generally accepted that, miscibility in polymer blends must be supported by the existence of specific interactions between the components. The miscibility and compatibility of PP and PB‐1 blends was the subject of various studies 6, 7–9. It has been reported that there are not any specific interactions between PP and PB‐1 in the blends, and the balance between dispersive and entropic driving force implies miscibility in some compositions 10.…”