The dynamic viscoelastic properties of polypropylene (PP)–maleated PP blends in the molten state have been investigated with a dynamic mechanical thermal analyzer (PL‐DMTA MKII) at a frequency range (ω) of 0.6 ∗︁ 10−1–3.14 ∗︁ 102 rad s−1. In the study, the blends were prepared by melt‐blending in a twin‐screw extruder, using homopolypropylene and an ethylene–propylene copolymer as a matrix, respectively, and PP grafted with maleic anhydride (PP‐g‐MA) as a second component. It has been found that the data of the blends do not obey the Cox–Merz rule; the plots of log G′–log G" for the both blends show a composition dependence. It is due to the fact that the two kinds of PP are immiscible with PP‐g‐MA.
|Journal||Journal of Applied Polymer Science|
|Publication status||Published - 1999|
|MoE publication type||A1 Journal article-refereed|
Shucai, L., Järvelä, P., & Järvelä, P. (1999). Melt rheological properties of polypropylene-maleated polypropylene blends: II. Dynamic viscoelastic properties. Journal of Applied Polymer Science, 71(10), 1649-1656. https://doi.org/10.1002/(SICI)1097-4628(19990307)71:10%3C1649::AID-APP12%3E3.0.CO;2-%23