TY - JOUR
T1 - Melt rheological properties of polypropylene-maleated polypropylene blends
T2 - II. Dynamic viscoelastic properties
AU - Shucai, Li
AU - Järvelä, Pentti
AU - Järvelä, Pirkko
N1 - Project code: K5SU00194
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
U2 - 10.1002/(SICI)1097-4628(19990307)71:10%3C1649::AID-APP12%3E3.0.CO;2-%23
DO - 10.1002/(SICI)1097-4628(19990307)71:10%3C1649::AID-APP12%3E3.0.CO;2-%23
M3 - Article
SN - 0021-8995
VL - 71
SP - 1649
EP - 1656
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 10
ER -