Melt rheological properties of polypropylene-maleated polypropylene blends: II. Dynamic viscoelastic properties

Li Shucai, Pentti Järvelä, Pirkko Järvelä

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)1649-1656
Number of pages8
JournalJournal of Applied Polymer Science
Volume71
Issue number10
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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Polypropylenes
Maleic Anhydrides
Maleic anhydride
Extruders
Molten materials
Copolymers
Chemical analysis

Cite this

Shucai, Li ; Järvelä, Pentti ; Järvelä, Pirkko. / Melt rheological properties of polypropylene-maleated polypropylene blends : II. Dynamic viscoelastic properties. In: Journal of Applied Polymer Science. 1999 ; Vol. 71, No. 10. pp. 1649-1656.
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abstract = "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.",
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Melt rheological properties of polypropylene-maleated polypropylene blends : II. Dynamic viscoelastic properties. / Shucai, Li; Järvelä, Pentti; Järvelä, Pirkko.

In: Journal of Applied Polymer Science, Vol. 71, No. 10, 1999, p. 1649-1656.

Research output: Contribution to journalArticleScientificpeer-review

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

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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<1649::AID-APP12>3.0.CO;2-#

DO - 10.1002/(SICI)1097-4628(19990307)71:10<1649::AID-APP12>3.0.CO;2-#

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JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

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