Effect of polymerization time on the molecular weight and molecular weight distribution of polypropylene | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1312181

Reference Type

Journal Article

Title

Effect of polymerization time on the molecular weight and molecular weight distribution of polypropylene

Author(s)

Abedi, S; Hosseinzadeh, M; Kazemzadeh, MA; Daftari-Besheli, M

Year

2006

Is Peer Reviewed?

Yes

Journal

Journal of Applied Polymer Science
ISSN: 0021-8995
EISSN: 1097-4628

Volume

100

Issue

Page Numbers

368-371

DOI

10.1002/app.23123

Web of Science Id

WOS:000235556100045

Abstract

GPC studies showed that increasing the polymerisation time increased the number-average molecular weight, the weight-average molecular weight, molecular weight distribution (MWD) and relative MWD (the ratio of two MWDs in two consecutive periods of the polymerisation time) of PP in propylene polymerisation carried out using a magnesium diethoxide/diisobutyl phthalate (DIBP)/titanium tetrachloride/phenyl triethoxy silane (PTES)/triethylaluminium (TEA) catalyst system in the slurry phase. Magnesium diethoxide was the support, DIBP the internal donor, titanium tetrachloride the catalyst, PTES the external donor and TEA the cocatalyst. 20 refs.

Keywords

PP; Ziegler-Natta polymerization; GPC