Title : ( Thermal Behavior of Polyethylene Reactor Alloys Polymerized by Ziegler–Natta/Late Transition Metal Hybrid Catalyst )
Authors: Saeid Ahmadjo , Samaneh Dehghani , Gholamhossein Zohuri , Gholam Reza Nejabat , Hamed Jafarian , Mostafa Ahmadi , Seyed Mohamad Mehdi Mortazavi ,
Full TextAbstract
Polyethylene reactor alloys are synthesized through heterogeneous ethylene polymerization with a new type of Ziegler-Natta (ZN)/late transition metal (LTM) hybrid catalyst. The effect of various parameters including catalyst composition (LTM/ZN ¼0.01, 0.02, 0.04), polymerization temperature (TP ¼30, 30–60, 60 8C) and loading temperature (TL ¼30, 60 8C) on catalyst activity, chain’s vinyl content, viscosity average molecular weight (M ) and thermal properties are investigated. Two distinct melting peaks were observed in the ranges of 110–140 8C and 60–90 8C, indicating presence of two different lamellar structures. LTM/ZN ratio shifted melting peaks toward lower values. Rheological properties confirmed homogeneity of polymer blend’s microstructure as they follow time temperature superposition.
Keywords
, Polyethylene, Reactor Alloys, Polymerization, Hybride Catalyst
@article{paperid:1056141,
author = {Saeid Ahmadjo and Samaneh Dehghani and Zohuri, Gholamhossein and Gholam Reza Nejabat and Hamed Jafarian and Mostafa Ahmadi and Seyed Mohamad Mehdi Mortazavi},
title = {Thermal Behavior of Polyethylene Reactor Alloys Polymerized by Ziegler–Natta/Late Transition Metal Hybrid Catalyst},
journal = {Macromolecular Reaction Engineering},
year = {2015},
volume = {9},
number = {1},
month = {February},
issn = {1862-832x},
pages = {8--18},
numpages = {10},
keywords = {Polyethylene; Reactor Alloys; Polymerization; Hybride Catalyst},
}
%0 Journal Article
%T Thermal Behavior of Polyethylene Reactor Alloys Polymerized by Ziegler–Natta/Late Transition Metal Hybrid Catalyst
%A Saeid Ahmadjo
%A Samaneh Dehghani
%A Zohuri, Gholamhossein
%A Gholam Reza Nejabat
%A Hamed Jafarian
%A Mostafa Ahmadi
%A Seyed Mohamad Mehdi Mortazavi
%J Macromolecular Reaction Engineering
%@ 1862-832x
%D 2015
