9th International Seminar on Polymer Science and Technology , 2009-10-17

Title : ( Preparation of rubbery (amourphous) polyethylene using late metal catalyst of [(2,6-i-prph)2DABMe2] NiBr2 )

Authors: , Gholamhossein Zohuri , ,

Citation: BibTeX | EndNote

Rubber like (amourphous) polyethylene with crystallinity of about 1 to 14% was prepared using a late metal catalyst of bis (2,6-isopropyl phenyl) 1,4-diazobutadine Nickel(II) dibromide [(2,6-i-prph)2 DABMe2]NiBr2. The optimum activity of the catalyst was observed at [Al]:[Ni] = 3333:1 molar ratio and of polymerization temperature of 25° C of polymerization. Higher concentration of MAO than the optimum value not only decreased the activity of the catalyst but also produced polyethylene-wax (PE-Wax). The rate/time profile of the polymerization was a decay type with an acceleration period of about 60 min at polymerization temperature of 25° C. The polyethylene produced at temperature lower than 50° C showed rubberly (amourphous) behavior while the reaction at 65° C produced PE-Wax. Activity of the catalyst was increased with monomer pressure to 5 atmosphere which studied. The viscosity average molecular weight ( V M ) of the polymer obtained was 7.5 ×104 at the monomer pressure of 3 bars and 35° C temperature.

Keywords

, Rubbery (amourphous) polyethylene, late metal catalyst, Ni- catalyst, ethylene
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@inproceedings{paperid:1012453,
author = {, and Zohuri, Gholamhossein and , },
title = {Preparation of rubbery (amourphous) polyethylene using late metal catalyst of [(2,6-i-prph)2DABMe2] NiBr2},
booktitle = {9th International Seminar on Polymer Science and Technology},
year = {2009},
location = {Tehran, IRAN},
keywords = {Rubbery (amourphous) polyethylene; late metal catalyst; Ni- catalyst; ethylene polymerization},
}

[Download]

%0 Conference Proceedings
%T Preparation of rubbery (amourphous) polyethylene using late metal catalyst of [(2,6-i-prph)2DABMe2] NiBr2
%A ,
%A Zohuri, Gholamhossein
%A ,
%J 9th International Seminar on Polymer Science and Technology
%D 2009

[Download]