Copolymerization of ethylene α-olefin using MgCl2-ethanol adduct catalysts

被引：6

作者：

Masoori, Maryam ^{[1
]}

Ahmadjo, Saeid ^{[1
]}

Mortazavi, Seyed Mohammad Mahdi ^{[2
]}

Vakili, Mohammad ^{[3
]}

机构：

[1] Iran Polymer & Petrochem Inst, Dept Catalyst, Tehran, Iran

[2] Iran Polymer & Petrochem Inst, Dept Engn, Tehran, Iran

[3] Bakhtar Petrochem Co, Polymer Res Ctr, Lorestan, Iran

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY | 2017年 / 54卷 / 03期

关键词：

Comonomer; copolymerization; molecular weight; morphology; Ziegler-Natta catalyst; ZIEGLER-NATTA CATALYSTS; HETEROGENEOUS CATALYSIS; ETHYLENE/1-HEXENE COPOLYMERIZATION; PROPYLENE POLYMERIZATION; COMONOMER; PREPOLYMERIZATION; POLYOLEFINS; TEMPERATURE; MORPHOLOGY; KINETICS;

D O I：

10.1080/10601325.2017.1265397

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effects of the type and concentration of comonomers 1-hexene and 1-octene in the copolymerization of ethylene were investigated using pre polymerized Ziegler-Natta (catalyst a) and without pre polymerized (catalyst b) catalysts in the presence of hydrogen as a chain transfer agent. The properties of produced polymers were characterized by a set of techniques: (SEM), (EDX), (DSC), (GPC). TIBA and DEAC were used as co catalysts. The results of microscopic and SEM images showed the morphology and structure of catalysts (a) and (b) and the obtained spherical polymers. In the presence of 1-hexene, activity of catalyst (a) was at its maximum. The comonomer 1-octene at 32 mmol presented its activity (1.7 x 10(3) g polymer/(g cat.h)) and after that, the activities decreased. Copolymerization of ethylene and 1-hexene by catalyst (b) showed higher activity (1.6 x 10(3) g polymer/ polymer/(g cat.h)) at 40 mmol concentration of 1-hexene in comparison to catalyst (a).

引用

页码：140 / 144

页数：5

共 34 条

[11] Technology: driving force behind innovation and growth of polyolefins [J].

Galli, P ;

Vecellio, G .

PROGRESS IN POLYMER SCIENCE, 2001, 26 (08) :1287-1336

[12] Polyolefins: The most promising large-volume materials for the 21st century [J].

Galli, P ;

Vecellio, G .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2004, 42 (03) :396-415

[13] ADVANCES IN THE POLYMERIZATION OF POLYOLEFINS WITH COORDINATION CATALYSTS [J].

GALLI, P ;

LUCIANI, L ;

CECCHIN, G .

ANGEWANDTE MAKROMOLEKULARE CHEMIE, 1981, 94 (MAR) :63-89

[14]

Hoff R. E., 2010, HDB TRANSITION METAL, V65, P1

[15] Probing the roles of diethylaluminum chloride in propylene polymerization with MgCl2-supported ziegler-natta catalysts [J].

Hu, Jie ;

Han, Bin ;

Shen, Xian-rong ;

Fu, Zhi-sheng ;

Fan, Zhi-qiang .

CHINESE JOURNAL OF POLYMER SCIENCE, 2013, 31 (04) :583-590

[16] POLYMERIZATION OF OLEFINS THROUGH HETEROGENEOUS CATALYSIS .13. THE INFLUENCE OF COMONOMER IN THE SOLUTION COPOLYMERIZATION OF ETHYLENE [J].

JABER, IA ;

RAY, WH .

JOURNAL OF APPLIED POLYMER SCIENCE, 1993, 49 (10) :1709-1724

[17] POLYMERIZATION OF OLEFINS THROUGH HETEROGENEOUS CATALYSIS .14. THE INFLUENCE OF TEMPERATURE IN THE SOLUTION COPOLYMERIZATION OF ETHYLENE [J].

JABER, IA ;

RAY, WH .

JOURNAL OF APPLIED POLYMER SCIENCE, 1993, 50 (02) :201-215

[18] POLYMERIZATION OF OLEFINS THROUGH HETEROGENEOUS CATALYSIS .15. THE INFLUENCE OF PRESSURE IN THE SOLUTION COPOLYMERIZATION OF ETHYLENE [J].

JABER, IA ;

RAY, WH .

JOURNAL OF APPLIED POLYMER SCIENCE, 1993, 50 (02) :217-231

[19] Morphological study of spherical MgCl2•nEtOH supported TiCl4 Ziegler-Natta catalyst for polymerization of ethylene [J].

Jamjah, R. ;

Zohuri, G. H. ;

Vaezi, J. ;

Ahmadjo, S. ;

Nekomanesh, M. ;

Pouryari, M. .

JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 101 (06) :3829-3834

[20] The Influence of Comonomer on Ethylene/α-Olefin Copolymers Prepared Using [Bis(N-(3-tert butylsalicylidene)anilinato)] Titanium (IV) Dichloride Complex [J].

Kaivalchatchawal, Patcharaporn ;

Suttipitakwong, Pattiya ;

Samingprai, Sutheerawat ;

Praserthdam, Piyasan ;

Jongsomjit, Bunjerd .

MOLECULES, 2011, 16 (02) :1655-1666

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