Controlled radical polymerization of vinyl acetate in supercritical CO2 catalyzed by CuBr/terpyridine

被引：11

作者：

Islam, Mohammad Tariqul ^{[1
]}

Haldorai, Yuvaraj ^{[1
]}

Van Hoa Nguyen ^{[1
,2
]}

Islam, Muhammad Naoshad ^{[1
]}

Ra, Choon Sup ^{[3
]}

Shim, Jae-Jin ^{[1
]}

机构：

[1] Yeungnam Univ, Sch Chem Engn, Kyongsan 712749, South Korea

[2] Nha Trang Univ, Dept Chem, Nha Trang, Vietnam

[3] Yeungnam Univ, Dept Chem, Gyongsan 712749, Gyeongbuk, South Korea

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 31卷 / 06期

关键词：

Vinyl Acetate; Living Polymerization; Copper Catalyst; Supercritical CO2; Atom Transfer Radical Polymerization (ATRP); FRAGMENTATION CHAIN TRANSFER; CARBON-DIOXIDE; METHYL-METHACRYLATE; DISPERSION POLYMERIZATION; EQUILIBRIUM-CONSTANTS; RATE COEFFICIENTS; FLUID CO2; COMPLEXES; COPPER; ATRP;

D O I：

10.1007/s11814-014-0031-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Poly(vinyl acetate) (PVAc) was synthesized by the atom transfer radical polymerization of vinyl acetate (VAc) in supercritical carbon dioxide using CuBr/2,2':6',2aEuro(3)-terpyridine complex as a catalyst and ethyl 2-bromoisobutyrate as an initiator. Polymerization proceeded in a controlled manner, and low to moderate conversion was achieved within a reasonable time. The effects of the monomer amount, temperature, pressure, initiator, and ligand loading on monomer conversion, molecular weight and molecular weight distribution of the polymer were examined. The reaction kinetics was also investigated. The polymerization reaction was found to be first-order with respect to the monomer concentration. The molecular weights of the resulting PVAc increased linearly with increasing VAc conversion.

引用

页码：1088 / 1094

页数：7

共 36 条

[1] Influence of monomer structure on the propagation kinetics of acrylate and methacrylate homopolymerizations studied via PLP-SEC in fluid CO2 [J].

Beuermann, S ;

Buback, M ;

El Rezzi, V ;

Jürgens, M ;

Nelke, D .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2004, 205 (07) :876-883

[2]

Beuermann S, 1998, MACROMOL CHEM PHYSIC, V199, P1209, DOI 10.1002/(SICI)1521-3935(19980601)199:6<1209::AID-MACP1209>3.3.CO

[3]

2-N

[4] Copper and bismuth complexes containing dipyridyl gem-diolato ligands: Bi-2(III)(2-Py)(2)CO(OH)](2)(O2CCF3)(4)(THF)(2), Cu-II[(2-Py)(2)CO(OH)](2)(HO2CCH3)(2), and Cu-4(II)[(2-Py)(2)CO(OH)(2)(O2CCH3)(6)(H2O)(2), a ferromagnetically coupled tetranuclear copper(II) chain [J].

Breeze, SR ;

Wang, SN ;

Greedan, JE ;

Raju, NP .

INORGANIC CHEMISTRY, 1996, 35 (24) :6944-6951

[5] Equilibrium Constants and Activation Rate Coefficients for Atom Transfer Radical Polymerizations at Pressures up to 2 500 Bar [J].

Buback, Michael ;

Morick, Joachim .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2010, 211 (19) :2154-2161

[6]

Canelas DA, 1997, ADV POLYM SCI, V133, P103

[7] Polymer synthesis and processing using supercritical carbon dioxide [J].

Cooper, AI .

JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (02) :207-234

[8] DISPERSION POLYMERIZATIONS IN SUPERCRITICAL CARBON-DIOXIDE [J].

DESIMONE, JM ;

MAURY, EE ;

MENCELOGLU, YZ ;

MCCLAIN, JB ;

ROMACK, TJ ;

COMBES, JR .

SCIENCE, 1994, 265 (5170) :356-359

[9]

Destarac M, 2000, MACROMOL RAPID COMM, V21, P1035, DOI 10.1002/1521-3927(20001001)21:15<1035::AID-MARC1035>3.0.CO

[10]

2-5

← 1 2 3 4 →