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

被引：10
|
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
收藏
页码：1088 / 1094
页数：7
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