Copper mediated controlled radical copolymerization of styrene and 2-ethylhexyl acrylate and determination of their reactivity ratios

被引:5
作者
Koiry, Bishnu P. [1 ]
Singha, Nikhil K. [1 ]
机构
[1] Indian Inst Technol, Ctr Rubber Technol, Kharagpur 721302, W Bengal, India
来源
FRONTIERS IN CHEMISTRY | 2014年 / 2卷
关键词
controlled radical polymerization; ATRP; polystyrene; poly(2-ethylhexyl acrylate); copolymers; reactivity ratio; thermal properties; FRAGMENTATION CHAIN TRANSFER; METHYL-METHACRYLATE; BUTYL ACRYLATE; POLYMERIZATION; NITROXIDE; TEMPERATURE; KINETICS;
D O I
10.3389/fchem.2014.00091
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Copolymerization is an important synthetic tool to prepare polymers with desirable combination of properties which are difficult to achieve from the different homopolymers concerned. This investigation reports the copolymerization of 2-ethylhexyl acrylate (EHA) and styrene using copper bromide (CuBr) as catalyst in combination with N,N,N',N '',N ''- pentamethyldiethylenetriamine (PMDETA) as ligand and 1-phenylethyl bromide (PEBr) as initiator. Linear kinetic plot and linear increase in molecular weights vs. conversion indicate that copolymerization reactions were controlled. The copolymer composition was calculated using H-1 NMR studies. The reactivity ratio of styrene and EHA (r(1) and r(2)) were determined using the Finemann Ross (FR), inverted Finemann Ross (IFR), and Kelen Tudos (KT) methods. Thermal properties of the copolymers were also studied by using TGA and DSC analysis.
引用
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页数:8
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