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Rate-acceleration of TEMPO-mediated Polymerization of Styrene in the Presence of Various Acids  

Hong, Chang-Kook (School of Applied Chemical Engineering, Chonnam National University)
Jang, Heang-Sin (Department of Chemical Engineering, Inha University)
Hong, Sang-Hyun (Department of Chemical Engineering, Inha University)
Shim, Sang-Eun (Department of Chemical Engineering, Inha University)
Publication Information
Macromolecular Research / v.17, no.1, 2009 , pp. 14-18 More about this Journal
Abstract
The acceleration effect of various organic acids, such as methanesulfonic acid (MSA), ethanesulfonic acid (ESA), 4,4'-sulfonyldibenzoic acid (SDA), diphenylacetic acid (DPAA), and $\rho$-toluenesulfonic acid (TSA), on the rate of styrene bulk polymerization with 2,2,6,6-tetramethylpiperidinyloxy (TEMPO) and benzoyl peroxide (BPO) was investigated. The addition of organic acids significantly accelerated the rate. Among these organic acids, DPAA showed an efficient rate-accelerating effect with living nature of polymerization. When DPAA was used as a rate-accelerating additive for TEMPO-mediated living free radical polymerization (LFRP), the rate of polymerization was dramatically enhanced, the linearity of reaction kinetics was successfully maintained, and the polydispersity was effectively controlled.
Keywords
living polymerization; EMPO-mediated; polymerization rate; organic acid; rate-acceleration;
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