Experimental Validation of Intermediate Termination in RAFT Polymerization with Dithiobenzoate via Comparison of Miniemulsion and Bulk Polymerization Rates
作者： Kiyoshi Suzuki , Yuko Nishimura , Yuta Kanematsu , Yoshie Masuda , Shuzaemon Satoh
关键词:
摘要: To understand if either of two controversial models for the retardation by RAFT agents is applicable, styrene polymerization using dithiobenzoate as agent carried out in both bulk and miniemulsion systems with same rates radical generation concentrations. Miniemulsion average diameters droplets ≈107 nm far faster than bulk, obtained rate agrees well calculated results assuming a bimolecular termination between propagating intermediate radical, generated addition reaction to agent, which shows that major reason agent.
sci-hub.se 参考文章(17)
Hadi K. Mahabadi, K. F. O'Driscoll, Absolute Rate Constants in Free-Radical Polymerization. III. Determination of Propagation and Termination Rate Constants for Styrene and Methyl Methacrylate Journal of Macromolecular Science, Part A. ,vol. 11, pp. 967- 976 ,(1977) , 10.1080/00222337708061301
Wibke Meiser, Michael Buback, Johannes Barth, Philipp Vana, RAFT/MADIX rate coefficients measured via time-resolved EPR spectroscopy after pulse laser initiation Polymer. ,vol. 51, pp. 5977- 5982 ,(2010) , 10.1016/J.POLYMER.2010.10.019
Hidetaka Tobita, Modeling Controlled/Living Radical Polymerization Kinetics: Bulk and Miniemulsion Macromolecular Reaction Engineering. ,vol. 4, pp. 643- 662 ,(2010) , 10.1002/MREN.201000029
Hans De Brouwer, Mike A. J. Schellekens, Bert Klumperman, Michael J. Monteiro, Anton L. German, Controlled radical copolymerization of styrene and maleic anhydride and the synthesis of novel polyolefin‐based block copolymers by reversible addition–fragmentation chain‐transfer (RAFT) polymerization Journal of Polymer Science Part A. ,vol. 38, pp. 3596- 3603 ,(2000) , 10.1002/1099-0518(20001001)38:19<3596::AID-POLA150>3.0.CO;2-F
Wibke Meiser, Johannes Barth, Michael Buback, Hendrik Kattner, Philipp Vana, EPR Measurement of Fragmentation Kinetics in Dithiobenzoate-Mediated RAFT Polymerization Macromolecules. ,vol. 44, pp. 2474- 2480 ,(2011) , 10.1021/MA102491X
Yungwan Kwak, Atsushi Goto, Takeshi Fukuda, Rate Retardation in Reversible Addition−Fragmentation Chain Transfer (RAFT) Polymerization: Further Evidence for Cross-Termination Producing 3-Arm Star Chain Macromolecules. ,vol. 37, pp. 1219- 1225 ,(2004) , 10.1021/MA030434P
Christopher Barner-Kowollik, John F. Quinn, T. L. Uyen Nguyen, Johan P. A. Heuts, Thomas P. Davis, Kinetic Investigations of Reversible Addition Fragmentation Chain Transfer Polymerizations: Cumyl Phenyldithioacetate Mediated Homopolymerizations of Styrene and Methyl Methacrylate Macromolecules. ,vol. 34, pp. 7849- 7857 ,(2001) , 10.1021/MA010349M
S. R. Simon Ting, Thomas P. Davis, Per B. Zetterlund, Retardation in RAFT Polymerization: Does Cross-Termination Occur with Short Radicals Only? Macromolecules. ,vol. 44, pp. 4187- 4193 ,(2011) , 10.1021/MA200831F
Yungwan Kwak, Atsushi Goto, Yoshinobu Tsujii, Yasujiro Murata, Koichi Komatsu, Takeshi Fukuda, A Kinetic Study on the Rate Retardation in Radical Polymerization of Styrene with Addition−Fragmentation Chain Transfer Macromolecules. ,vol. 35, pp. 3026- 3029 ,(2002) , 10.1021/MA0118421
Christopher Barner-Kowollik, John F. Quinn, David R. Morsley, Thomas P. Davis, Modeling the reversible addition–fragmentation chain transfer process in cumyl dithiobenzoate‐mediated styrene homopolymerizations: Assessing rate coefficients for the addition–fragmentation equilibrium Journal of Polymer Science Part A. ,vol. 39, pp. 1353- 1365 ,(2001) , 10.1002/POLA.1112