Prof. Dr. Michael Buback

++49 - 551 - 39 3140 e-mail homepage (http://www.uni-pc.gwdg.de/buback/bubackstart.html) Georg-August-Universität Göttingen Institut für Physikalische Chemie Tammannstrasse 6 37077 Göttingen Germany

• Kinetics of radical polymerization
• Radical Polymerization in supercritical CO2
• Controlled radical polymerizations
• Processes in supercritical fluid systems
• Fluid-phase equilibria
• Spectroscopy
• Reaction kinetics

PCGG activities

Ongoing and Planned Research Group Interaction(s) within the Graduate School

• The Zippelius Group
• The Griesinger Group
• The Krebs Group
• The Samwer Group
• The Abel Group
• The Signorell Group
• The Eckold Group
• The Kirchheim Group
• The Salditt Group

• Free radical polymerization
• Pulsed laser polymerization

• ♦ M. Buback, T. Junkers, M. Müller, Free-radical propagation and termination kinetics of the butyl acrylate dimer studied by pulsed laser polymerization techniques , Polymer 2009, 50, 3111-3118.
• ♦ M. Buback, F. Günzler, G.T. Russel, P. Vana, Determination of the Mode of Termination in Radical Polymerization via Mass Spectrometry, Macromolecules, (in press 2008).
• ♦ J. Hachenberg, B. Steisel, U. Nergui, D. Bedorf, M. Buback, K. Samwer, Effect of Chemical Confinement on the mechanical relaxation spectra of poly(ethene-co-methacrylic acid) copolymers, Int. J. Mater. Res. 2008, 99, 502-506.
• ♦ M. Buback, P. Hesse, T. Junkers, T. Sergeeva, T. Theist, PLP Labeling in ESR spectroscopic analysis of secondary and tertiary acrylate propagating radicals, Macromolecules 2008, 41, 288-291.
• ♦ M. Buback, P. Hesse, T. Junkers, T. Theis, P. Vana, Chain-Length Dependent Termination in Acrylate Radical Polymerization Studied via Pulsed-Laser-Initiated RAFT Polymerization, Aust. J. Chem. 2007, 60, 779-787.
• ♦ M. Buback, O. Janssen, R. Oswald, S. Schmatz, P. Vana, A Missing Reaction Step in Dithiobenzoate-Mediated RAFT Polymerization, Macromolecular Symposia 2007, 248, 158-167.
• ♦ M. Buback, T. Junkers, P. Vana, Pulsed-Laser Initiated RAFT Polymerization, Controlled/Living Radical Polymerization: From Synthesis to Materials (ACS Symposium Series) 2006, 944, 455-472.
• ♦ E. Süske, T. Scharf, T. Junkers, M. Buback, H.-U. Krebs, Mechanism of poly(methyl methacrylate) film formation by pulsed laser deposition, J. Appl. Phys. 2006, 100, 014906.
• ♦ M. Buback, E. Müller, G. T. Russell, SP-PLP-EPR Study of Chain-Length-Dependent Termination in Free-Radical Polymerization of n-Dodecyl Methacrylate, Cyclohexyl Methacrylate and Benzyl methacrylate: Evidence of ´Composite´ Behavior, J. Phys. Chem. A 2006, 110, 3222-3230.
• ♦ C. Barner-Kowollik, M. Buback, B. Charleux, M. L. Coote, M. Drache, T. Fukuda, A. Goto, B. Klumperman, A. B. Lowe, J. B. Mcleary, G. Moad, M. J. Monteiro, R. D. Sanderson, M. P. Tonge, P. Vana, Mechanism and Kinetics of Dithiobenzoate-Mediated RAFT Polymerization, 1: The Current Situation, Journal of Polymer Science, Part A: Polymer Chemistry 2006, 44, 5809-5831.
• ♦ M. Buback, P. Hesse, T. Junkers, P. Vana, Determination of Addition and Fragmentation Rate Coefficients in RAFT Polymerization via Time-Resolved ESR Spectroscopy after Laser Pulse Initiation, Macromol. Rapid Commun. 2006, 27, 182-187.
• ♦ M. Buback, T. Junkers, Termination kinetics of tert-butyl methacrylate and of n-butyl methacrylate free-radical bulk homopolymerizations, Macromolecular Chemistry and Physics 2006, 207(18), 1640-1650.
• ♦ M. Buback, P. Vana, Mechanism of Dithiobenzoate-Mediated RAFT Polymerization: A Missing Reaction Step, Macromolecular Rapid Communications 2006, 27, 1299-1305.
• ♦ S. Beuermann, M. Buback, P. Hesse, T. Junkers, I. Lacík, Free-radical polymerization kinetics of 2-acrylamido-2-methylpropanesulfonic acid in aqueous solution, Macromolecules 2006, 39, 509-516.
• ♦ E. Süske, T. Scharf, H.-U. Krebs, E. Panchenko, T. Junkers, M. Egorov, M.Buback, H. Kijewski, Tuning of cross-linking and mechanical properties of laser deposited poly(methyl methacrylate) films, J. Appl. Phys. 2005, 97, 63501 (1-4).
• ♦ M. Buback, M. Egorov, T. Junkers, E. Panchenko, Termination kinetics of di-n-butyl itaconate free-radical polymerization studied via the SP-PLR-ESR technique, Macromol. Chem. Phys. 2005, 3, 333.
• ♦ A. Al-Amri, M. Monwar, E. McCord, M. Buback, H. Latz, P. L. Rinaldi, Characterization of Carbon Monoxide Centered Triads in Poly(ethylene-co-butyl acrylate-co-¹³C-carbon monoxide) by Isotopic Labeling and Two-Dimensional NMR, Macromol. Chem. Phys. 2005, 206, 1520-1529.
• ♦ T. Arita, S. Beuermann, M. Buback, P. Vana, RAFT Polymerization of Methyl Acrylate in Carbon Dioxide, Macromol. Mater. Eng. 2005, 290, 283-293.
• ♦ M. Buback, T. Junkers, P. Vana, Laser Single Pulse Initiated RAFT Polymerization for Assessing Chain-Length Dependent Radical Termination Kinetics, Macromol. Rapid Commun. 2005, 26, 796-802.
• ♦ T. Junkers, A. Theis, M. Buback, T.P. Davis, M. H. Stenzel, P. Vana, C. Barner-Kowollik, Chain-Length Dependent Termination in Butyl Acrylate Free-Radical Polymerization Studied via Stationary and Pulsed Laser Initiated RAFT Polymerization, Macromolecules 2005, 38, 9497-9508.
• ♦ T. Arita, M. Buback, P. Vana, Cumyl Dithiobenzoate Mediated RAFT Polymeri-zation of Styrene at High Temperatures, Macromolecules 2005, 38, 7935-7943.
• ♦ R. X. E. Willemse, A. van Herk, E. Panchenko, T. Junkers, M. Buback, PLP-ESR monitoring of mid-chain radicals in n-butyl acrylate polymerization, Macromolecules 2005, 38, 5098-5103.
• ♦ M. Drache, G. Schmidt-Naake, M. Buback, P. Vana, Modeling RAFT Polymerization Kinetics via Monte Carlo Methods: Cumyl Dithiobenzoate mediated Methyl Acrylate Polymerization, Polymer 2005, 46, 8483-8493. available online
• ♦ M. Buback, M. Kling, S. Schmatz, Decomposition of tertiary alkoxy radicals, Z. Phys. Chem. 2005, 219, 1-18.
• ♦ M. Monwar, S. J. Oh, P. L. Rinaldi, E. F. McCord, R. A. Hutchinson, M. Buback, H. Latz, Characterization of n-butyl acrylate centered triads in poly(n-butyl acrylate-co-carbon monoxide-co-ethylene) by isotopic labeling and two-dimensional NMR, Anal. and Bioanal. Chem. 2004, 378, 1414-1427.
• ♦ E. Süske, T. Scharf, P. Schaaf, E. Panchenko, D. Nelke, M. Buback, H. Kijewski, H.-U. Krebs, Variation of mechanical properties of pulsed laser deposited PMMA films during annealing, Appl. Phys. A 2004, 79, 1295-1297.
• ♦ T. Arita, S. Beuermann, M. Buback, P. Vana, Reversible Addition Fragmentation Chain Transfer (RAFT) Polymerization of Styrene in Fluid CO₂, e-Polymers 2004, 003, 1-14.
• ♦ F. Becker, M. Buback, H. Latz, G. Sadowski, F. Tumakaka, Cloud-point curves of ethylene-(meth)acrylate copolymers in fluid ethene up to high pressures and temperatures - experimental study and PC-SAFT modelling, Fluid Phase Equilibria 2004, 215, 263-282.
• ♦ M. Buback, M. Busch, Cloud Point Pressures of Ethene+Acrylate+Poly(ethene-co-acrylate) Systems, in: "Thermodynamic Properties of Complex Fluid Mixtures", DFG Research report, G. Maurer (ed.) Wiley-VCH 2004, , 451-471.
• ♦ J. M. Asua, S. Beuermann, M. Buback, P. Castignolles, B. Charleux, R. G. Gilbert, R. A. Hutchinson, J. R. Leiza, A. N. Nikitin, J.-P. Vairon, A. M. van Herk, Critically evaluated rate coefficients for free-radical polymerization, 5. Propagation rate coefficient for butyl acrylate, Macromol. Chem. Phys. 2004, 205(16), 2152-2160.
• ♦ I. Lacik, S. Beuermann, M. Buback, PLP-SEC Study into Free-Radical Propagation Rate Coefficients of Partially and Fully Ionized Acrylic Acid in Aqueous Solution, Macromol. Chem. Phys. 2004, 205, 1080-1087.
• ♦ T. Arita, M. Buback, O. Janssen, P. Vana, RAFT-Polymerization of Styrene up to High Pressure: Rate Enhancement and Improved Control, Macromol. Rapid Commun. 2004, 25, 1376-1381.
• ♦ M. Buback, M. Egorov, T. Junkers, E. Panchenko, Free-Radical Termination Kinetics Studied Using a Novel SP-PLP-ESR Technique, Macromol. Rapid Commun. 2004, 25, 1004-1009.
• ♦ M. Buback, M. Egorov, A. Feldermann, Chain-Length Dependence of Termination Rate Coefficients in Acrylate and Methacrylate Homopolymerizations Investigated via the SP-PLP-Technique, Macromolecules 2004, 37, 1768-1776.
• ♦ H.-U. Krebs, M. Störmer, J. Faupel, E. Süske, T. Scharf, C. Fuhse, N. Seibt, H. Kijewski, D. Nelke, E. Panchenko, M. Buback, Pulsed Laser Deposition (PLD) - a versatile thin film technique, Adv. Solid State Phys. 2003, 43, 505-517.
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• ♦ M. Buback, H. Latz, Cloud Point Pressure Curves of Ethene-Poly(Ethene-co-(Meth)Acrylic Acid) Mixtures, Macromol. Chem. Phys. 2003, 204, 638-645.
• ♦ I. Lacik, S. Beuermann, M. Buback, PLP-SEC study into free-radical propagation rate of non-ionized acrylic acid in aqueous solution, Macromolecules 2003, 36, 9355-9363.
• ♦ M. Monwar, S. K. Sahoo, P. L. Rinaldi, E. F. McCord, D. R. Marshall, M. Buback, H. Latz, A 3D-NMR Method for Studying Hydrocarbon-Based Polymer Structures, Macromolecules 2003, 36, 6695-6697.
• ♦ M. Buback, H. Dietzsch, High-pressure free-radical copolymerization of ethene and methyl methacrylate, Macromol. Chem. Phys. 2001, 7, 1173-1181.
• ♦ I. Lacik, S. Beuermann, M. Buback, Aqueous phase size-exclusion chromatography used for PLP-SEC studies into free-radical propagation rate of acrylic acid in aqueous solution, Macromolecules 2001, 34, 6224-6228.
• ♦ M. Buback, L. Wittkowski, High-pressure free-radical copolymerization of ethene with methacrylic acid and ethene with acrylic acid - II. Ethene reactivity ratios, Macromol. Chem. Phys. 2000, 201, 419-426.

• Talk: Jan 27 2010 Synthesis reactions of polymers (Introductory Lecture WS 2009/2010 - Polymer Coils)
• Talk: Dec 12 2007 Synthesis reactions of polymers II (Introductory Lecture WS 2007/2008 - Polymer Coils)
• Talk: Nov 28 2007 Synthesis reactions of polymers I (Introductory Lecture WS 2007/2008 - Polymer Coils)
• Talk: Jan 24 2006 Maßgeschneiderte makromolekulare Materialien (Other Events WS2005/2006)
• Talk: Nov 30 2005 Synthesis reactions of polymers II (Introductory Lecture WS 2005/2006 - Polymer Coils)
• Talk: Nov 23 2005 Synthesis reactions of polymers I (Introductory Lecture WS 2005/2006 - Polymer Coils)
• Talk: Oct 29 2003 Synthesereaktionen von Makromolekülen (Introductory Lecture WS 2003/2004)
• Talk: Jun 26 2002 Vibrational spectroscopy in supercritical fluids (Introductory Lecture SS 2002)