Robert Rotzoll (2008 -)

+49 - 551 - 39 3138 e-mail homepage (http://www.fpm.chemie.uni-goettingen.de/image-viewer_robert.htm) Georg-August-Universität Göttingen Institut für Physikalische Chemie Tammannstrasse 6 37077 Göttingen Germany

• Reversible addition-fragmentation chain transfer polymerization
• Mechanical properties of polymers
• Surface-initiated polymerizations

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Surface-initiated polymerizations are of great interest as they enable the formation of grafted polymer layers and tailored composite materials. By applying the well established pulsed laser polymerization-size exclusion chromatography (PLP-SEC) technique, one can directly determine the propagation rate coefficients kp from the inflection points of the resulting SEC trace of the grafted polymer. The image shows the SEC trace from the PLP of styrene at 26°C and 5 Hz together with the proposed reaction mechanism.

PCGG activities

Cooperation(s):

• Samwer - group (Mechanical analysis of polymers synthesized via RAFT polymerization)
• Buback - group (Polymerization kinetics)
• Krebs - group (SEC analysis of polymer films, scanning electron microscopy of nanocomposites)

• Projekt week in the Samwer group: Dynamic Mechanical Analysis of Poly(tert.-Butyl Acrylate-co-Acrylic Acid) Copolymers Synthesized via Reversible Addition-Fragmentation Chain Transfer Polymerization

• ♦ B. Fuchs, F. Schlenkrich, S. Seyffarth, A. Meschede, R. Rotzoll, P. Vana, P. Großmann, K. Mann, H.-U. Krebs, Hardening of smooth pulsed laser deposited PMMA films during heating, Applied Physics A 2010, 98, 711-715.
• ♦ M. Schwabe, R. Rotzoll, S. Küchemann, K. Nadimpalli, P. Vana, K. Samwer, Relaxation processes of poly(tert.-butyl acrylate) chemically confined via hydrogen bonds, Macromol. Chem. Phys. 2010, 211, 1673-1677.
• ♦ R. Rotzoll, P. Vana, A Bipedal Silica-Immobilized Azo-Initiator for Surface-Confined Radical Polymerizations, Australian Journal of Chemistry 2009, 62, 1473-1478.
• ♦ R. Rotzoll, D.H. Nguyen, P. Vana, Trithiocarbonates Containing Trimethoxysilyl Functionalities as Mediating Agents in Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization of Methyl Acrylate, Macromol. Symp. 2009, 275-276, 1-12.
• ♦ R. Rotzoll, P. Vana, Surface-Initiated PLP-SEC of Butyl Acrylate and Styrene from Silica Nanoparticles, Macromolecular Rapid Communications 2009, 30, 1989-1994.
• ♦ R. Rotzoll, P. Vana, Synthesis of Poly(Methyl Acrylate) Loops Grafted onto Silica Nanoparticles via Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization, J Polym Sci Part A 2008, 46, 7656-7666.

• Talk: Sept 29 2010 TBA (16th Workshop)
• Poster: Jul 15 2010 Surface-Initiated PLP-SEC From Silica Nanoparticles (MACRO 2010 World Polymer Congress, Glasgow, UK)
• Organization: April 09 2010 Co-organization of the 15th Workshop, Göttingen
• Poster: April 08 2010 Surface-Initiated PLP-SEC From Silica Nanoparticles (15th Workshop)
• Poster: Sept 17 2009 Mechanical properties of polymers synthesized via controlled radical polymerization (Controlled Radical Polymerization Meeting, Houffalize, Belgium)
• Poster: Sept 12 2009 Mechanical properties of polymers synthesized via controlled radical polymerization (14th Workshop)
• Talk: Jul 03 2009 Die Untersuchung der Propagationskinetik oberflächeninitiierter radikalischer Polymerisationen mittels der PLP-SEC-Methode (3. Göttinger Chemie-Forum)
• Organization: April 22 2009 Host student of Prof. Binder
• Organization: April 02 2009 Co-organization of the 13th Workshop, Göttingen
• Talk: April 02 2009 A novel silica-immobilized azo-initiator for probing the kinetics of surface-initiated polymerizations (13th Workshop)
• Poster: April 02 2009 A novel silica-immobilized azo-initiator for producing surface-confined poly(methyl acrylate) (13th Workshop)
• Poster: Feb 05 2009 A Novel Silica-Immobilized Azo-Initiator for Producing Surface-Confined Poly(Methyl Acrylate) (Zing Polymer Chemistry Conference at Playa del Carmen, Mexico)
• Poster: Feb 05 2009 Surface-bound Polymer Loops via RAFT Polymerization (Zing Polymer Chemistry Conference at Playa del Carmen, Mexico)
• Talk: Oct 23 2008 Oberflächengebundene Polymerschlaufen durch RAFT-Polymerisation (Physikalisch-Chemisches Kolloquium)
• Poster: Sept 16 2008 Surface-bound Polymer Loops via RAFT-Polymerization (Joint Workshop of the "Physical & Chemical Graduate School Göttingen" and the "Dahlem Research School of Molecular Science" (12th Workshop))
• Talk: Jul 23 2008 Surface-bound polymer loops via RAFT-Polymerization (Seminar SS 2008)