Regensburg 2004 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

CPP: Chemische Physik und Polymerphysik

CPP 15: POSTER: Polymers and Biomaterials

CPP 15.5: Poster

Dienstag, 9. März 2004, 17:00–19:00, B

Chemical Modification of microphase-separated Triblock Terpolymer Films — •Kristin Schmidt, Sabine Ludwigs, Andrej Voronv, Robert Magerle, and Georg Krausch — Physikalische Chemie II, Universität Bayreuth, Bayreuth, Germany

In this presentation we discuss a polystyrene-b-poly(2-vinylpyridine)-b-poly(tertbutylme thacrylate) triblock terpolymer (SVT) exhibiting a core-shell cylinder structure in bulk (φ_PS=0.16, φ_P2VP=0.21, φ_PtBMA=0.63, M_w=140 k, M_w/M_n=1.02) which was synthesized via sequential living anionic polymerization¹.

After annealing in controlled solvent vapour atmosphere thin films of these triblock terpolymer self-assemble into a highly ordered perforated lamellae structure with PS-core and a P2VP-shell in the PtBMA matrix phase.

A chemical modification of the poly(tertbutylmethacrylate) matrix phase to poly(methacrylic acid) via acid-catalyzed saponification leads to a pH-responsive nanostructure which was investigated with scanning force microscopy in aqueous environment. Furthermore, we show that the perforated lamella might serve as a lithographic mask by selective UV-depolymerization of the poly(tertbutylmethacrylate) matrix phase².

¹ Ludwigs, S.; Böker, A.; Abetz, V.; Müller, A.H.E.; Krausch, G. Polymer 2003, 44, 6815

² Ludwigs, S.; Böker, A.; Voronov, A.; Rehse, N.; Magerle, R.; Krausch, G. Nature Materials 2003, 2, 744