Dresden 2011 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 9: Poster: Biopolymers and Biomaterials

CPP 9.2: Poster

Montag, 14. März 2011, 17:30–19:30, P2

Surface characterization of cellulose films and pulp by atomic force microscopy — •Christian Ganser^1,3, Oliver Miskovic^1,3, Franz Schmied^1,3, Robert Schennach^2,3, and Christian Teichert^1,3 — ¹Institute of Physics, University of Leoben, Franz Josef Straße 18, 8700 Leoben, Austria — ²Institute of Solid State Physics, Graz University of Technology, Petersgasse 16/2, 8010 Graz, Austria — ³CD-Laboratory for Surface Chemical and Physical Fundamentals of Paper Strength, Graz University of Technology, Petersgasse 16/2, 8010 Graz

To obtain a deeper insight into the binding mechanisms of pulp fibers in a fiber network, an atomic force microscopy (AFM) investigation was performed on cellulose films and single pulp fibers. A chemical modification of cellulose films via spincoating of hemicellulose was performed to modify the binding strength. A comprehensive roughness characterization after spincoating revealed the morphological influence.

Further, the morphology under wet and ambient conditions was investigated to follow the drying process of the pulp fibers during the production cycle on a paper machine. Here, the swelling and dewetting of single pulp fibers is studied to simulate such a cycle and to monitor morphological changes.

Supported by Mondi and the Christian Doppler Research Society, Vienna, Austria.