Dresden 2014 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 54: Poster Session 3
CPP 54.61: Poster
Donnerstag, 3. April 2014, 15:00–19:00, P2
Vulcanized fiber studied by x-ray diffraction — •Karin Rüster1, Dominik Dumke2, Michael Paulus1, Christian Sternemann1, Julia Nase1, Johannes Möller1, Kolja Mende1, Irena Kiesel1, Dorothee Wieczorek2, and Metin Tolan1 — 1Fakultät Physik / DELTA, Technische Universität Dortmund, D-44221 Dortmund, Germany — 2Fakultät Maschinenbau, Technische Universität Dortmund, D-44221 Dortmund, Germany
Vulcanized fiber is a material of various applications, for example it is used as an insulator in the electrical industry or in welding shields. As it is made from renewable resources, it gained increasing interest in recent years. There are two ways to produce vulcanized fiber: mercerisation and parchmentising. The raw paper is soaked with alkaline (mercerisation) or acidic solution (parchmentising) respectively, pressed to interconnect the layers, rested for a certain time, and washed out in steps of descending concentrations. During this process the material’s properties change. The material becomes harder, stiffer, and thicker due to multiple layering and structural changes. The corresponding microscopic mechanisms are analysed by x-ray diffraction (XRD).The raw paper consists mostly of cellulose Iα and Iβ, which transforms to cellulose II during the process of mercerisation. The structural changes during the process of parchmentising by zinc chloride were examined. The experiment was performed at beamline BL9 of the synchrotron light source Delta, Dortmund.