1. Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
2. XiMo AG, Altsagenstr. 3, CH-6048 Horw/Lucerne, Switzerland
3. German Institutes
of Textile and Fiber Research (DITF) Denkendorf, Körschtalstr. 26, D-73770 Denkendorf, Germany