1. Aachen-Maastricht Institute for Biobased Materials, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
2. European Synchrotron Radiation Facility (ESRF), DUBBLE-CRG, FR-38043 Grenoble Cedex, France
3. Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, E36310 Vigo, Galicia, Spain
4. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
5. King Abdullah University of Science and Technology, 4700 KAUST, Thuwal 23955-6900, Saudi Arabia