1. Biobased Products, Agrotechnology & Food Sciences Group, Wageningen UR, Bornsesteeg 59, 6708 PD Wageningen, The Netherlands, Laboratory of Physical Chemistry and Colloid Science, Agrotechnology & Food Sciences Group, Wageningen UR, Dreijenplein 6, 6703 HB Wageningen, The Netherlands, Dutch Polymer Institute (DPI), John F. Kennedylaan 2; 5612 AB, Eindhoven, The Netherlands, and European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP 220, 38043 Grenoble, Cedex 9, France