SEC was performed on a PSS SECcurity2 GPC-System with AGILENT infinity 1260 II hardware. The system used a refractive index detector and tetrahydrofuran with a 1 mL/min flow rate at 30 °C as mobile phase. The measurements were performed with the following column system: PSS SDV analytical (3 μm, 300 x 8,0 mm 2 , 1000 Å) and a PSS SDV analytical precolumn (3 μm, 50 x 8,0 mm 2 ).