Rheological experiments were performed using an Anton Paar (Ostfildern, Germany) Physica MCR 301 utilizing a plate-plate geometry (diameter 25 mm) in oscillating shear mode with a swollen polymer discs (1mm × 25 mm). All experiments were performed in the linear viscoelastic region, which was determined by a prior amplitude sweep. All samples used for rheology were washed and swollen for 24 h. Oscillatory measurements were performed at a frequency range (ω) from 0.01 to 650 rad/s at an applied amplitude of 0.1 %.