2.2. Preparation of pellets
A co-rotating twin-screw extruder model ZSE 27HP-PH
equipped with a die-face pelletizer model Leistritz Micro Pelletiser
LMP (Leistritz Extrusionstechnik GmbH, Nuremberg, Germany)
was used for HME (Fig. 1). A gravimetrical dosing unit K-SFS-24 (K-
Tron AG, Niederflenz, Switzerland