Native corn starch Meritena® 100 was provided by Brenntag (Bratislava, Slovakia). Its water content was around 12 wt% as determined by drying in the oven at 100 °C for 5 h. Poly(butylene adipate–co–terephthalate) (PBAT), grade Ecoworld™ 003 with MFI < 5 (according to DIN ISO 1133 [38 ] at 190 °C and 2.16 kg), was supplied by Jinhui Zhaolong Co. (Shanxi Xiaoyi, China). Natrified montmorillonite (Cloisite® Na+) with a cationic exchange capacity range of 80–95 mequiv/100 g was purchased from Southern Clay Products (Gonzales, TX, USA). Glycerol was obtained from Centralchem, Ltd. (Bratislava, Slovakia). Double distilled water was used for the preparation of all solutions.
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