2.2. Preparation of films
Carrageenan films were prepared by a solution casting method.
Three grams of carrageenan powder was dissolved in 150 mL distilled
water with 0.9 g of glycerol as plasticizer while mixing vigorously for
about 20 min at 95 °C using a magnetic stirrer and cast evenly onto a
leveled Teflon film(Cole-Parmer Instrument Co., Chicago, IL, USA) coated
glass plate (24 × 30 cm), then dried for about 24 h at room temperature.
Carrageenan/Cloisite® 30B nanocomposite films were prepared
using a solution intercalation method (Rhimet al., 2011).