Regular maize starch (contained 27 wt% amylose and 73 wt% amylopectin) and PHB-HV blend films were prepared by a conventional solution-casting technique. The blends of PHB-HV/regular corn starch in different ratios (wt/wt) (100/0, 80/20, 70/30, 60/40 and 50/50), were prepared from 5% (wt/vol) chloroform solutions. Sample solutions were produced at 60 °C, which was lower than the chloroform boiling point (61.2 °C), for 1 h under constant stirring on a magnetic stirrer-hotplate. The blends in the form of thin films (15–20 μm) were obtained by pouring the solution onto a glass Petri dish (70 mm diameter) as a casting surface, allowing the solvent to evaporate on a flat surface at room temperature overnight
Regular maize starch (contained 27 wt% amylose and 73 wt% amylopectin) and PHB-HV blend films were prepared by a conventional solution-casting technique. The blends of PHB-HV/regular corn starch in different ratios (wt/wt) (100/0, 80/20, 70/30, 60/40 and 50/50), were prepared from 5% (wt/vol) chloroform solutions. Sample solutions were produced at 60 °C, which was lower than the chloroform boiling point (61.2 °C), for 1 h under constant stirring on a magnetic stirrer-hotplate. The blends in the form of thin films (15–20 μm) were obtained by pouring the solution onto a glass Petri dish (70 mm diameter) as a casting surface, allowing the solvent to evaporate on a flat surface at room temperature overnight
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