Composition Batches
Two main production batches of film were produced for all testing. Each main batch was
produced on one day under same conditions. All batches contained 9% starch. The
ultrasonification batch contained a consistent amount of 5% clay and 25% plasticizer.
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The influence of different ultrasonification times of the clay on film properties was
determined. The ultrasonification batch produced six separate batches that yielded five
cast films per batch, for a total of 30 films (Table 12).
Table 12: Ultrasonification Batch Identification