The composite films were successfully prepared by using a
blown film extruder at five ZnO contents ranging from 2 to
10 wt%.
With the presence of ZnO, PBS was stiffer while the tear strength was lower than the film without ZnO.
Minimum ZnO content required to inhibit the E. coli and the S. aureus growths were 6 wt% with the clear zone of 1.31 and 1.25 cm respectively.
Thermal test results indicated the increased Xc and the decreased Tc while Tm remain unchanged.
Loss modulus curves informed the reduction of Tg. Release test indicated that Zn2+ migrated over
15 days studied while the maximum migration was observed when acetic acid was used as a food simulant.