ABSTRACT
18 In this work, flexible PVC foam films were prepared using azodicarbonamid (ADC) as chemical bowing agent and zinc oxide (ZnO) catalyst in polyvinyl chloride (PVC) plastisols. Zinc stearate and calcium stearate were added as thermal stabilizers for PVC. ZnSt2 and CaSt2were added to PVC as thermal stabilizers to plastisol. Foaming and gelation of the films occur simultaneously during heating the plastisols. The optimum ZnO and ADC concentration were analyzed by 23 experimental design by selecting density as the response. Design equation of density gives time as the main factor. On the other hand, design equation of induction time gives ZnO amount as the main factor.
