Effect of plasticizers on melt processability and properties of PHB

摘要

Some results regarding plasticization of poly(3-hydroxybutyrate) (PHB) using triethyl citrate (TEC), acetyl o-tributyl citrate (ATBC) and tributyl citrate (TBC) are presented. The blends were obtained by melt mixing procedure on a Brabender Plastograph at a temperature of 180 degrees C, rotor speed of 60 rpm and mixing time of 6 minutes. The amounts of plasticizers varied from 10 wt.% to 30 wt.% relative to PHB. The effect of plasticizer content on the melt viscosity, thermal properties (DSC), spectral characteristics (ATR-FTIR), tensile properties and water permeability was investigated in order to improve the processability and properties of PHB.