Manufacture of Plastics Film Containing of Polystirene, Polycaprolactone, Poly(3-Hidroksibutyrate-Co-3- Hidroxyvalerate) and Biodegradation Study in Ocean Water

Abstract

The manufacture of a biodegradable plastics film containing of polymer synthetic polystyrene (PS) and biopolymer of polycaprolactone (PCL), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-ko-3HV)] and biodegradation study in ocean water has been carried out. Plastics film containing of PS/PCL/P(3HB-ko-3HV) produced by blending techniques followed by solvent casting with ratios were of 100/0/0, 95/5/0, 95/0/5, 90/5/5, 85/10/5, 85/5/10. This testing was conducted based on immersion test method recommend by American Society for Testing and Materials. Poly blend plastics film PS/PCL/P(3HB-ko-3HV) were characterized by tensile strength, thermal properties and SEM analysis. The profiles of the rate biodegradation view by weight reduction of the tested plastic film for 1-7 weeks period. Tensile strength analysis showed the decreasing of tensile strength with the addition of P(3HB-ko-3HV). Thermal analysis showed a decreasing in the melting point with the addition of PCL and P(3HB-co-3HV). SEM micrograph showed the destruction occurred and erosion at surface of plastic film during observation time. The rate of biodegradation showed that increasing of PCL and P (3HB-co-3HV) in a mixture of plastic film, so biodegradation increased.

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