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Sökning: WFRF:(Arifin H)

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  • Joyyi, Lee, et al. (författare)
  • Composite properties and biodegradation of biologically recovered P(3HB-co-3HHx) reinforced with short kenaf fibers
  • 2017
  • Ingår i: Polymer Degradation and Stability. - : Elsevier BV. - 0141-3910. ; 137, s. 100-108
  • Tidskriftsartikel (refereegranskat)abstract
    • A compression-molded green composite material comprising of bacterially synthesized poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [P(3HB-co-3HHx)] and short kenaf fibers (KF) was prepared in the present study. Accordingly, P(3HB-co-3HHx) was produced by the Cupriavidus necator Re2058/pCB113 using the palm oil as the sole carbon source, while the polyhydroxyalkanoate (PHA) copolymer with ∼99% purity was recovered from the bacterial cells using a newly reported solvent-free biological recovery method. Experimental results showed that P(3HB-co-3HHx) containing 30 wt % KF possessed the highest flexural strength and similar or better comparable mechanical performance compared to that of the low density polyethylene (LDPE), LDPE/KF composites and high density polyethylene (HDPE). Water absorption and soil burial tests were also performed to evaluate the durability of the P(3HB-co-3HHx)/KF composites. As compared to that of the pristine P(3HB-co-3HHx), it was determined that P(3HB-co-3HHx)/KF composites demonstrated higher water absorption percentage and showed higher percentage of weight loss during the soil degradation study. Burkholderia sp., Streptomyces sp., Amycolatopsis sp. and Streptacidiphilus sp. that involved in the biodegradation of P(3HB-co-3HHx)/KF composites during the soil degradation study were successfully isolated and characterized. These species had the capability to degrade the composite material in vitro.
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