Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 159, Issue -, Pages 539-546Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.05.107
Keywords
Polylactide; Poly (3,4-hydroxybutyrate); Poly(epsilon-caprolactone); Biodegradation
Funding
- Nicolaus Copernicus University in Torun (Torun Poland)
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Biodegradable materials, namely pure polylactide (PLA), poly (3,4-hydroxybutyrate) (PHB), poly(epsilon caprolactone) (PCL) were investigated to assess their degradability by activated sludge. The study aimed at the isolation of biofilm-forming bacteria and the determination of their hydrolytic activity toward the PLA, PHB, and PCL with embedded PHMG derivatives. The biological oxygen demand and physical properties (tensile strength, water vapor permeability, surface structure) of materials indicated that PCL was the best biodegradable film. Aeromonas and Rhodococcus isolated from the polymers' surface during the process of decomposition showed the ability to form biofilms. The introduction of PHMG derivatives into PLA, PCL, and PHB films did not affect biofilm formation and hydrolase activity for most of the isolates. PHMG derivatives at the concentration of 1% disturbed the degradation process. (C) 2020 Elsevier B.V. All rights reserved.
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