Biodegradation of Poly(vinyl alcohol) and Bacterial Cellulose Composites by Aspergillus niger
- 477 Downloads
The ability of fungal strains to attack a composite material obtained from poly(vinyl alcohol) (PVA) and bacterial cellulose (BC) is investigated. The fungal strain tested was Aspergillus niger. This fungal strain was able to change not only the polymer surface from smoother to rougher, but also to disrupt the polymer. The degradation results were confirmed by visual observations, scanning electron microscopy (SEM) analyses, X-ray diffraction analyses and FTIR spectra of the film samples. SEM micrographs confirmed the growth of fungi on the composite film surface. The degree of microbial degradation depends on culture medium and on composition of polymeric materials, especially on PVA content. The biodegradation process is accelerated by the presence of glucose in the culture medium as an easily available carbon source.
KeywordsBiodegradation Bacterial cellulose Poly(vinyl alcohol) SEM analysis Fungi Aspergillus niger
This study was supported by the project PNCDI II 32-115, financed by National Center for Programme Management (CNMP), Romania. Authors recognize also financial support from the European Social Fund through POSDRU/89/1.5/S/54785 project: “Postdoctoral Program for Advanced Research in the field of nanomaterials”.
- 1.Fomin VA, Guzeev VV (2001) Prog Rubb Plastics Tech 17:186Google Scholar
- 9.Klemm D, Schumann D, Udhardt U, Marsch S (2001) Prog Polym Sci 126:156Google Scholar
- 18.Upreti MC, Srivastava RB (2003) Curr Sci 84:1399Google Scholar
- 31.Klemenčič D, Simončič B, Tomšič B, Orel B (2010) Carbohydr Polym 80:427Google Scholar