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Morphological Changes in Poly(Caprolactone)/Poly(Vinyl Chloride) Blends Caused by Biodegradation

Author:
Martins-Franchetti, Sandra M., Egerton, T. A., White, J. R.
Source:
Journal of polymers and the environment 2010 v.18 no.1 pp. 79-83
ISSN:
1566-2543
Subject:
Curvularia, Phanerochaete chrysosporium, biodegradation, crystals, poly(vinyl chloride)
Abstract:
The biodegradation of blends of poly(caprolactone) (PCL) and poly(vinyl chloride) (PVC) has been studied. Blends of composition PCL/PVC 1:1 and 1:2 w/w were tested. The 1:1 blend contained crystals in the as-cast state and became more crystalline on exposure to different bio-active agents. The 1:2 blend was amorphous in the as-cast state but developed a significant crystal component after 4 months exposure to the bio-agents. Three bio-active agents were used and all were found to produce qualitatively similar behaviour but their activity was somewhat different. For both the 1:1 blend and the 1:2 blend the ranking of the three bio-active agents tested, in increasing order, was Curvularia sp.; Trogia buccinalis; Phanerochaete chrysosporium.
Agid:
2265334