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Journal of Polymers and the Environment
Vol. 18, No.
1, 2010; Pages: 79 - 83

Morphological changes in poly(caprolactone)/poly(vinyl chloride) blends caused by biodegradation

Sandra M. Martins-Franchetti, T. A. Egerton, J. R. White


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.

Keywords:Biodegradation; X-ray; Fungi; PCL; PVC.


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