Morphological Changes in Poly(Caprolactone)/Poly(Vinyl Chloride) Blends Caused by Biodegradation |
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| Authors: | Sandra M Martins-Franchetti T A Egerton J R White |
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| Institution: | 1.Department of Biochemistry and Microbiology,University State “Júlio de Mesquita Filho” (UNESP),Rio Claro,Brazil;2.School of Chemical Engineering and Advanced Materials,University of Newcastle,Newcastle Upon Tyne,UK |
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| 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. |
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