Plasma surface treatments of poly( l-lactic acid) (PLLA) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV)

The surfaces of poly( l-lactic acid) (PLLA) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) were modified by oxygen and nitrogen plasma treatments. The physical and chemical surface characteristics were evaluated by contact angle tests, scanning electron microscopy (SEM), atomic force microscopy...

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Bibliographic Details
Published in:Materials Science & Engineering C 2009-04, Vol.29 (3), p.806-813
Main Authors: Ferreira, B.M.P., Pinheiro, L.M.P., Nascente, P.A.P., Ferreira, M.J., Duek, E.A.R.
Format: Article
Language:English
Subjects:
Hydrophilicity
PHBV
Plasma treatment
PLLA
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Summary:The surfaces of poly( l-lactic acid) (PLLA) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) were modified by oxygen and nitrogen plasma treatments. The physical and chemical surface characteristics were evaluated by contact angle tests, scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). The plasma treatments caused an increase in both contact angle and roughening, altered the surface morphology, inserted polar groups, and, consequently, enhanced the hydrophilicity for both PLLA and PHBV polymers.
ISSN:0928-4931
1873-0191
DOI:10.1016/j.msec.2008.07.026