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

Autor(es)

Ferreira, B. M. P. ; Pinheiro, L. M. P. ; Nascente, P. A. P. ; Ferreira, M. J. ; Duek, E. A. R.

• Tipo de documento: Artigo Científico
• Fonte: Materials Science & Engineering C-Materials for Biological Applications; v. 29, n. 3, p. 8-pg., 2009-04-30.

Resumo

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. (C) 2008 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 03/02188-5 - Estudo da modificação da superfície dos polímeros PLLA e PHBV por plasma para uso como biomateriais
• Beneficiário: Betina Mara Pereira Ferreira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado