Release Studies of Thymol and p-Cymene from Polylactide Microcapsules

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Isabel M. Martins (Autor) Outra; Rodrigues, SN (Autor) Outra; Barreiro, MF (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Industrial & Engineering Chemistry Research

Vol. 51

Páginas: 11565-11571

ISSN: 0888-5885

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 14 Citações

Outras Informações

ID Authenticus: P-002-5JD

DOI: 10.1021/ie301406f

Abstract (EN): The objective of this work is to access the release behavior of thymol and p-cymene used as model core materials with PLA microcapsules. The microcapsules were obtained by a coacervation process developed in a previous work and present a spherical shape with mean particle size of 25 and 37 mu m for thymol and p-cymene, respectively. The results have shown that the release of thymol and p-cymene is faster in the first hour keeping almost constant in the subsequent days. The diffusion coefficient in the first hour of release was 1.99 X 10(-16) m(2)/s for thymol and 4.34 X 10(-16) m(2)/s for p-cymene. However, the diffusion was slower if considering a period of 5 days being the diffusion coefficients of 3.34 X 10(-19) m(2)/s for thymol and 3.45 X 10(-18) m(2)/s for cymene.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7