Please use this identifier to cite or link to this item:

TitleBiomimetic apatite deposition on polymeric microspheres treated with a calcium silicate solution
Author(s)Leonor, I. B.
Balas, F.
Kawashita, M.
Reis, R. L.
Kokubo, T.
Nakamura, T.
Calcium silicate
Polymeric microspheres
Silanol (Si-OH)
Sol-gel processes
Issue date2009
JournalJournal of Biomedical Materials Research Part B: Applied Biomaterials
Abstract(s)Bioactive polymeric microspheres can be prepared by means of coating them with a calcium silicate solution and subsequently soaking in a simulated body fluid (SBF). Such combination should allow for the development of bioactive microspheres for several applications in the medical field including tissue engineering carriers. Four types of polymeric microspheres, with different sizes, were used in this work: (i) ethylene-vinyl alcohol copolymer (20–30 µm), (ii) polyamide 12 with 10% magnetite (100 µm), (iii) polyamide 12 (10–30 µm) and (iv) polyamide 12 (300 µm). These microspheres were soaked in a calcium silicate solution at 36.58C for various periods of time under different conditions. Afterwards, they were dried in air at 60 and 100ºC for 24 hr. Then, the samples were soaked in SBF for 1, 3, and 7 days. Fourier transformed infrared spectroscopy, thin-film X-ray diffraction, and scanning electron microscopy showed that after the calcium silicate treatment and the subsequent soaking in SBF, the microspheres successfully formed an apatite layer on their surfaces in SBF within 7 days due to the formation of silanol groups, which are effective for apatite formation.
AccessOpen access
Appears in Collections:3B’s - Artigos em revistas/Papers in scientific journals

Files in This Item:
File Description SizeFormat 
file.pdf495,83 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID