Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/85825
Type: Artigo de periódico
Title: Apatite Bone Cement Reinforced With Calcium Silicate Fibers
Author: Motisuke M.
Santos V.R.
Bazanini N.C.
Bertran C.A.
Abstract: Several research efforts have been made in the attempt to reinforce calcium phosphate cements (CPCs) with polymeric and carbon fibers. Due to their low compatibility with the cement matrix, results were not satisfactory. In this context, calcium silicate fibers (CaSiO3) may be an alternative material to overcome the main drawback of reinforced CPCs since, despite of their good mechanical properties, they may interact chemically with the CPC matrix. In this work CaSiO3 fibers, with aspect ratio of 9.6, were synthesized by a reactive molten salt synthesis and used as reinforcement in apatite cement. 5 wt.% of reinforcement addition has increased the compressive strength of the CPC by 250 % (from 14.5 to 50.4 MPa) without preventing the cement to set. Ca and Si release in samples containing fibers could be explained by CaSiO3 partial hydrolysis which leads to a quick increase in Ca concentration and in silica gel precipitation. The latter may be responsible for apatite precipitation in needle like form during cement setting reaction. The material developed presents potential properties to be employed in bone repair treatment.
Editor: Kluwer Academic Publishers
Rights: fechado
Identifier DOI: 10.1007/s10856-014-5280-7
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84918798341&partnerID=40&md5=96526c5b7272441c52e5b451e9ee5b29
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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