• 文献标题:   Bioactivity of flexible graphene composites coated with a CaSiO3/acrylic polymer membrane
  • 文献类型:   Article
  • 作  者:   GOMEZSOLIS C, MTZENRIQUEZ AI, OLIVA AI, ROSILLODE LA TORRE A, OLIVA J
  • 作者关键词:   calcium silicate, graphene composite, bioactivity, biocompatible coating
  • 出版物名称:   MATERIALS CHEMISTRY PHYSICS
  • ISSN:   0254-0584 EI 1879-3312
  • 通讯作者地址:   Inst Potosino Invest Cient Tecnol AC
  • 被引频次:   3
  • DOI:   10.1016/j.matchemphys.2019.122358
  • 出版年:   2020

▎ 摘  要

Nowadays, flexible, mechanically strong and lighter biocompatible composites are required to substitute the heavy metal implants which can cause allergic reactions or tissue rejection In humans. Therefore, this work reports the deposition of a polymer bioactive membrane formed by a mixture of CaSiO3 microparticles (CSOMPs) and an acrylic polymer (AP), on flexible graphene composites (FGCs) by using a hot pressing method. According to the mechanical tests, the (CSO-MPs + AP)/FGC composite has an elastic modulus approximate to 107% higher than the bare FGC. In addition, the (CSO-MPs + AP)/FGC composite was immersed into a simulated body fluid (SBF) solution for 21 days. As result, a layer of biocompatible hydroxyapatite was formed on it. The high bioactivity of the CSO-MPs + AP membrane was promoted by the carboxylic and OH groups formed on its surface as well as by the high porosity of the CSO-MPs. The bioactivity, high mechanical and electrical conductivity properties of the proposed composite, suggest its use as a biosensor of human biological substances or as a biomaterial to favor the osteo-integration in dental implants.