Detail publikace

Mechanical reinforcement of Bioglass (R)-based scaffolds by novel polyvinyl-alcohol/microfibrillated cellulose composite coating

Originální název

Mechanical reinforcement of Bioglass (R)-based scaffolds by novel polyvinyl-alcohol/microfibrillated cellulose composite coating

Anglický název

Mechanical reinforcement of Bioglass (R)-based scaffolds by novel polyvinyl-alcohol/microfibrillated cellulose composite coating

Jazyk

en

Originální abstrakt

The preparation and mechanical properties of Bioglasss-based porous scaffolds reinforced by a composite coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC) are investigated. Samples produced by foam replication process and having nominally 90% of open porosity were coated by dipping into an aqueous solution of PVA and MFC. Tensile tests were conducted on samples according to a new testing methodology optimized for highly porous ceramics. The addition of PVA/MFC coating led to a 10 fold increase of the tensile strength of scaffolds. The reinforcing and toughening effect of the composite coating due to crack bridging and fracture of cellulose fibrils embedded in the PVA matrix was proved by SEM observations.

Anglický abstrakt

The preparation and mechanical properties of Bioglasss-based porous scaffolds reinforced by a composite coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC) are investigated. Samples produced by foam replication process and having nominally 90% of open porosity were coated by dipping into an aqueous solution of PVA and MFC. Tensile tests were conducted on samples according to a new testing methodology optimized for highly porous ceramics. The addition of PVA/MFC coating led to a 10 fold increase of the tensile strength of scaffolds. The reinforcing and toughening effect of the composite coating due to crack bridging and fracture of cellulose fibrils embedded in the PVA matrix was proved by SEM observations.

BibTex


@article{BUT113324,
  author="Luca {Bertolla} and Ivo {Dlouhý} and Anahi {Philippart} and Aldo {Boccaccini}",
  title="Mechanical reinforcement of Bioglass (R)-based scaffolds by novel polyvinyl-alcohol/microfibrillated cellulose composite coating",
  annote="The preparation and mechanical properties of Bioglasss-based porous scaffolds reinforced by a
composite coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC) are
investigated. Samples produced by foam replication process and having nominally 90% of open porosity
were coated by dipping into an aqueous solution of PVA and MFC. Tensile tests were conducted on
samples according to a new testing methodology optimized for highly porous ceramics. The addition of
PVA/MFC coating led to a 10 fold increase of the tensile strength of scaffolds. The reinforcing and
toughening effect of the composite coating due to crack bridging and fracture of cellulose fibrils
embedded in the PVA matrix was proved by SEM observations.",
  address="Elsevier",
  chapter="113324",
  doi="10.1016/j.matlet.2013.12.079",
  institution="Elsevier",
  number="3",
  volume="118",
  year="2014",
  month="march",
  pages="204--207",
  publisher="Elsevier",
  type="journal article in Web of Science"
}