Publication result detail

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

BERTOLLA, L.; DLOUHÝ, I.; PHILIPPART, A.; BOCCACCINI, A.

Original Title

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

English Title

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

Type

WoS Article

Original Abstract

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.

English abstract

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.

Keywords

bioglass scaffolds, tensile test, polymer coating, ceramic foams

Key words in English

bioglass scaffolds, tensile test, polymer coating, ceramic foams

Authors

BERTOLLA, L.; DLOUHÝ, I.; PHILIPPART, A.; BOCCACCINI, A.

RIV year

2015

Released

01.03.2014

Publisher

Elsevier

ISBN

0167-577X

Periodical

MATERIALS LETTERS

Volume

118

Number

3

State

Kingdom of the Netherlands

Pages from

204

Pages to

207

Pages count

4

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",
  journal="MATERIALS LETTERS",
  year="2014",
  volume="118",
  number="3",
  pages="204--207",
  doi="10.1016/j.matlet.2013.12.079",
  issn="0167-577X"
}