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Polyhydroxyalkanoate (PHA)/inorganic phase composites for tissue engineering applications.

Abstract
Polyhydroxyalkanoates are emerging as a class of biodegradable polymers for applications in tissue engineering. Members of the polyhydroxyalkanoates family encompass a wide variety of materials, from hard and brittle materials to soft and elastomeric. Over the years, efforts have been made to extend the group of polyhydroxyalkanoates and to investigate their use in numerous biomedical applications, such as sutures, cardiovascular patches, wound dressings, guided tissue repair/regeneration devices, and tissue engineering scaffolds. Along with the development of polyhydroxyalkanoates, researchers have looked into the possibility of designing composites in combination with inorganic phases to further improve the mechanical properties, rate of degradation, and also impart bioactivity. Poly(3-hydroxybutyrate), poly(3-hydroxybutyrate-co-3-hydroxyvalerate), and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) are some of the polymers which have been studied extensively to fabricate composites in combination with hydroxyapatite, bioactive glass, and glass-ceramic fillers or coatings. This paper reviews international research carried out toward development of polyhydroxyalkanoates/inorganic phase composites in terms of systems investigated, microstructures, properties achieved, and applications, with special focus on tissue engineering scaffolds. A comparison between different composite systems developed in the past few years is presented. The paper also addresses the prospect of potential further development of polyhydroxyalkanoates/inorganic phase composites with optimized microstructure and properties for improved tissue engineering scaffolds.
AuthorsSuperb K Misra, Sabeel P Valappil, Ipsita Roy, Aldo R Boccaccini
JournalBiomacromolecules (Biomacromolecules) Vol. 7 Issue 8 Pg. 2249-58 (Aug 2006) ISSN: 1525-7797 [Print] United States
PMID16903667 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)
Chemical References
  • Biocompatible Materials
  • Polyesters
Topics
  • Absorbable Implants
  • Animals
  • Biocompatible Materials
  • Humans
  • Materials Testing
  • Polyesters
  • Tissue Engineering

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