title: Mechanical, thermal and bio-compatibility studies of PAEK-hydroxyapatite nanocomposites.
abstract: In this study high performance bone analogue has been developed using poly(aryl ether) ketone, poly(dimethyl siloxane) and reinforced with nanohydroxyapatite as biocompatible filler. Compressive, tensile and flexural properties have shown sustained improvement up to 7% of nanohydroxyapatite loading. The mechanical properties were further analyzed using micromechanical theories for good interfacial adhesion between matrix and filler. The composites are cytocompatible and revealed multiple layers of apatite formation in simulated body fluid. The thickness of apatite layer increased with increase in nanohydroxyapatite loading in the composite. Poly(dimethyl siloxane) has been grafted with phosphate group to enhance compatibility with nanohydroxyapatite. Nanohydroxyapatite has been treated with silane to enhance compatibility and facilitate dispersion in the matrix as observed through transmission electron microscopy, scanning electron microscopy and X-Ray diffraction studies.
authors.affiliation: The Energy and Resources Institute (TERI), SRC, Bangalore 560071, India.
authors.forename: Pratik
authors.initials: P
authors.lastname: Roy
authors.affiliation: The Energy and Resources Institute (TERI), SRC, Bangalore 560071, India. Electronic address: sailaja.bhattacharya@gmail.com.
authors.forename: R R N
authors.initials: RR
authors.lastname: Sailaja
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry* / Q000633:toxicity; D002244:Carbon / Q000737:chemistry; D000077482:Carbon Fiber; D019245:Compressive Strength; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D017886:Durapatite / Q000737:chemistry*; D007659:Ketones / Q000737:chemistry* / Q000633:toxicity; D008422:Materials Testing; D055595:Mechanical Phenomena; D051379:Mice; D053761:Nanocomposites / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry* / Q000633:toxicity; D000067996:RAW 264.7 Cells; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength
chemical_list: D001672:Biocompatible Materials; D000077482:Carbon Fiber; D004129:Dimethylpolysiloxanes; D007659:Ketones; D011108:Polymers; C013830:baysilon; D002244:Carbon; D017886:Durapatite
keywords: Mechanical properties; Nanohydroxyapatite; Poly(aryl ether) ketone; Poly(dimethyl siloxane)