The effect of simulated body fluid on the mechanical properties of multiblock poly(aliphatic/aromatic-ester) copolymers.
The effects of simulated body fluid (SBF) on the surface and mechanical properties of poly(aliphatic/aromatic-ester) (PED) copolymers were investigated. PED copolymers containing different hard (aromatic) and soft (aliphatic) segment weight ratios were exposed to SBF for 52 days, and afterwards their mechanical properties were evaluated. A quasi-static tensile test estimating relaxation and fatigue properties from the hysteresis method was performed. The surface properties were monitored with scanning electron microscopy and energy-dispersive X-ray spectrometry. PED copolymers showed various susceptibilities to apatite layer formation on the surface. This was ascribed to the hard/soft segment ratios of PED materials. Polymers containing higher amounts of amorphous soft segments showed a better deposition with the apatite layer, which provided improved mechanical properties, especially fatigue (improved dynamic creep resistance).
Renke-Gluszko
Magdalena
M
Technical University of Szczecin, Polymer Institute, Pulaskiego 10, Szczecin 70-322, Poland.
El Fray
Miroslawa
M
D001672:Biocompatible Materials / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry; D001826:Body Fluids / Q000737:chemistry*; D004548:Elasticity; D005227:Fatty Acids / Q000737:chemistry*; D006244:Hardness; D008422:Materials Testing; D011091:Polyesters / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength; D014783:Viscosity
D001672:Biocompatible Materials; D005227:Fatty Acids; D011091:Polyesters; D011108:Polymers; C041733:poly(1,4-butylene terephthalate)