creep behavior of biodegradable triple-component nanocomposites based on pla/pcl/bioactive glass for acl interference screws

Background: short-time creep behaviorfor aseries of biodegradable nanocomposites, which areused as implantabledevices inthe body, is a crucial factor.the present study aimed to investigate the effect of bioactive glass nanoparticles(bgn) on creep and creep-recovery behaviors of polylactic acid/polycaprolactone (pla/pcl) blends at different givenloads and different applied temperatures.methods: a series of biodegradable nanocomposites consisted of pla/pcl blends (comprising 80 parts pla and 20parts pcl) with different amounts of modified-bgn (m-bgn) fillers were prepared using the evaporated solvent castingtechnique. creep and creep-recovery behaviors of all specimens were studied at different valuable stressesof 3 and 6mpa and different given temperatures of 25 and 37°c.results: in all cases, m-bgn improved the creep resistance of the nanocomposites due to the retardation effectduring the creep behaviors of the nanocomposite systems. the obtained results in terms of creep and creep-recoveryproperties determined that the nanocomposites of pla/pcl/m-bgn can satisfy the required conditions of an appropriateanterior cruciate ligament reconstruction (acl-r) screw.conclusion: the obtained results confirmed that the bgn plays an impeding role in the movement of pla/pcl chainsleading to in increase the creep resistance. according to the results, it was determined that the nanocomposites of pla/pcl and m-bgn can satisfy the required circumstances of a proper acl-r screw.