TY - JOUR ID - 13637 TI - Creep behavior of Biodegradable Triple-component Nanocomposites Based on PLA/PCL/bioactive Glass for ACL Interference Screws JO - The Archives of Bone and Joint Surgery JA - ABJS LA - en SN - 2345-4644 AU - Esmaeilzadeh, Javad AU - Hesaraki, Saeed AU - Ebrahimzadeh, Mohammad H. AU - Asghari, Golam Hosein AU - Kachoei, Amir R. AD - Orthopedic Research Center, Mashhad University of Medical Science, Mashhad, Iran Esfarayen University of Technology, Esfarayen, North Khorasan, Iran AD - Biomaterials Group, Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Tehran, Iran AD - Orthopedic Research Center, Mashhad University of Medical Science, Mashhad, Iran AD - Central Laboratory Faculty, Iran Polymers and Petrochemical Institute, Tehran, Iran Y1 - 2019 PY - 2019 VL - 7 IS - 6 SP - 531 EP - 537 KW - ACL screws KW - bioactive glass nanoparticles KW - Creep KW - creep recovery KW - PLA/PCL blend DO - 10.22038/abjs.2019.30582.1796 N2 - 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.Level of evidence: I UR - https://abjs.mums.ac.ir/article_13637.html L1 - https://abjs.mums.ac.ir/article_13637_d5c2844f9dbc5a36aea512a662565263.pdf ER -