Evaluation of the mechanical properties and bioactivity of bio-inspired PLA/bioactive fillers scaffolds produced via 3D printing

• Grant number: 18/13625-2
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Effective date (Start): November 01, 2018
• Effective date (End): October 18, 2019
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Luiz Antonio Pessan
• Grantee: Eduardo Henrique Backes
• Supervisor: Rui Luis Goncalves dos Reis
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Research place: Universidade do Minho (UMinho), Portugal
• Associated to the scholarship: 17/11366-7 - Development of bio-inspired PLA/bioglass scaffolds via 3D printed, BP.DR

Abstract

Over the last years orthopedic procedures for bone repairs due to trauma, new implants, as well as new surgical procedures, have been developed. In this context, new surgical procedures and new materials for bone repair have been developed. One of the most outstanding alternatives is the development ofscaffolds. One of the ways to produce scaffolds with adequate mechanical properties and bioactive behavior is the production of poly (lactic acid) composites,PLA, with bioactive ceramic fillers, such as bioglass, hydroxyapatite (HA) and b-tricalcium phosphate (b-TCP). Conventional techniques for producing polymer composites / bioactive fillers usually employ solvents and lead the formation of morphology with non-uniform distribution of pore sizes.In this project the preparation of PLA scaffolds / bioactive ceramic fillers will beperformed using the FDM technique, 3D printing, thus it is possible to obtain bioactive scaffolds with controlled morphology (size of pores that mimic the bone structure). The obtained scaffolds will be characterized with respect to their mechanical properties, compression test, and bioactive behavior, through cell adhesion and proliferation assays with osteoblastic cells.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BACKES, EDUARDO H.; FERNANDES, EMANUEL M.; DIOGO, GABRIELA S.; MARQUES, CATARINA F.; SILVA, TIAGO H.; COSTA, LIDIANE C.; PASSADOR, FABIO R.; REIS, RUI L.; PESSAN, LUIZ A.. Engineering 3D printed bioactive composite scaffolds based on the combination of aliphatic polyester and calcium phosphates for bone tissue regeneration. Materials Science & Engineering C-Materials for Biological Applications, v. 122, MAR 2021. (17/11366-7, 11/21313-1, 18/13625-2, 17/09609-9)