Mechanical properties and degradation of laser sintered structures of PLA microspheres obtained by dual beam laser sintering method

Abstract This paper discusses the influence of process parameters on degradation and mechanical properties laser-sintered polylactide (PLA) microspheres obtained using novel dual beam laser sintering method (DBLS). DBLS is a technique developed by our team that modification standard polymer (pLS), with potential to reduce during process. The PLA were produced emulsion-solvent evaporation method. was carried out in wide range obtain samples various degrees sintering. Next number tests conducted assess physicochemical these samples, including visualization techniques (SEM, digital microscopy photography), gel permeation chromatogrphy (GPC), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), dynamic thermal analysis (DMTA) static compression tests. work shows for different sets parameters, it possible product similar properties, but at same time completely degree degradation. Hence, hypothesis when assessing sinter quality one should take into account not only detail, also degradation, which great importance, example, biomedical applications. It has been shown sintered polymers post-process material outside zone.