abstract

• Polymeric composites based on polyethylene, high-density polyethylene (HDPE) and ultra-high-molecular-weight polyethylene (UHMWPE) with polycaprolactone (PCL) and a ceramic filler (bioglass type) were studied in terms of their thermal and mechanical behavior. Two polyethylene ratios (10/90 and 30/70%25 wt/wt of UHMWPE/HDPE) and two PCL content ratios (5%25 and 10%25 wt/wt) were used. The obtained composites were characterized by differential scanning calorimetry, melt flow index, Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction. The results indicate a nonchemical interaction between polyethylene, especially the UHMWPE, and PCL and that the composites%27 thermal transitions vary from the parent polymers and depend on the PCL concentration. The PCL%27s melting temperature in the composite was reduced, showing a new one. Also, the melting enthalpy of polyethylene was reduced when the concentration of PCL increased. The mechanical behavior depends on both the polyethylene ratio and the PCL content. The composite with 30%25 wt/wt of UHMWPE and 10%25 wt/wt of PCL showed the highest toughness value due to the good interaction between polymers. These new composites may be attractive for biomedical applications and could be evaluated, for example, as materials for prostheses. © 2020 Wiley Periodicals LLC
• Polymeric composites based on polyethylene, high-density polyethylene (HDPE) and ultra-high-molecular-weight polyethylene (UHMWPE) with polycaprolactone (PCL) and a ceramic filler (bioglass type) were studied in terms of their thermal and mechanical behavior. Two polyethylene ratios (10/90 and 30/70%25 wt/wt of UHMWPE/HDPE) and two PCL content ratios (5%25 and 10%25 wt/wt) were used. The obtained composites were characterized by differential scanning calorimetry, melt flow index, Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction. The results indicate a nonchemical interaction between polyethylene, especially the UHMWPE, and PCL and that the composites' thermal transitions vary from the parent polymers and depend on the PCL concentration. The PCL's melting temperature in the composite was reduced, showing a new one. Also, the melting enthalpy of polyethylene was reduced when the concentration of PCL increased. The mechanical behavior depends on both the polyethylene ratio and the PCL content. The composite with 30%25 wt/wt of UHMWPE and 10%25 wt/wt of PCL showed the highest toughness value due to the good interaction between polymers. These new composites may be attractive for biomedical applications and could be evaluated, for example, as materials for prostheses. © 2020 Wiley Periodicals LLC

authors

• Alemán Espinosa E.
• Escobar-Barrios V.A.
• Palestino Escobedo Alma Gabriela
• Waldo-Mendoza M.A.

publication date

• 2020-01-01

published in

• Journal of Applied Polymer Science  Journal

keywords

• bioglass; polycaprolactone; structure-property relationships; thermo-mechanical behavior; UHMWPE/HDPE Aliphatic compounds; Differential scanning calorimetry; Fillers; Fourier transform infrared spectroscopy; Mechanical properties; Medical applications; Melting; Nonmetallic matrix composites; Scanning electron microscopy; Ultrahigh molecular weight polyethylenes; Biomedical applications; High density polyethylene(HDPE); Mechanical behavior; Melt flow index; Melting enthalpy; Polymeric composites; Thermal and mechanical properties; Thermal transitions; High density polyethylenes

Digital Object Identifier (DOI)

• 10.1002/app.50374

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