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Correlation Between Chemical and Mechanical Properties in Renewable Poly(ether‐block‐amide)s for Biomedical Applications
Author(s) -
Todros Silvia,
Natali Arturo N.,
Pace Giuseppe,
Di Noto Vito
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201300315
Subject(s) - thermogravimetric analysis , differential scanning calorimetry , fourier transform infrared spectroscopy , dynamic mechanical analysis , materials science , polyamide , polymer chemistry , amide , ether , chemical engineering , composite material , chemistry , polymer , organic chemistry , thermodynamics , physics , engineering
Renewable poly(ether‐block‐amide)s (PEBAs), with different polyamide/polyether (PA/PE) ratios, are characterized for the development of biomedical devices. The effect of the chemical composition on the mechanical properties is studied via Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), tensile tests, dynamic mechanical analysis (DMA), and broadband electric spectroscopy (BES). FTIR spectroscopy evidences the presence of different PA crystalline domains depending on the PA/PE ratio, as also evidenced by TGA and DSC. Such differences influence the molecular dynamics, as shown by DMA and BES, and the mechanical properties characterized by tensile tests. Indeed, PEBAs with a higher PA/PE ratio are stiffer due to a higher crystalline degree.