Effect of Steam on Structure and Mechanical Properties of Biomedical Block Copolymers (Articolo in rivista)

Type
Label
  • Effect of Steam on Structure and Mechanical Properties of Biomedical Block Copolymers (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/polb.23567 (literal)
Alternative label
  • Todros S.; Venturato C.; Natali A.N.; Pace G.; Di Noto V. (2014)
    Effect of Steam on Structure and Mechanical Properties of Biomedical Block Copolymers
    in Journal of polymer science. Part B, Polymer physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Todros S.; Venturato C.; Natali A.N.; Pace G.; Di Noto V. (literal)
Pagina inizio
  • 1337 (literal)
Pagina fine
  • 1346 (literal)
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  • http://onlinelibrary.wiley.com/doi/10.1002/polb.23567/abstract;jsessionid=4AD3CD5F10478EE4A3FDFC9E9203D9CC.f02t03 (literal)
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  • 52 (literal)
Rivista
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  • 10 (literal)
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  • 20 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1-3 : Department of Industrial Engineering, University of Padova, via Marzolo 9, Padova, Italy / 1-3,5 : Centre for Mechanics of Biological Materials, University of Padova, via Marzolo 9, Padova, Italy / 4 : CNR-IENI, via Marzolo 1, Padova, Italy / 4,5 : Department of Chemical Sciences, University of Padova, via Marzolo 1, Padova, Italy (literal)
Titolo
  • Effect of Steam on Structure and Mechanical Properties of Biomedical Block Copolymers (literal)
Abstract
  • The effect of steam on the micro-phase structure and mechanical properties of different block copolymers used in biomedical devices is investigated via FT-IR, tensile tests and dynamic mechanical analysis (DMA). Steam sterilization, commonly performed on medical devices and simulated in this work, affects the copolymers' morphology, due to high temperature and humidity conditions. FT-IR analysis reveals that steam induces a modification in the crystalline conformations of copolymers with a pre-existing hydrogen bonding network, that is, thermoplastic polyurethanes (TPU) and poly(ether-block-amide) (PEBA), while it does not significantly affect the domain conformation in styrenic block copolymers (SEBS), due to weak interaction with water. As a consequence, relevant changes of the mechanical properties, closely related to the microdomain structure, are found for TPU and PEBA after sterilization, while SEBS mechanical behavior remains stable, as demonstrated by tensile tests and DMA results. For this reason, SEBS is suggested as the best choice in terms of durability in biomedical applications. (C) 2014 Wiley Periodicals, Inc. (literal)
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