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Nanocomposite electrospun fibers of poly(ε-caprolactone)/bioactive glass with shape memory properties

Bioactive Materials 2022年第5期7卷 230-239页

作者： Liliana Liverani Anna Liguori paola zezza Chiara Gualandi Maurizio Toselli Aldo R.Boccaccini Maria Letizia Focarete Department of Materials Science and Engineering University of Erlangen-NurembergCauerstr.691058ErlangenGermany Department of Chemistry“Giacomo Ciamician”and INSTM UdR of Bologna University of Bolognavia Selmi 240126BolognaItaly Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology CIRI-MAMUniversity of BolognaViale Risorgimento240136BolognaItaly Department of Industrial Chemistry“Toso Montanari” University of BolognaViale Risorgimento 440136BolognaItaly Health Sciences and Technologies–Interdepartmental Center for Industrial Research(HST-ICIR) Alma Mater Studiorum-Universit`a di Bologna40064Ozzano dell’EmiliaBolognaItaly

Electrospun fibers of shape memory triethoxysilane-terminated poly(epsilon-caprolactone)(PCL-TES)loaded with bioactive glasses(BG)are here *** PCL-TES,as well as PCL/BG nanocomposite fibers,are also considered for *** is proposed that hydrolysis and condensation reactions take place between triethoxysilane groups of the polymer and the silanol groups at the BG particle surface,thus generating additional crosslinking points with respect to those present in the PCL-TES *** as-spun PCL-TES/BG fibers display excellent shape memory properties,in terms of shape fixity and shape recovery ratios,without the need of a thermal crosslinking *** particles confer in vitro bioactivity to PCL-based nanocomposite fibers and favor the precipitation of hydroxycarbonate apatite on the fiber *** cytocompatibility tests demonstrate that the addition of BG particles to PCL-based polymer does not inhibit ST-2 cell *** novel approach of using bioactive glasses not only for their biological properties,but also for the enhancement of shape memory properties of PCL-based polymers,widens the versatility and suitability of the obtained composite fibers for a huge portfolio of biomedical applications.

关键词： PCL-TES Bioactive glasses Bioactivity Shape memory polymers Electrospinning Benign solvents

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