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090 _aB-20869
245 1 0 _aFabrication of a poly (E-caprolactone)/starch nanocomposite scaffold with a solvent-casting/salt-leaching technique for bone tissue engineering applications
490 0 _vJournal of Applied Polymer Science, p.43523, 2016
520 3 _aBiomaterial properties and controlled architecture of scaffolds are essential features to provide an adequate biological and mechanical support for tissue regeneration, mimicking the ingrowth tissues. In this study, a bioextrusion system was used to produce 3D biodegradable scaffolds with controlled architecture, comprising three types of constructs: (i)poly(?-caprolactone)(PCL)matrix as reference; (ii)PCL-based matrix reinforced with cellulose nanofibers (CNF); and (iii)PCL-based matrix reinforced with CNF and hydroxyapatite nanoparticles (HANP). The effect of the addition and/or combination of CNF and HANP into the polymeric matrix of PCL was investigated, with the effects of the biomaterial composition on the constructs (morphological, thermal, and mechanical performances)being analysed. Scaffolds were produced using a single lay-down pattern of 0/90°, with the same processing parameters among all constructs being assured. The performed morphological analyses showed a satisfactory distribution of CNF within the polymer matrix and high reliability was obtained among the produced scaffolds. Significant effects on surface wettability and thermal properties were observed, among scaffolds. Regarding the mechanical properties, higher scaffold stiffness in the reinforced scaffolds was obtained. Results from the cytotoxicity assay suggest that all the composite scaffolds presented good biocompatibility. The results of this first study on cellulose and hydroxyapatite reinforced constructs with controlled architecture clearly demonstrate the potential of these 3D composite constructs for cell cultivation with enhanced mechanical properties.
650 1 4 _aBIOMATERIALS
650 1 4 _aCOMPOSITES
650 1 4 _aMECHANICAL PROPERTIES
650 1 4 _aPOLYESTERS
650 1 4 _aPOROUS MATERIALS
700 1 2 _aTaherkhani, S.
700 1 2 _aMoztarzadeh, F.
856 4 0 _uhttps://drive.google.com/file/d/1sRWW0V7L5WHIqkt-_j7jQcy56GxhigXj/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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