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EnglishPectin-based biocomposite hydrogels were produced by internal gelation, using different hydroxyapatite (HA) powders from commercial source or synthesized by the wet chemical method. HA possesses the double functionality of cross-linking agent and inorganic reinforcement. The mineralogical composition, grain size, specific surface area and microstructure of the hydroxyapatite powders are shown to strongly influence the properties of the biocomposites. Specifically, the grain size and specific surface area of the HA powders are strictly correlated to the gelling time and rheological properties of the hydrogels at room temperature. Pectin pH is also significant for the formation of ionic cross-links and therefore for the hydrogels stability at higher temperatures. The obtained results point out that micrometric-size hydroxyapatite can be proposed for applications which require rapid gelling kinetics and improved mechanical properties; conversely the nanometric hydroxyapatite synthesized in the present work seems the best choice to obtain homogeneous hydrogels with more easily controlled gelling kinetics. © 2014ElsevierB.V.Allrightsreserved
Micro- and nano-hydroxyapatite as active reinforcement for soft biocomposites / F., Munarin; P., Petrini; R., Gentilini; R. S., Pillai; Dirè, Sandra; M. C., Tanzi; Sglavo, Vincenzo Maria. - In: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES. - ISSN 0141-8130. - 72(2015), pp. 199-209.
| Titolo: | Micro- and nano-hydroxyapatite as active reinforcement for soft biocomposites | |
| Autori: | F., Munarin; P., Petrini; R., Gentilini; R. S., Pillai; Dirè, Sandra; M. C., Tanzi; Sglavo, Vincenzo Maria | |
| Autori Unitn: | ||
| Titolo del periodico: | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | |
| Anno di pubblicazione: | 2015 | |
| Codice identificativo Scopus: | 2-s2.0-84907487273 | |
| Codice identificativo WOS: | WOS:000347577900029 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.ijbiomac.2014.07.050 | |
| Handle: | http://hdl.handle.net/11572/98727 | |
| Citazione: | Micro- and nano-hydroxyapatite as active reinforcement for soft biocomposites / F., Munarin; P., Petrini; R., Gentilini; R. S., Pillai; Dirè, Sandra; M. C., Tanzi; Sglavo, Vincenzo Maria. - In: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES. - ISSN 0141-8130. - 72(2015), pp. 199-209. | |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
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