RT info:eu-repo/semantics/article
T1 Thermally-activated shape memory effect on biodegradable nanocomposites based on PLA/PCL blends reinforced with hydroxyapatite
A1 Peponi, Laura
A1 Sessini, Valentina
A1 Arrieta, Marina Patricia
A1 Navarro-Baena, Iván
A1 Sonseca, Agueda
A1 Dominici, Franco
A1 Gimenez, Enrique
A1 Torre, Luigi
A1 Tercjak, Agnieszka
A1 Kenny, José María
A1 Lopez, Daniel
K1 Biodegradable blends
K1 Nanocomposites
K1 Nanosized hydroxyapatite
K1 PCL
K1 PLA
K1 Shape memory
K1 Química
K1 Chemistry
AB In this work, the effect of the addition of different amount of nanosized hydroxyapatite (nHA) on the shape memory behavior of blends based on poly (lactic acid) (PLA) and poly (epsilon-caprolactone) (PCL) has been studied. In particular PLA/PCL blend with 70 wt % PLA has been reinforced with 0.5, 1 and 3 wt % nHA. Moreover, the relationship between the morphology and the final properties of the nanocomposites has been investigated by field emission scanning electron microscopy, confocal Raman spectroscopy and atomic force microscopy. In particular, PeakForce has been used to study quantitative nanomechanical properties of the multifunctional materials leading to conclusion that nHA increase the phase separation between PLA and PCL as well as act as reinforcements for the PCL-rich phase of the nanocomposites. Furthermore, excellent thermally-activated shape memory response has been obtained for all the nanocomposites at 55 degrees C. Finally, the disintegration under composting conditions at laboratory scale level was studied in order to confirm the biodegradable character of these nanocomposites. Indeed, these materials are able to be used for biomedical issues as well as for packaging applications where both thermally-activated shape memory effect and biodegradability are requested.
SN 0141-3910
YR 2018
FD 2018-02-27
LK http://hdl.handle.net/10017/43763
UL http://hdl.handle.net/10017/43763
LA eng
DS MINDS@UW
RD 19-abr-2024