RT journal article
T1 Development of Surface-Coated Polylactic Acid/Polyhydroxyalkanoate (PLA/PHA) Nanocomposites
A1 Relinque Madroñal, José Javier
A1 Sanz de León, Alberto
A1 Hernández-Saz, J.
A1 García-Romero, M.G.
A1 Navas-Martos, Francisco J.
A1 Morales-Cid, G.
A1 Molina Rubio, Sergio Ignacio
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 polymer–matrix composites
K1 ball milling
K1 thermal properties
K1 mechanical testing
K1 physical methods of analysis
AB This work reports on the design and development of nanocomposites based on a polymericmatrix containing biodegradable Polylactic Acid (PLA) and Polyhydroxyalkanoate (PHA) coatedwith either Graphite NanoPlatelets (GNP) or silver nanoparticles (AgNP). Nanocomposites wereobtained by mechanical mixing under mild conditions and low load contents (<0.10 wt %). Thisfavours physical adhesion of the additives onto the polymer surface, while the polymeric bulkmatrix remains unaffected. Nanocomposite characterisation was performed via optical and focusedion beam microscopy, proving these nanocomposites are selectively modified only on the surface,leaving bulk polymer unaffected. Processability of these materials was proven by the fabrication ofsamples via injection moulding and mechanical characterisation. Nanocomposites showed enhancedYoung modulus and yield strength, as well as better thermal properties when compared with theunmodified polymer. In the case of AgNP coated nanocomposites, the surface was found to beoptically active, as observed in the increase of the resolution of Raman spectra, acquired at least10 times, proving these nanocomposites are promising candidates as surface enhanced Ramanspectroscopy (SERS) substrates.
PB MDPI
SN 2073-4360
YR 2019
FD 2019-03
LK http://hdl.handle.net/10498/21250
UL http://hdl.handle.net/10498/21250
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 15-nov-2026