Memorias de investigación
Communications at congresses:
Recent Advances in Biopolymer Nanocomposites based on WS2 Inorganic Nanotubes

Research Areas
  • Nanotechnology,
  • Nanoparticles,
  • Biopolymers

In recent years, several biopolymer-based nanotechnologies have emerged with an emphasis on achieving chemical, mechanical, and biological properties superior to conventional biopolymers, opening a new dimension for the plastic industry. Therefore, these materials have been formulated and associated with nano-sized fillers, which could bring a large range of improved properties (stiffness, permeability, crystallinity, thermal stability). Along with many interesting nanofillers, inorganic fullerenes (IFs) and nanotubes (INTs) based on layered metal dichalcogenides, such as tungsten and molybdenum disulphide (WS2/MoS2), has become a field of recent interest. The surprising properties of these nanostructures such as high impact resistance and superior tribological behavior open up a wide variety of opportunities for applications in, for example, the automotive and aerospace industries, electronics and medical technology and, more particularly, in the field of polymer nanocomposites [Naffakh et al. Prog. Polym. Sci. 2013, 38, 1163-1231]. An exciting opportunity exists for research in the area of biobased polymer nanocomposites [Naffakh et al. RSC Adv. 2015, 5, 17879-17887]. The present investigation explores an alternative strategy to prepare novel melt-processable bionanocomposites based on poly(L-lactic acid) (PLLA), hydroxyapatite (HA) and INT-WS2, and the main objective is the analysis of their structure-property-performance relationship. In particular, it was found that the incorporation of INT-WS2 into PLLA/HA improves the dispersibility of the HA microparticles and reduces their mean size, resulting in larger interfacial area. Additionally, INT-WS2 can act as efficient nucleating agents as well as reinforcing fillers in PLLA/HA blends, thus remarkably enhancing their thermal, mechanical and tribological properties. The results obtained are promising and encourage further investigations in order to evaluate the full potential of these novel hybrid nanocomposites for use in biomedical applications, particularly as scaffolds for bone tissue engineering.
4th Nano Today Conference
Dubai (Emiratos Árabes)
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Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Bioingeniería y Materiales (BIO-MAT)
  • Departamento: Física Aplicada e Ingeniería de Materiales