Fabrication, characterization, and dynamic behavior of polyester/TiO2 nanocomposites

By V. Evora, A. Shukla. 2003

177 citations recorded by the source corpus.

Abstract Unsaturated polyester resin specimens embedded with small loadings of 36 nm average diameter TiO 2 particles were fabricated using a direct ultrasonification method to study the effects of nanosized particles on nanocomposite bulk mechanical properties. The ultrasonification method employed produced nanocomposites with excellent particle dispersion as verified by transmission electron microscopy (TEM). Quasi-static fracture toughness, tension, and compression testing was carried out. The presence of the particles had the greatest effect on fracture toughness; negligible influence was observed in the remaining quasi-static properties. Scanning electron microscopy (SEM) of fracture surfaces was carried out to identify toughening mechanisms. The inadequacy of the bond between the filler and the matrix and the presence of minor particle agglomerations in specimens containing higher volume fractions of particles were believed to be responsible for a consistent decrease in property values beyond a volume fraction of 1 vol.%. Dynamic fracture toughness testing was carried out, and an increase in dynamic fracture toughness relative to quasi-static fracture toughness was observed. High strain rate testing conducted using a split Hopkinson pressure bar (SHPB) apparatus revealed a moderate stiffening effect with increasing particle volume fraction, although no marked effect was observed on the ultimate strength.

Subfields: Mechanical Engineering, Mechanics of Materials, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/0979ea59b5b751fd6711d598e3b5305f3264fed2

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Mechanical Engineering

1. G. Gkikas
2. Alkiviadis S. Paipetis
3. In‐Yup Jeon
4. Jong‐Beom Baek
5. N. Barkoula

In Mechanics of Materials

1. G. Gkikas
2. Alkiviadis S. Paipetis
3. In‐Yup Jeon
4. Jong‐Beom Baek
5. N. Barkoula
6. Dimitrios G. Aggelis

In Polymers and Plastics

1. Alkiviadis S. Paipetis
2. In‐Yup Jeon
3. Jong‐Beom Baek
4. N. Barkoula

Citations in the corpus

• Nanocomposites Derived from Polymers and Inorganic Nanoparticles (2010, methodology): “The important ones are: (i) intercalation of nanoparticles with the polymer or pre-polymer from solution [23-25]; (ii) in situ intercalative polymerization [26-28]; (iii) melt intercalation [29,30]; (iv) direct mixture of polymer and particulates [31-33]; (v) template synthesis [34,35]; (vi) in situ”
• Effect of dispersion conditions on the thermo-mechanical and toughness properties of multi walled carbon nanotubes-reinforced epoxy (2012, background): “Further to the successful incorporation of micro-scale fillers to epoxy resin [3–6], nanoparticles, nanotubes, and nanofibers are now in the forefront of material research as filler material to produce high performance composite structures with enhanced properties [7–9].”