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Recommended Papers for: FTIR

Total Papers Found: 13

Influence of thermal process on microstructural and physical properties of ambient pressure dried hydrophobic silica aerogel monoliths

Ambient pressure dried hydrophobic silica aerogel monoliths were prepared via simultaneous solvent exchange and surface modification in order to minimize volume shrinkage and density. At room temperature, the obtained silica aerogels had a low density of 0.096 g/cm3, a high surface area and hydrophobicity, and a low thermal conductivity of 0.0217 W/m·K. The effect of heating on these properties was also determined. After the aerogel had been heated to 300...

Author(s): , , , , , , ,

Measurement of thermal properties of polyaniline/metal from room temperature to 170°C

The effective thermal conductivity and thermal diffusivity were investigated for polyaniline (PANI) composites containing iron and manganese at varying temperatures. Composites were prepared containing 100% Fe, 50% Fe and 50% Mn, and 100% Mn. It was determined that both the effective thermal conductivity and effective thermal diffusivity increased with increasing iron content. The authors attribute this increase to the increase in crosslinking density between the nitrogen in PANI and Fe....

Author(s): , , , , ,

A Study of Carbonized Lignin as an Alternative to Carbon Black

The properties of carbonized lignin nanoparticles were investigated to determine if this material could be used as an environmentally-friendly alternative to carbon black. The observed surface area of the carbonized lignin was found to be higher than that of carbon black because the powder is highly porous. The lignin nanoparticles were able to be produced in such a way as to give a similar size as carbon black nanoparticles, with ...

Author(s): , ,

Composites of Sulfonated Polystyrene-block-Poly (ethylene-ran-butylene)-block-Polystyrene and Graphite-Polyoxometalate: Preparation, Thermal and Electrical Conductivity

Sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SPSPB) was used as a polymer matrix to create polymeric nanocomposites using graphite (G) and graphite-polyoxometalate (G-POM) as fillers. It was found that the nanocomposites had higher thermal and electrical conductivities than SPSPB alone, and that both the thermal and the electrical conductivity increased with increasing filler concentration. At all filler contents tested, the SPSPB/G-POM had both a higher thermal conductivity and a higher electrical ...

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Fabrication of paraffin-SiO2 shape-stabilized composite phase change material via chemical precipitation method for building energy conservation

The authors have prepared a shape-stabilized composite phase change material (ss-CPCM) using paraffin encapsulated in SiO2. SiO2 was chosen because of its low cost, such that the resultant ss-CPCM would be a feasible option for use at the commercial or industrial scale. The composite was examined using FTIR and XRD and it was confirmed that it had excellent chemical compatibility and stability. The thermal storage capability and thermal conductivity results ...

Author(s): , , , , ,