Nanocomposite phase change materials (PCMs) were prepared by adding silver nanoparticles to isotactic polypropylene (iPP) and an iPP/paraffin wax phase change materials. The Ag nanoparticles were found to be well dispersed in both iPP and the iPP/wax composite, and filler agglomeration was found to increase with increasing filler content. The nanoparticles did not significantly affect the modulus of the iPP on its own, but when Ag and paraffin ...
PMMA/silica mesocomposites (PSM) and nanocomposites (PSN) were synthesized by incorporating vinyl-modified mesoporous silica (VMS) or silica particles into the poly (methyl methacrylate). The prepared composites were characterized by TEM and GPC. Thermal conductivity and gas permeability measurements were performed on the composites using a thermal constants analyzer and Yanco GTR-31 gas permeability analyzer, respectively. It was determined that an increase in the content of nanoscale silica particles improved the ...
The mechanical and thermal properties of blends of cis-polyisoprene (CPI) and trans-polyisoprene (TPI) are investigated and compared to those of the pure elastomers. It was found that the elastic modulus and tensile strength increased with increasing TPI content and that the thermal conductivity, thermal diffusivity, and specific heat of the blends also increased with increasing TPI content. In contrast to this trend, the measured thermal properties of pure TPI were ...
The authors prepared PMMA/clay composites by the in situ bulk polymerization method. The prepared composites were characterized by FT-IR, WAXRD, SEM, TEM, DMA and the transient plane source (TPS) technique to measure thermal conductivity. Not only were the thermal properties of the composites studied, but physical and chemical properties as well....
Thermally Exfoliated Graphite Oxide (TEGO) was mixed with natural rubber (NR) using a two-roll mill but the mixing of the TEGO with the NR didn't proceed as expected. Therefore the researchers had to modify the procedure and decided to pre-mix the TEGO and NR in an ultrasonically-assisted latex co-coagulation process followed by two-roll milling resulted in significant improvement in the thermal and electrical properties of the nanocomposite compared to the ...
