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Recommended Papers for: Gel Permeation Chromatography

Total Papers Found: 3

Systematically comparative studies on the preparation and physical properties of PMMA–silica mesocomposite and nanocomposite membranes

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 ...

Author(s): , , , , ,

Effect of vinyl-modified silica and raw silica particles on the properties of as-prepared polymer-silica nanocomposite foams

This research studied the effect of the addition of vinyl-modified silica and raw silica additions to polymer-silica nanocomposite foams. Extensive physical property characterization was undertaken after their addition to quantify their influence. TEM found that silica particles added through the vinyl-modified silica dispersed better than the raw silica. This created foams with a higher density and smaller cell size. A slight reduction in the thermal conductivity after the additions was ...

Author(s): , , , , , ,

Effect of dispersion capability of organoclay on cellular structure and physical properties of PMMA/clay nanocomposite foams

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....

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