https://cyberleninka.org/article/n/1018032.pdf

Polymer nanotechnology: Nanocomposites

Recently, polymer nanocomposites reinforced with lower volume fraction of nanoceramics and carbon nanotubes have attracted steadily growing interest due to their peculiar and fascinating properties as well as their unique applications in commercial sectors. The incorporation of nanoceramics such as layered silicate clays, calcium carbonate or silica nanoparticles arranged on the nanometer scale with a high aspect ratio and/or an extremely large surface area into polymers improves their mechanical performances significantly. The properties of nanocomposites depend greatly on the chemistry of polymer matrices, nature of nanofillers, and the way in which they are prepared. The uniform dispersion of nanofillers in the polymer matrices is a general prerequisite for achieving desired mechanical and physical characteristics. In this review article, current development on the processing, structure, and mechanical properties of polymer nanocomposites reinforced with respective layered silicates, ceramic nanoparticles and carbon nanotubes will be addressed. Particular attention is paid on the structure–property relationship of such novel high-performance polymer nanocomposites.

Structural and mechanical properties of polymer nanocomposites

3.10 - Nitroxide-Mediated Polymerization

Low dielectric constant polymers for microelectronics

Polymer/layered silicate (clay) nanocomposites: An overview of flame retardancy

The continuing demand for polymeric materials with a unique combination of properties has brought forth a sizable research effort concerning the use of trifluoromethyl substituents, particularly the 1,1,1,3,3,3-hexafluoroisopropylidene (HFIP) function derived from the incorporation of hexafluoroacetone (HFA) into the monomer. This work had its beginnings approximately 25 years ago when Rogers briefly reported in a patent the preparation of polyimides (PIs) from an hexafluoroisopropylidenebrideged diamine [1,2]. Since then numerous efforts have been made toward the synthesis, characterization, and evaluation of CF3-containing polymers. Much of this information is found in patents, indicating the importance of these polymers to industry. At the present time, at least 11 known classes of polymers containing pendant or backbone-incorporated bis-trifluoromethyl groups have been reported. These polymers show promise as film formers, gas separation membranes, seals, soluble polymers, coatings, and in ot...

Polymers derived from hexafluoroacetone

The interaction between synthetic polymers and the natural environment in terms of the effects of oxygen, radiant energy, and living organisms has been extensively studied over the past two decades [1]. However, the recent trends in the preservation of the environment have created much public interest. This is due to the heavy usage of plastics as packaging materials in consumer industry. Materials used as packaging films and the like are not expected to have a long service life. Among several such materials, polyolefins have received special criticism because of their longevity and stability under soil burial conditions. The most likely degradative processes acting on buried polyolefins are simple oxidation and microbial attack, in addition to photodegmdation under the influence of UV sunlight. The disposal of plastics as refuse or litter is thus a volume problem rather than a weight problem. The relative proportion of plastics in refuse increases every day on account of their low degradability....

Patrick E. Cassidy

Papers

Polymers derived from hexafluoroacetone

A Review on Biodegradable Plastics

Intercalation and exfoliation relationships in melt-processed poly(styrene-co-acrylonitrile)/montmorillonite nanocomposites

Interactions of organic halides with a polyurethane elastomer

Poly(styrene-co-acrylonitrile)/montmorillonite organoclay mixtures: a model system for ABS nanocomposites