Polymer layered-silicate

Bartholmai, M. and Schartel, B. 2004. Layered silicate polymer nanocomposites New approach or illusion for fire retardancy Investigations of the potentials and the tasks using a model system. Polymers for Advanced Technologies 15 355-64. 

Due to recent improvements in visualization of nanoscopic material with enhanced resolution, huge advances in the characterization technology have been widespread in all the nanotechnology disciplines, compared to just about 20 years ago. A few examples of nanoscopic materials that are less than Ipm are illustrated in Figure 1.2. Current efforts in the nanoparticle—polymer field go into very small metallic and semiconductor nanoparticles with 1—2nm diameter, and use of micron-sized fillers (e.g., layered silicates) (Polymer-Nanoparticle Composites Part 1 (Nanotechnology), 2010). 

Komori, Y. and Kurada, K. (2000). Layered silicate - Polymer Intercalation Compounds, In Pinnavaia, T.J. and Beal, G.W. (eds). Polymer Layered Silicate Nanocomposites, Wiley, New York. 

Fig.1 Schematic illustration of different possible structures of layered silicate polymer composite (a) microcomposite (b) intercalated nanocomposite (c) exfoliated nanocomposite [12]...

Varghese, S., Karger-Kocsis, J. Natural rubber-based nanocomposites by latex compounding with layered silicates. Polymer 44, 4921-4927 (2003)... 

Vaia, R. A. Giannelis, E. P., Liquid Crystal Polymer Nanocomposites Direct Intercalation of Thermotropic Liquid Crystalline Polymers into Layered Silicates. Polymer 2001,42,1281-1285. 

The results reported on the thermal and thermooxidative decomposition of layered silicate nanocomposites are rather contradictory and do not lead to unambiguous or consistent conclusions. The results vary from enhanced decomposition, to no significant influence, to a strong improvement depending on the source and system discussed. The influence on thermal decomposition differs strongly from nanocomposite to nanocomposite. What is more, often the product release is changed rather than the primary decomposition reactions. The diffusion of the products is hindered by the decreased permeability for nanocomposites 5 wt% layered silicate-polymer nanocomposites show a reduction in gas permeability of around 40 to 60%, even for small gas molecules such as nitrogen and... 

Carbon nanofiberA iapor grown carbon nanofiber Carbon nanotubes Fluorinated synthetic mica Graphite oxide Layered double hydroxide Montmorillonite Multiwall carbon nanotubes Organically modified montmorillonite Polymer layered-silicate/Polymer-layered silicate nanocomposite... 

Based on the interaction between the polymer matrix and layered silicate polymer layered silicate nanocomposites are classified into intercalated and exfoliated nanocomposites [56-58]. Figure 7 represents the intercalated and exfoliated nanocomposites along with the conventionally filled microcomposite. 

Ratiia D, Becker O, Krishnainurthy R, Simon G P and Varley R J (2003) Nanocomposites based on a combination of epoxy resin, hyperbranched epoxy and a layered silicate. Polymer 44 7449-7457. 

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