Polymer nanocomposites coatings

Polymer nanocomposites are being investigated with regard to their application as substitute of metals in motor industry, for the reinforcement of polymer fibers and tires, as scratch-resistant and inflammable coatings, and as biocompatible materials for prosthetic use. 

Instrumentation. In studies reported so far [84], polymer nanocomposites as used in lithium batteries prepared from poly(ethylene oxide) and lithium hectorite have been investigated. Using a sample holder that could be heated, structural changes of the nanocomposites as a function of temperature could be monitored in situ. Ex situ studies of electrodeposited amorphous NiP coatings have been described [85]. 

FIGURE 4.3 Separated structures of polymer nanocomposites. (A-B) TEM images of PANi-coated Au nanoparticies. 

In overall, the use of polymer-coated CNTs produced by in situ polymerisation, whether by covalent or non-covalent methods leads to the production of polymer nanocomposites displaying much better thermomechanical, flame retardant and electrical conductive properties, even at very low nanotube loadings. As mentioned above, the covalent approach allows the formation of a strong interface between the nanotube and polymer matrix due to strong chemical bonding of polymer molecules to the CNT surface. The in situ polymerisation technique also enables the preparation of composites with very high nanotube loadings. 

Keywords Conjugated polymers, corrosion, corrosion protection, nanocomposite coatings... 

Anticorrosion Coatings Based on Conjugated Polymers 553 Table 10.4 Classes for CPs nanocomposite coatings. 

Conductive polymer nanocomposites may also be used in different electrical applications such as the electrodes of batteries or display devices. Linseed oil-based poly(urethane amide)/nanostuctured poly(l-naphthylamine) nanocomposites can be used as antistatic and anticorrosive protective coating materials. Castor oil modified polyurethane/ nanohydroxyapatite nanocomposites have the potential for use in biomedical implants and tissue engineering. Mesua ferrea and sunflower seed oil-based HBPU/silver nanocomposites have been found suitable for use as antibacterial catheters, although more thorough work remains to be done in this field. ° Sunflower oil modified HBPU/silver nanocomposites also have considerable potential as heterogeneous catalysts for the reduction of nitro-compounds to amino compounds. Castor oil-based polyurethane/ epoxy/clay nanocomposites can be used as lubricants to reduce friction and wear. HBPU of castor oil and MWCNT nanocomposites possesses good shape memory properties and therefore could be used in smart materials. ... 

N. Jiratumnukul and R. Intarat, Ultraviolet-curable epoxidized sunflower oU/ organoclay nanocomposite coatings ,/AppZ Polym Sci, 2008,110, 2164-7. 

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