During the last two years, studies on the creation of nanocomposite fibers has been approached from: (1) mixing of
nanoparticles in polymer solutions, (2) polymer melt blending (compounding) of nanoparticles into fiber forming
polymers, (3) in situ polymerization of monomer/nanoparticle mixtures as well as in situ formation of nanoparticle
entities in the polymer structure and (4) study on the use of ultrasonic methods to disperse nanoparticle (especially
carbon nanotubes - CNT) into individual particulate species. It was found that traditional polymer melt blending
techniques for the creation of CNT containing nylon and polybutyleneterephthalate (PBT) fiber producing polymers
were not successful. Poor particle dispersion and weak fibers result. Mixing of nanoparticles in polymer solutions
also resulted in improper dispersion when polymer solvent is evaporated after ultrasonication. However, promising
results were achieved using in-situ polymerization of Nylon 6 under the presence of Carbon Nanotubes and
sonication treatment before polymerization. Dispersion was found to be very good compared to previously prepared
fibers from melt blending CNTs in fiber grade nylon 66 and PBT polymer. Here some “concentrates” of 20%
carbon (multiwall) nanotubes in nylon 66 and polybutylene terephthalate (PBT) were used. Studies on electrical
properties of nanocomposites show that particle size and shape, mixing time, filler concentration, composite
processing technique, and filler/matrix interactions are significant factors, affecting the electrical resistance of CNT
nanocomposites.
During the last two years, studies on the creation of nanocomposite fibers has been approached from: (1) mixing ofnanoparticles in polymer solutions, (2) polymer melt blending (compounding) of nanoparticles into fiber formingpolymers, (3) in situ polymerization of monomer/nanoparticle mixtures as well as in situ formation of nanoparticleentities in the polymer structure and (4) study on the use of ultrasonic methods to disperse nanoparticle (especiallycarbon nanotubes - CNT) into individual particulate species. It was found that traditional polymer melt blendingtechniques for the creation of CNT containing nylon and polybutyleneterephthalate (PBT) fiber producing polymerswere not successful. Poor particle dispersion and weak fibers result. Mixing of nanoparticles in polymer solutionsalso resulted in improper dispersion when polymer solvent is evaporated after ultrasonication. However, promisingresults were achieved using in-situ polymerization of Nylon 6 under the presence of Carbon Nanotubes andsonication treatment before polymerization. Dispersion was found to be very good compared to previously preparedfibers from melt blending CNTs in fiber grade nylon 66 and PBT polymer. Here some “concentrates” of 20%carbon (multiwall) nanotubes in nylon 66 and polybutylene terephthalate (PBT) were used. Studies on electricalproperties of nanocomposites show that particle size and shape, mixing time, filler concentration, compositeprocessing technique, and filler/matrix interactions are significant factors, affecting the electrical resistance of CNT
nanocomposites.
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