Topic
Polymer nanocomposite
About: Polymer nanocomposite is a research topic. Over the lifetime, 8977 publications have been published within this topic receiving 297599 citations.
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TL;DR: In this article, the thermomechanical properties of polymer nanocomposites are critically affected by polymer-particle wetting behavior, and it was found that low molecular weight polystyrene melts with lengths <880 wet these particles.
Abstract: We show that the thermomechanical properties of polymer nanocomposites are critically affected by polymer-particle wetting behavior. Silica nanoparticles grafted with dense polystyrene brushes of degree of polymerization 1050 are blended with polystyrene melts to form nanocomposites. It was found that low molecular weight (MW) polystyrene melts with lengths <880 wet these particles. Concurrently, the glass transition temperature (Tg) of the nanocomposite increases. At higher MW, the matrix does not wet the particles and the Tg decreases. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 2944–2950, 2006
189 citations
TL;DR: In this article, the authors performed morphological, structural, thermal and optical characterization of polyaniline-silver nanocomposite and found that the electrical conductivity increases with an increase in the number of nanoparticles.
189 citations
TL;DR: In this article, a review of recent advances in the preparation and characterization of polymer nanocomposites, and their potential use in packaging applications are addressed, including their potential application in active food packaging.
Abstract: Polymer nanocomposites markedly improved packaging properties due to their nanometer size dispersion. These enhancements include increased modulus and strength, decreased gas permeability, and increased water resistance. Additionally, biologically active ingredients can be added to impart the desired functional properties to the resulting packaging materials. Accordingly, polymer-based nanocomposites packaging materials with bio-functional properties have a huge potential for application in the active food packaging industry. In this review, recent advances in the preparation and characterization of polymer nanocomposites, and their potential use in packaging applications are addressed.
189 citations
TL;DR: Solution-processable ferroelectric polymer nanocomposites are developed as a new form of electrocaloric materials that can be effectively operated under both modest and high electric fields at ambient temperature.
Abstract: Solution-processable ferroelectric polymer nanocomposites are developed as a new form of electrocaloric materials that can be effectively operated under both modest and high electric fields at ambient temperature. By integrating the complementary properties of the constituents, the nanocomposites exhibit state-of-the-art cooling energy densities. Greatly improved thermal conductivity also yields superior cooling power densities validated by finite volume simulations.
188 citations
TL;DR: In this paper, a 1D core-shell structure BaTiO3@Al2O3 nanofibers (BT@Al 2O3 nfs) was synthesized via coaxial electrospinning.
Abstract: Inorganic/polymer nanocomposites, using one-dimensional (1D) core–shell structure BaTiO3@Al2O3 nanofibers (BT@Al2O3 nfs) as fillers and poly(vinylidene fluoride) (PVDF) as the polymer matrix, have been prepared. The core–shell structure BT@Al2O3 nfs have been synthesized via coaxial electrospinning. The breakdown strength (Eb) and discharged energy density of the nanocomposites can be significantly improved by creating an insulating Al2O3 shell layer with moderate dielectric constant on the surfaces of BT nanofibers to form a moderate interfacial area. The Al2O3 shell layer could effectively confine the mobility of charge carriers, which reduces energy loss by reducing the Maxwell–Wagner–Sillars (MWS) interfacial polarization and space charge polarization between the fillers and the polymer matrix. As a result, the nanocomposite films filled with 5 vol% BT@Al2O3 nfs exhibit a excellent discharge energy density of 12.18 J cm−3 at 400 MV m−1, which is ≈254% over bare PVDF (4.8 J cm−3 at 350 MV m−1) and ≈1015% greater than the biaxially oriented polypropylenes (BOPP) (≈1.2 J cm−3 at 640 MV m−1). The work here indicates that this promising state-of-the-art method of preparing high energy density nanocomposites can be used in the next generation of dielectric capacitors.
188 citations