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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 paper, a new physical-assisted casting method was developed to tune the orientation of elongated BaTiO3 nanowires in a P(VDF-CTFE) matrix.
Abstract: In practical application, new dielectric capacitors with greater energy density at lower operating voltage will be promising candidates for high-performance electrical devices. Theoretically, it is possible to achieve large electric polarization at a low electric field via embedding aligned ferroelectric nanowires in a polymer matrix, which could release high energy density. However, in terms of practice, the design of nanocomposites with aligned nanowires poses a great technical challenge. Here, a new physical-assisted casting method was developed to tune the orientation of elongated BaTiO3 nanowires in a P(VDF-CTFE) matrix. In the Z-aligned nanocomposites, a large (Dmax − Pr) value of 9.93 μC cm−2 can be induced at a low electric field of 2400 kV cm−1 by aligning 3 vol% ferroelectric BaTiO3 nanowires in the poling direction. Compared with X–Y-aligned nanocomposites even at a high electric field of 3400 kV cm−1, the Z-aligned nanocomposites could exhibit simultaneously an enhanced energy density of 10.8 J cm−3 and a discharge efficiency of 61.4% at 2400 kV cm−1. To the best of our knowledge, among ferroelectric nanocomposites, this is the highest energy density ever obtained at such a low electric field. This work is of critical significance in making dielectric nanocomposites viable for energy storage devices in current electrical and electronic applications.
164 citations
Patent•
10 Jul 1995TL;DR: In this article, a process of forming a composite material comprising a polymer matrix comprising a polymeric material and dispersed particles selected from the group consisting of platelet or fibrillar particles having average thicknesses of less than 50 A and a maximum thickness of more than 100 A and fibrils having an average diameter equal to or less than about 200 A and having an organo metallic residue species covalently bonded to said particles.
Abstract: This invention relates to a process of forming a composite material comprising a polymer matrix comprising a polymeric material and dispersed particles selected from the group consisting of platelet or fibrillar particles having average thicknesses of less than 50 A and a maximum thickness of less than about 100 A and fibrils having an average diameter equal to or less than about 200 A and a maximum diameter of about 200 A and having an organo metallic residue species covalently bonded to said particles, said organo metallic species having a moiety which is compatible with a polymer species in the polymer matrix, or said species having a moiety which is covalently bonded to a polymer species in the polymer matrix or a combination thereof, said dispersed particles being present in an amount less than about 60 % by weight of the composite material and to the composite material formed by such process.
164 citations
TL;DR: A facile, plasma-assisted, biomimetic, environmentally friendly method was developed to enhance the interfacial interactions in polymer nanocomposites by modifying the surface of polypropylene, indicating that polydopamine-functionalized polypropane is a promising material for various high-performance applications.
Abstract: Polypropylene is one of the most widely used commercial commodity polymers; among many other applications, it is used for electronic and structural applications. Despite its commercial importance, the hydrophobic nature of polypropylene limits its successful application in some fields, in particular for the preparation of polymer nanocomposites. Here, a facile, plasma-assisted, biomimetic, environmentally friendly method was developed to enhance the interfacial interactions in polymer nanocomposites by modifying the surface of polypropylene. Plasma treated polypropylene was surface-modified with polydopamine (PDA) in an aqueous medium without employing other chemicals. The surface modification strategy used here was based on the easy self-polymerization and strong adhesion characteristics of dopamine (DA) under ambient laboratory conditions. The changes in surface characteristics of polypropylene were investigated using FTIR, TGA, and Raman spectroscopy. Subsequently, the surface modified polypropylene wa...
164 citations
20 Jul 2009
TL;DR: Gupta et al. as discussed by the authors presented the history of the incorporation of carbon nanomaterials into polymer media, including the role of surface modification with additives, and discussed the challenges and opportunities of carbon-based polymeric nanocomposites.
Abstract: Overview of Challenges and Opportunities, RK Gupta, EB Kennel, and K-J Kim History of Carbon Nanomaterials, A Oberlin and GG Tibbetts The Incorporation of Nanomaterials into Polymer Media, HC Ashton Mixing Terminology, Nanoparticle Dispersion and Reinforcement by Surface Modification with Additives, K-J Kim and JL White Surface Modification of Carbon Nanofibers, ML Lake, DG Glasgow, GG Tibbetts, and DJ Burton Compounding Layered Silicate Nanocomposites, P Andersen Dispersion of Agglomerated Nanoparticles in Rubber Processing, K-J Kim and JL White The Rheology of Polymeric Nanocomposites, S Bhattacharya, RK Gupta, and S Bhattacharya Fundamentals of Carbon-Based Nanocomposites, EV Barrera, E Corral, M Shofner, and D Simeon Polymer Nanocomposites Containing Vapor-Grown Carbon Fibers Aligned by Magnetic or Electric Field Processing, T Takahashi and K Yonetake Utility of Carbonaceous Nanofillers in Elastomers and Thermoplastic Elastomeric Gels, JK Kim, M Pagalicawan, and V Sridhar Nanocomposites of Liquid Crystalline Polymers Dispersed in Polyester Matrices, CH Song and AI Isayev Transmission Electron Microscopy and Related Techniques in the Structure Characterization of Polymer Nanocomposites, VK Berry Mechanical Properties of Clay-Containing Polymeric Nanocomposites, LA Utracki Appendices, Mass Transport through Polymer Nanocomposites, D De Kee and KJ Frederic Flammability Properties of Polymer Nanocomposites, J Zhu and CA Wilkie Electrical Properties of Nanoparticle-Filled Polymers, EB Kennel Thermal Conductivity of Polymer Nanocomposites, S Agarwal and RK Gupta Bio-Based Nanocomposites from Functionalized Plant Oils, C-K Hong, J Lu, and RP Wool
164 citations
TL;DR: The new tri-axial electrospinning process developed in this work provides a platform to fabricate structural nanomaterials, and the core-shell polymer-PL nanocomposites produced have significant potential applications for oral colon-targeted drug delivery.
164 citations