Composite Materials – TechConnect Briefs

Composites with Multi-Walled Carbon Nanotubes

McAndrew T.P., Havel M., Korzhenko A., Delprat P., Arkema Inc., US

Multi-walled carbon nanotubes are of great interest – primarily based upon their electrical and mechanical properties. The main application is in polymer composites – where at low concentrations they provide substantial improvements in electrical and [...]

Challenges and Opportunities in the Scale-up of Cellulose Nanofibril Production

Gardner D.J., University of Maine, US

Technologies to produce cellulose nanofibrils via either mechanical means (CNF) or chemical means (cellulose nanocrystals (CNC)) have improved dramatically over recent years and a limited number of companies and research labs can produce cellulose nanofibrils [...]

Asphalt bitumen modified with carbon nanotubes

Boyer L., Barrera E.V., Rice University, US

We have introduced carbon nanotubes into asphalt bitumen (paving asphalt with no stone or sand aggregate) to investigate the effect on (1) strength, (2) viscoelasticity, and (3) exposure to microwave radiation.

Mechanical Properties of Reduced Graphene Polymer Composites

Xu P., Panchapakesan B., University of Louisville, US

In this paper, we report load transfer and mechanical properties of chemically derived single layer graphene (SLG) as reinforcements in poly (dimethyl) siloxane (PDMS) composites. Shear mixing reduced graphene sheets in polymers resulted in a [...]

Self-assembled Magnetic Silica Nano-rods and Micro-platelets as smart reinforcements for polymer-composites

Furlan M., Lattuada M., University of Fribourg, CH

In this work, we propose a new versatile self-assembly technique to obtain large quantities of silica-based magnetic nano and micro-rods and of magnetic microplatelets, which can be easily oriented by weak magnetic fields. Our process [...]

Aulana and NgaPure : Novel Nanogold Coloured and Antimicrobial Nanosilver Woollen Textiles: The Journey of Discovery, the Nanoscience and Pathway to Commercialisation

Johnston J.H., Noble Bond Ltd, NZ

Aulana and NgaPure products innovatively combine the nanoscience of gold and silver with their affinity for sulfur in cystine amino acids of wool fibres in a synergistic way, to nanofunctionalise wool and produce a boutique [...]

The Synthesis and Characterisation of Photocatalytic Silver/Silver Halide Nanocomposites of Kraft Paper Fibres and Calcium Silicate

Tate E.W., Johnston J.H., Victoria University of Wellington, New Zealand, NZ

Recently it has been shown that hybrid silver/silver halide nanoparticles exhibit interesting photocatalytic properties, and are known plasmonic photocatalysts. Enhanced photostability and photocatalysis are observed in the nanoparticles due to the surface plasmon resonance of [...]

Facile in-situ combustion synthesis of TiC reinforced aluminum matrix composites

Nabawy A.M., Khalil K.A., Al-Ahmari A.M., King Saud University, SA

Using high frequency induction heat-assisted combustion synthesis (HFIHACS) as a facile manufacturing methods followed by combustion in tube furnace under inert gas, composites of TiC reinforced aluminum matrix have been in-situ synthesized directly from elemental [...]

Preparation of Calcium Zirconate –Silica nano composite and consideration of thermal, electrical and photocatalitical properties

Kermani N., Kargar Razi M., Azad University Tehran North Branch, IR

In this research, Calcium Zirconate–Silica nanocomposite was synthesized and its thermal, electrical constant and photocatalitical properties were evaluated. For preparation of CaZrO3/SiO2, nano powder was synthesized by sol-gel method then was calcinated at 700- 1000 [...]

New Nanocomposites – Controlled Capture of Nanoparticles in Scrolled Nanosheets

Adireddy S., Yao Y., Vargas J.M., Spinu L., Wiley J.B., University of Neworleans, US

The ability to encapsulate linear nanoparticle chains in scrolled nanosheets is an important advance in the formation of nanocomposites. Recent work in our group resulted in the in situ formation of peapod-like structures based on [...]

Nanoparticle release quantification of sanding-induced airborne particle emissions from artificially aged/weathered nanocomposites

Goehler D., Stintz M., Technical University of Dresden, DE

Risks of substances to health, safety and environment arise by the coexistence of material toxicity and material exposure [1]. In view of the steadily increasing production, processing and use, a risk assessment of nanomaterials is [...]

Nanomaterials as Nanocomposite Fillers: Cytotoxicity at Different Stages of Their Life Cycle

Mas del Molino E., Vilar G., Janer G., Fernández-Rosas E., Vázquez-Campos S., LEITAT Technological Center, ES

Since the production and utilities of NM have been growing exponentially we have decided to perform cell viability tests and mechanistic assays using different cell lines to assess the potential cytotoxicity of raw MWCNT, hydrophilic [...]

SWCNT/Inorganic polymer nanocomposite: a new class of Transparent Conductor and UV-Vis Photo – Generator

Bose S., Balaji S., Debnath R., Jadavpur University, IN

Synthesis of a light sensitive SWCNT/(Pb, Zn)-phosphate glass composite and it’s optical, light induced ESR, electronic and optoelectronic properties are reported. Absorption spectrum of SWCNTs of the composite differs from that of its film. Since [...]

Optimization of the electrical parameters of nematic and discotic liquid crystalline materials due to the dispersion of nano particles, nano tubes and quantum dots for display and photo-voltaic applications

Dhar R., Kumar S., Dabrowski R., University of Allahabad, IN

Electrical parameters of the nano particle and carbon nano tube dispersed room temperature liquid crystalline materials 5CB and 6CHBT have been determined. Due to the dispersion, nematic to isotropic transition temperatures are highly affected. Threshold [...]

Flexible fluorine-doped tin oxide based composite electrodes for photovoltaic applications

Giusti G., Puyoo E., Langley D.P., Consonni V., Bellet D., Laboratoire des Matériaux et du Génie Physique (LMGP), FR

Fluorine-doped tin dioxide (FTO) thin films were deposited via ultrasonic spray pyrolysis directly on preheated polyimide (PI) - DuPont™ Kapton® polyimide flexible film substrates. All the FTO films deposited on PI substrates exhibited polycrystalline cassiterite [...]

Structure and Electrical Properties of Polypropylene-Graphite-Carbon black/ Nanotubes Hybrid Conducting Composites

Ramanujam B.T.S., Mehta H., Khare A., Radhakrishnan S., Maharashtra Institute of Technology, IN

Low cost conducting composites are required for bipolar plates of fel cells and battery electrodes. Polypropylene filled with graphite has been tried in the past but acceptable level of conductivity is reached only at high [...]

Frequency-Dependent Dielectric Properties Optimization of Polymer-Based-BT Nanocomposites for High Energy Density Applications

Hossain M.E., Liu S., Li J., Liu S., O’Brien S., The City College of New York of CUNY, US

Nanodielectric materials become one of the new materials to play a sole role in sustainable and clean energy production, energy transportation, energy storage, and end usage in terms of energy storage capabilities due to the [...]

Femtosecond transient absorption of plasmonic gold nanoparticles embedded in mesoporous TiO2 matrix: electron injection study

Aiboushev A., Kostrov A., Gostev F., Nadtochenko V., N.N. Semenov Institute of Chemical Physics Russian Academy of Sciences, RU

Gold nanoparticles (AuNP) embedded in mesoporous films of wide band gap semiconductors such as TiO2 are used for promising applications in solar cells, visible light-sensitive photocatalysts, and biosensors developed on the basis of the surface [...]

Electrochemical Oxidation of Ammonia Borane on Au-Ag nanoparticles Modified Poly (p-aminophenol) film Glassy Carbon Electrode

Karabi̇beroğlu Ş., Dursun Z., Ege University, TR

In this study, poly (p-aminophenol) film glassy carbon electrode (PPAP/GCE) was prepared by electrochemical polymerization and then Au-Ag nanoparticles created by electrochemical reduction from their solutions on the PPAP/GCE surface by cyclic voltammetry. The surface [...]

Comparison of Electrocatalytic Activity of poly(p-aminophenol) Film Supported Au-M (M= Pt, Cu and Ag) Bimetallic Nanoparticles for Oxidation of Sodium Borohydride

Karabi̇beroğlu Ş., Dursun Z., Ege University, TR

In this study, a poly (p-aminophenol) film (PPAP) and bimetallic nanoparticles modified polymer film electrodes (GCE), Au-Pt/PPAP/GCE, Au-Ag/PPAP/GCE, Au-Cu/PPAP/GCE were prepared by electrochemical techniques. The modified electrode surfaces were characterized using atomic force spectroscopy, scanning [...]

Nanocellulose and Their Thermoplastic Nanocomposites

Lim D.-Y., Lee E-S, Yoon M.-J., Kim K-Y, Korea Institute of Industrial Technology, KR

Nanocellulose fibers with the average diameter below 100nm were successfully obtained by a high shear microfluidizer. Their large surface area and nano-scale dimensions can lead to the emerging materials for reinforcements in polymer composites, differentiating [...]

Papers: