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Abstract  

The effect of four nucleating agents on the crystallization of isotactic polypropylene (iPP) was studied by differential scanning calorimetry (DSC) under isothermal and non-isothermal conditions. The nucleating agents are: carbon nanofibers (CNF), carbon nanotubes (CNT), lithium benzoate and dimethyl-benzylidene sorbitol. Avramișs model is used to analyze the isothermal crystallization kinetics of iPP. Based on the increase in crystallization temperature (T c) and the decrease in half-life time (τ½) for crystallization, the most efficient nucleating agents are the CNF and CNT, at concentrations as low as 0.001 mass%. Sorbitol and lithium benzoate show to be less efficient, while the sorbitol needs to be present at concentrations above 0.05 mass% to even act as nucleating agent.

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Journal of Thermal Analysis and Calorimetry
Authors:
Niko Van den Brande
,
Cor Koning
,
Paul Geerlings
,
Gregory Van Lier
,
Guy Van Assche
, and
Bruno Van Mele

important aim since the nanofiller is often much more expensive than the polymer matrix. In a recent study by Beigbeder et al. [ 11 ], polydimethylsiloxane (PDMS) was found to easily disperse multi-walled carbon nanotubes by mechanical mixing. This

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Acta Microbiologica et Immunologica Hungarica
Authors:
Éva Kiss-Tóth Dojcsák
,
Zoltán Ferenczi
,
Adrienn Szalai Juhász
,
Emőke Kiss-Tóth
,
Olivér Rácz
, and
Bertalan Fodor

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Abstract  

We prepared PANI/tetradecanol/MWNTs composites via in-situ polymerization. DSC results indicated that the composites are good form-stable phase change materials (PCMs) with large phase change enthalpy of 115 J g−1. The MWNTs were randomly dispersed in the composites and significantly enhanced the thermal conductivity of the PCMs from 0.33 to 0.43 W m−1 K−1. The form-stable PCMs won’t liquefy even it is heated at 80°C, so that the MWNTs were fixed in the composite and the phase separation of the MWNTs from PANI/tetradecanol/MWNTs composites won’t occur.

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. (6) 2.1 Hybrid nanofluid In this study, nanofluid of mixing MOL 68 (Hungarian oil) at constant temperature of 100 °C and hybrid nanoparticles of Multi-Walled Carbon NanoTube

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Acta Chromatographica
Authors:
Nabil N. Al-Hashimi
,
Rand O. Shahin
,
Amjad H. El-Sheikh
,
Malak J. Jibreel
,
Nada A. Alsakhen
,
Abdelrahim M. Alqudah
,
Muna K. Oqal
, and
Jafar I. Abdelghani

enhancement of extraction efficiency (EE%), and reducing the time of the experiment and the sample handling process [ 27 ]. A great deal of attention has been paid to the application of multi-walled carbon nanotubes (MWCNTs) in various fields of chemical

Open access

Aqueous nanostructures in water induced by electromagnetic fields emitted by EDS

A conductometric study of fullerene and carbon nanotube EDS

Journal of Thermal Analysis and Calorimetry
Authors:
V. Elia
,
L. A. Marrari
, and
E. Napoli

of EDS and of water for the 400 samples di EDS and twice-distilled water, the specific electrical conductivity of sodium bicarbonate and the excess conductivity of the 400 samples of carbon nanotube EDS (5CH) and water. It should be noted that the

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network including the technological importance of patents, the characteristics of patent clusters and the technological capabilities of competitors. The procedure and analysis are illustrated using a patent set related to synthesis of carbon nanotubes

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Abstract  

The thermal behavior of the yttria-stabilized zirconia (YSZ) and nickel oxide (YSZ–NiO) composite mixtures with the addition of graphite, multiwall carbon nanotubes and functionalized multiwall carbon nanotubes was studied. The YSZ–NiO composite is the precursor of the YSZ–Ni anode of solid oxide fuel cells. The anode exhibits a porous structure, which is usually obtained by the addition of carbon containing pore formers. Thermal analysis and X-ray diffraction evidenced that the properties of carbonaceous materials (C) and atmosphere have a strong influence on the thermal evolution of the reactions taking place upon heating the anode precursor. The dependence of both the carbon content and the chemical nature of the ceramic matrix on the thermal behavior of the composite were investigated. The discussed results evidenced important features for optimized processing of the anode.

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Journal of Radioanalytical and Nuclear Chemistry
Authors:
Wenbin Cao
,
Xingfa Gao
,
Li Qu
,
Zhenlin Chen
,
Genmei Xing
,
Jun Tang
,
Huan Meng
,
Zhen Chen
, and
Yuliang Zhao

Abstract  

It was found that Sc2@C84 or Sc2O3 could be “kicked” into the cavities of single wall carbon nanotubes (SWNTs) by reactor neutrons. Neutron irradiation also efficiently induces coalescing reactions between two fullerene cages with an atom-spacer, forming a C2m =C=C2n type of carbon nanomaterials. This process provides a new subject of studying interactions (and their consequences) of neutrons with nanoparticles, which may put new insights for neutron sciences.

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