In-Situ X-ray Deformation Study of Fluorinated Multiwalled Carbon Nanotube and Fluorinated Ethylene−Propylene Nanocomposite Fibers

2006 ◽  
Vol 39 (16) ◽  
pp. 5427-5437 ◽  
Author(s):  
Xuming Chen ◽  
Christian Burger ◽  
Dufei Fang ◽  
Igors Sics ◽  
Xuefen Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Ethylene Propylene ◽  
X Ray ◽  
Nanocomposite Fibers ◽  
Fluorinated Ethylene Propylene

The Preparation and Characterization of Polybenzoxazole Copolymerized with Multiwalled Carbon Nanotube via Direct Friedel-Crafts Acylation

2014 ◽  
Vol 989-994 ◽  
pp. 560-563
Author(s):  
Yong Chen ◽  
Jun Qian ◽  
Qi Xin Zhuang ◽  
Zhe Wen Han
Keyword(s):  
Carbon Nanotube ◽  
Polyphosphoric Acid ◽  
Multiwalled Carbon Nanotube ◽  
X Ray Diffraction ◽  
Acylation Reaction ◽  
Multiwalled Carbon ◽  
Sem Images ◽  
X Ray ◽  
Electronic Microscope

Multiwalled carbon nanotube (MWCNT) was subjected a copolymerization reaction with 4, 6-diaminoresorcinol salt (DAR•2HCl) and terephthalic acid (TA) in polyphosphoric acid (PPA) by Friedel-Crafts acylation reaction without any acid treatment or modification. The structure and morphology of the as-prepared poly (p-phenylene benzobisoxazole) (PBO)/MWCNT nanocomposites were characterized by X-ray diffraction (XRD) and scanning electronic microscope (SEM). The SEM images indicated that MWCNTs can disperse in PBO matrix uniformly without agglomeration and MWCNTs have been introduced into PBO matrix by covalent bonding via Friedel-Crafts acylation between MWCNTs and TA.

Shear-induced anisotropy of concentrated multiwalled carbon nanotube suspensions using x-ray scattering

2011 ◽  
Vol 55 (5) ◽  
pp. 1033-1058 ◽  
Author(s):  
Saswati Pujari ◽  
Sameer Rahatekar ◽  
Jeffery W. Gilman ◽  
Krzysztof K. Koziol ◽  
Alan H. Windle ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Induced Anisotropy ◽  
Multiwalled Carbon ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Fabrication of acrylic acid grafted guar gum-multiwalled carbon nanotube hydrophobic membranes for transdermal drug delivery

RSC Advances ◽  
2015 ◽  
Vol 5 (52) ◽  
pp. 41736-41744 ◽  
Author(s):  
Arindam Giri ◽  
Tridib Bhunia ◽  
Luna Goswami ◽  
Asit Baran Panda ◽  
Abhijit Bandyopadhyay
Keyword(s):  
Carbon Nanotube ◽  
Acrylic Acid ◽  
Guar Gum ◽  
Diclofenac Sodium ◽  
Composite Membranes ◽  
Multiwalled Carbon Nanotube ◽  
Hydrophobic Drug ◽  
Multiwalled Carbon ◽  
Hydrophobic Membranes

Environmentally stable acrylic acid grafted guar gum-carboxy functionalized multiwalled carbon nanotube in situ composite membranes have been developed and characterized for sustained release of a hydrophobic drug, diclofenac sodium.

Double-segregated multiwalled carbon nanotube/silicone composites with large electrical to thermal conductivity ratios via in-situ silicone emulsion polymerization

2020 ◽  
Vol 54 (23) ◽  
pp. 3447-3456
Author(s):  
Dongouk Kim ◽  
Sang-Eui Lee ◽  
Yoonchul Sohn
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
In Situ Polymerization ◽  
Multiwalled Carbon Nanotube ◽  
Layer By Layer ◽  
Multiwalled Carbon ◽  
Water Solvent ◽  
Carbon Nanotube Network ◽  
Silicone Emulsion

Polymer composites with a high electrical conductivity ( σ) to thermal conductivity ( k) ratio have been intensively investigated in recent years. While highly conductive materials, such as metallic fillers or conducting polymers, were used to enhance σ, microstructural engineering was used to decrease k by forming porous structures, such as aerogels or 3D networks. These structures, however, were mechanically vulnerable and could only have limited applications. In this study, multiwalled carbon nanotube /silicone composites with a high σ/k ratio were developed by forming a double-segregated multiwalled carbon nanotube network in the porous body of the composites. The unique microstructure of the composites was created by a novel fabrication process: layer-by-layer deposition with in-situ polymerization of silicone emulsion particles dispersed in a water solvent. This novel process yielded very thick films, >200 µm, with high σ/k values, ∼2 × 104 (S/m)/(W/m·K). These high σ/k composites can be used for various applications, such as resistive heating elements, thermoelectric materials, and wearable thermotherapy.

Fabrication of polystyrene/multiwalled carbon nanotube composite films synthesized by in situ microemulsion polymerization

2012 ◽  
Vol 53 (6) ◽  
pp. 1327-1336 ◽  
Author(s):  
Archana S. Patole ◽  
Shashikant P. Patole ◽  
Ji-Beom Yoo ◽  
Jeong-Ho An ◽  
Tae-Ho Kim
Keyword(s):  
Carbon Nanotube ◽  
Composite Films ◽  
Multiwalled Carbon Nanotube ◽  
Microemulsion Polymerization ◽  
Multiwalled Carbon ◽  
Carbon Nanotube Composite

In situ polymerization approach to poly(arylene ether nitrile)-functionalized multiwalled carbon nanotube composite films: thermal, mechanical, dielectric, and electrical properties

2018 ◽  
Vol 25 (1) ◽  
pp. 25-29
Author(s):  
Jiachun Zhong ◽  
Heng Guo ◽  
Jian Yang ◽  
Xiaobo Liu
Keyword(s):  
Carbon Nanotube ◽  
In Situ Polymerization ◽  
Composite Films ◽  
Multiwalled Carbon Nanotube ◽  
Nucleophilic Aromatic Substitution ◽  
Aromatic Substitution ◽  
Multiwalled Carbon ◽  
Arylene Ether ◽  
Quality Dispersion

AbstractPoly(arylene ether nitrile) (PEN)-functionalized multiwalled carbon nanotube (MWNT) composites were successfully prepared via anin situpolymerization method based on the combination of nucleophilic aromatic substitution polymerization with simple acylate-functionalized MWNTs (MWNTs-COCl) in the presence of nitrile monomers. The structure and morphology of PEN-MWNT composites were characterized using Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. The improvement in the thermal stability and mechanical properties of PEN-MWNT films was achieved because of the good-quality dispersion of MWNTs and strong interfacial interaction between the PEN matrix and MWNTs. The most important result is that the dielectric constant and electrical conductivity can be remarkably enhanced by a high MWNT content.

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