scholarly journals Structural, capacitive and energy characteristics of electrochemical electrodes based on polyaniline/multi-walled carbon nanotube nanocomposites

2020 ◽  
pp. 81-86
Author(s):  
N. A. Davletkildeev ◽  
◽  
I. A. Lobov ◽  
A. O. Nikiforova ◽  
D. V. Sokolov ◽  
...  
Keyword(s):  
Oxidative Polymerization ◽  
Specific Capacity ◽  
High Porosity ◽  
Multiwalled Carbon ◽  
Energy Characteristics ◽  
Multi Walled Carbon Nanotube ◽  
Electrochemical Electrodes ◽  
Argon Ions ◽  
Functionalized Nanotubes

Polyaniline nanocomposites with nitrogen-doped multiwalled carbon nanotubes, initial and functionalized argon ions are prepared by the in-situ chemical oxidative polymerization of aniline. The morphology of obtained nanocomposites are studied by microscopic methods. The capacitive and energy characteristics of electrochemical electrodes formed by pressing nanocomposites have been studied by cyclic voltammetry. It is shown that an electrode based on a nanocomposite with functionalized nanotubes has the highest specific capacity and energy due to the high porosity of the surface. However, the low mechanical strength of this electrode leads to a decrease in its cyclic stability

Electrical conductivity, isothermal stability and amine sensing studies of a synthetic poly-o-toluidine/multiwalled carbon nanotube/Sn(iv) tungstate composite ion exchanger doped with p-toluene sulfonic acid

2015 ◽  
Vol 7 (5) ◽  
pp. 2077-2086 ◽  
Author(s):  
Asif Ali Khan ◽  
Shakeeba Shaheen
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Sulfonic Acid ◽  
Oxidative Polymerization ◽  
Multiwalled Carbon ◽  
Electrically Conductive ◽  
Toluene Sulfonic Acid ◽  
Composite Ion Exchanger

An electrically conductive poly-o-toluidine (POT) composite doped with p-toluene sulfonic acid (pTSA) was prepared using multiwalled carbon nanotubes (MWCNTs) and Sn(iv) tungstate (ST) by in situ oxidative polymerization.

Microspherical Poly(methyl methacrylate)/Multiwalled Carbon Nanotube Composites Prepared via In Situ Dispersion Polymerization

2007 ◽  
Vol 7 (11) ◽  
pp. 4045-4048 ◽  
Author(s):  
Hun-Sik Kim ◽  
Seung Jun Myung ◽  
Rira Jung ◽  
Hyoung-Joon Jin
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Dispersion Polymerization ◽  
Multiwalled Carbon ◽  
Poly Methyl Methacrylate ◽  
Transmission Electron ◽  
Multi Walled Carbon Nanotube ◽  
Nanotube Composites

In this study, microspherical poly(methyl methacrylate)/multi-walled carbon nanotube (PMMA/MWCNT) composites were directly prepared by in situ dispersion polymerization using poly (N-vinylpyrrolidone) in methanol media. PMMA/MWCNT microspheres having a diameter of 2.6∼3.9 μm and a molecular weight of 58,000∼65,000 g/mol with a 15.7∼19.5% coefficient of variation (Cv) were synthesized. The morphology of the synthesized composite was investigated using scanning electron microscopy and transmission electron microscopy. The experimental results demonstrated that MWCNTs are well dispersed and embedded in the final PMMA/MWCNT microspheres. The prepared PMMA/MWCNT microspheres were investigated in terms of their capacity to serve as an electrorheological (ER) materials.

scholarly journals NIR responsive tumor vaccine in situ for photothermal ablation and chemotherapy to trigger robust antitumor immune responses

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Lirong Zhang ◽  
Jingjing Zhang ◽  
Lixia Xu ◽  
Zijian Zhuang ◽  
Jingjin Liu ◽  
...  
Keyword(s):  
Immune Responses ◽  
Tumor Vaccine ◽  
Oxidative Polymerization ◽  
Delivery Mode ◽  
Tumor Treatment ◽  
One Pot ◽  
Photothermal Ablation ◽  
Prolonged Retention ◽  
The One

Abstract Background Therapeutic tumor vaccine (TTV) that induces tumor-specific immunity has enormous potentials in tumor treatment, but high heterogeneity and poor immunogenicity of tumor seriously impair its clinical efficacy. Herein, a novel NIR responsive tumor vaccine in situ (HA-PDA@IQ/DOX HG) was prepared by integrating hyaluronic acid functionalized polydopamine nanoparticles (HA-PDA NPs) with immune adjuvants (Imiquimod, IQ) and doxorubicin (DOX) into thermal-sensitive hydrogel. Results HA-PDA@IQ NPs with high photothermal conversion efficiency (41.2%) and T1-relaxation efficiency were using HA as stabilizer by the one-pot oxidative polymerization. Then, HA-PDA@IQ loaded DOX via π-π stacking and mixed with thermal-sensitive hydrogel to form the HA-PDA@IQ/DOX HG. The hydrogel-confined delivery mode endowed HA-PDA@IQ/DOX NPs with multiple photothermal ablation performance once injection upon NIR irradiation due to the prolonged retention in tumor site. More importantly, this mode enabled HA-PDA@IQ/DOX NPs to promote the DC maturation, memory T cells in lymphatic node as well as cytotoxic T lymphocytes in spleen. Conclusion Taken together, the HA-PDA@IQ/DOX HG could be served as a theranostic tumor vaccine for complete photothermal ablation to trigger robust antitumor immune responses.

Synthesis and Characterization of Poly(2,5-benzimidazole) (ABPBI) Grafted Carbon Nanotubes

2009 ◽  
Vol 1240 ◽  
Author(s):  
Ji-Ye Kang ◽  
Su-Mi Eo ◽  
Loon-Seng Tan ◽  
Jong-Beom Baek
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Interfacial Adhesion ◽  
Synthesis And Characterization ◽  
Acylation Reaction ◽  
Single Walled Carbon Nanotube ◽  
Mechanical And Electrical Properties ◽  
Multi Walled Carbon Nanotube

AbstractSingle-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT) were functionalized with 3,4-diaminobenzoic acid via “direct” Friedel-Crafts acylation reaction in PPA/P2O5 to afford ortho-diamino-functionalized SWCNT (DIF-SWCNT) and MWCNT (DIF-MWCNT). The resultant DIF-SWCNT and DIF-MWCNT showed improved solubility and dispersibility. To improve interfacial adhesion between CNT and polymer matrix, the grafting of ABPBI onto the surface of DIF-SWCNT (10 wt%) or DIF-MWCNT (10 wt%) was conducted by simple in-situ polymerization of AB monomer, 3,4-diaminobenzoic acid dihydrochloride, in PPA. The resultant ABPBI-g-MWCNT and ABPBI-g-SWCNT showed improved the mechanical and electrical properties.

Zinc Oxide/Polyaniline Transparent Conductive Film Prepared by In Situ Polymerization Deposition

2014 ◽  
Vol 997 ◽  
pp. 368-370
Author(s):  
Ping Zhong ◽  
Lin Xiu Cheng ◽  
Xing Lu
Keyword(s):  
Zinc Oxide ◽  
Oxidative Polymerization ◽  
Optimal Conditions ◽  
Chemical Oxidative Polymerization ◽  
Reaction Conditions ◽  
Transparent Conductive Film ◽  
Conductive Film

In this paper，ZnO/PANI transparent conductive film has been prepared by in situ chemical oxidative polymerization, APS as an oxidant. The conductivity and transmittance of ZnO/PANI was measured. It has been investigated of the effects of reaction conditions and the doping component on conductivity, transmissivity and adhesion. With the increase of doping ZnO, the conductivity of ZnO/PANI transparent conductive film, transmittance and adhesion reduced. The optimal conditions is that the concentration of An, APS and PVA are 0.75 mol / L, 0.8 mol / L and 0.5wt%, respectively.

Effect of the in situ Cs treatment on field emission of a multi-walled carbon nanotube

2002 ◽  
Vol 355 (1-2) ◽  
pp. 53-58 ◽  
Author(s):  
Do-Hyung Kim ◽  
Hyeong-Rag Lee ◽  
Man-Woo Lee ◽  
Jin-Ho Lee ◽  
Yoon-Ho Song ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Multi Walled Carbon Nanotube

Mechanical Properties Of Polyaniline / Multi-walled Carbon Nanotube Composite Films

2003 ◽  
Vol 791 ◽  
Author(s):  
P. C. Ramamurthy ◽  
W. R. Harrell ◽  
R. V. Gregory ◽  
B. Sadanadan ◽  
A. M. Rao
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Films ◽  
Weight Percent ◽  
Organic Electronic Devices ◽  
Multiwalled Carbon ◽  
Multi Walled Carbon Nanotube ◽  
Contact Devices ◽  
Carbon Nanotube Composite

ABSTRACTHigh molecular weight polyaniline / multi-walled carbon nanotube composite films were fabricated using solution processing. Composite films with various weight percentages of multiwalled carbon nanotubes were fabricated. Physical properties of these composites were analyzed by thermogravimetric analysis, tensile testing, and scanning electron microscopy. These results indicate that the addition of multiwalled nanotubes to polyaniline significantly enhances the mechanical properties of the films. In addition, metal–semiconductor (composite) (MS) contact devices were fabricated, and it was observed that the current level in the films increased with increasing multiwalled nanotube content. Furthermore, it was observed that polyaniline containing one weight percent of carbon nanotubes appears to be the most promising composition for applications in organic electronic devices.

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