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Items from 1 to 20 out of 5,307 results

article

Evaluation of pH and thermal stability of sorbent based on silica modified with polyaniline using high-resolution continuum source graphite furnace atomic absorption spectrometry and Raman spectroscopy

Ireneusz Sowa, Magdalena Wójciak-Kosior, Piotr Drączkowski, Wojciech Szwerc, more

Microchemical Journal > 2015 > 118 > Complete > 88-94

The stability of stationary phases on temperature and pH is especially important for separation techniques because it extends the possibilities of applications.In the present paper, the high-resolution continuum source graphite furnace atomic absorption spectrometry HR-CS-GF-AAS and confocal Raman microscopy were successfully used to evaluate stability of silica sorbent modified with polyaniline (Si-PANI)...

article

A Facile One-Pot Preparation of Dialdehyde Starch Reduced Graphene Oxide/Polyaniline Composite for Supercapacitors

Wenling Wu, Yanfeng Li, Liuqing Yang, Yingxia Ma, more

Electrochimica Acta > 2014 > 139 > Complete > 117-126

A promising supercapacitor material based on dialdehyde starch reduced graphene oxide/polyaniline (DAS-RGO/PANI) composite has been successfully synthesized via in situ oxidation polymerization. In this paper, we developed a green and facile approach to the synthesis of reduced graphene oxide (RGO) based on dialdehyde starch (DAS) using exfoliated graphite oxide (GO) as precursor. The merit of this...

article

Biocatalyzed synthesis of conducting polyaniline in reverse microemulsions

Jianbo Chen, Lijie Bai, Meiyan Yang, Hongchong Guo, more

Synthetic Metals > 2014 > 187 > Complete > 108-112

A green and efficient reaction system containing hydrogen peroxide and hemoglobin in dodecylbenzenesulfonic acid (DBSA) reverse microemulsions was developed for the polymerization of aniline. The effect of water content (Wo), reaction time, concentrations of DBSA, aniline and H ₂ O ₂ were carefully examined. It was found that the conductivity of polyaniline (PANI) changed with the...

article

Physicochemical properties of silica gel coated with a thin layer of polyaniline (PANI) and its application in non-suppressed ion chromatography

Ireneusz Sowa, Ryszard Kocjan, Magdalena Wójciak-Kosior, Ryszard Świeboda, more

Talanta > 2013 > 115 > Complete > 451-456

Physicochemical properties of a new sorbent and its potential application in non-suppressed ion chromatography (IC) have been investigated. The sorbent was obtained in a process of covering silica gel particles with a film of polyaniline (PANI).The properties of silica modified with polyaniline such as particle size, porosity, average quantity of polyaniline covering carrier and density of sorbent...

article

Stretchable Polyaniline@Epoxidized Natural Rubber Composites with Strong 3D Conductive Networks for High Performance Strain Sensors

Yifei Gao, Jinyu Sun, Xiaohui Tian, Yizhong Yuan

Macromolecular Chemistry and Physics > 224 > 6 > n/a - n/a

Flexible strain sensors are one of the core devices in wearable electronics. At present, it is still difficult to develop flexible strain sensors with high stretchability, sensitivity, and long‐term stability. In this study, polyaniline (PANI) is successfully coated onto the surface of epoxidized natural rubber (ENR) nanospheres to form the PANI@ENR composites with core–shell structure by in situ...

article

Production of biologically active non‐woven textiles from recycled polyethylene terephthalate

Raedah A. S. Alatawi, Abeer Abdulaziz H. Bukhari, Hanan M. A. Al‐Sayed, Duna A. K. Alenazi, more

Luminescence > 38 > 3 > 350 - 359

Recently, various studies have focused on the development of multifunctional non‐woven polyethylene terephthalate (PT; polyester) textiles. Herein, we introduce multifunctional non‐woven polyester fabrics by pad dry curing silver nitrate (AgNO₃) and aniline monomer into plasma‐pretreated non‐woven PT textile. This creates a nanocomposite layer of silver nanoparticles (AgNPs) and polyaniline (PANi)...

article

Influence of copolymer composition on the properties of soluble poly(aniline‐co‐2‐[2‐chloro‐1‐methylbut‐2‐en‐1‐yl]aniline)s

Lyaysan R. Latypova, Anastasiia N. Andriianova, Gulsum S. Usmanova, Renat B. Salikhov, more

Polymer International > 72 > 4 > 440 - 450

Oxidative polymerization of aniline and 2‐(2‐chloro‐1‐methylbut‐2‐en‐1‐yl)aniline gave corresponding hitherto unknown copolymers with various compositions. The copolymers were studied by several techniques, including UV–visible spectroscopy, Fourier transform IR spectroscopy, cyclic voltammetry, thermal analysis and SEM. Copolymerization of aniline with an ortho‐substituted aniline derivative leads...

article

Antibacterial and biocompatible polyaniline‐doped titanium oxide layers

Aya Ali, Sheetal Chowdhury, Mary A. Carr, Amol V. Janorkar, more

Journal of Biomedical Materials Research Part B: Applied Biomaterials > 111 > 5 > 1100 - 1111

Titanium anodization has been shown to produce crystalline oxides exhibiting photocatalytic reactions that form reactive oxygen species (ROS) when exposed to UV light. The ROS subsequently attack bacteria cells, and thus reduce bacteria attachment on titanium implant surfaces. Polyaniline (PANI) is a conductive polymer that has shown antibacterial properties when electropolymerized onto titanium....

article

Aqueous Ammonium‐Ion Supercapacitors with Unprecedented Energy Density and Stability Enabled by Oxygen Vacancy‐Enriched MoO₃@C

Juguo Dai, Xueqiang Qi, Long Xia, Qian Xue, more

Advanced Functional Materials > 33 > 10 > n/a - n/a

The use of non‐metal charge carriers such as ammonium (NH₄⁺) in electrochemical energy storage devices offers advantages in terms of weight, element abundance, and compatibility with aqueous electrolytes. However, the development of suitable electrodes for such carriers lags behind other technologies. Herein, we present a high‐performance anode material for ammonium‐ion supercapacitors based on a...

article

Zinc‐assisted synthesis of Fe‐N‐C catalysts based on polyaniline with high oxygen reduction reaction catalytic activities in direct methanol fuel cells

Xuelin Zhang, Chenjun Hou, Weijian Yuan, Chengwei Deng, more

Fuel Cells > 23 > 1 > 42 - 50

Fe‐N‐C catalysts show great potential to replace Pt/C in oxygen reduction reaction (ORR). Polyaniline (PANI) is an ideal precursor with an abundant and homogeneous distribution of nitrogen sources. However, Fe‐N‐C based on PANI suffers from an unsatisfied performance in acidic media. Herein, a facile zinc‐assisted synthesis of Fe‐N‐C based on PANI was reported in this paper. ZnCl₂ templates can be...

article

Strategic Synthesis of 2D and 3D Conducting Polymers and Derived Nanocomposites

Munziya Abutalip, Guldana Zhigerbayeva, Dana Kanzhigitova, Perizat Askar, more

Advanced Materials > 35 > 5 > n/a - n/a

In recent decades, there has been a great deal of interest in conducting polymers due to their broad applications. At the same time, various synthetic techniques have been developed to produce various nanostructures of the conducting polymers with their fascinating properties. However, the techniques for the manufacture of 2D nanosheets are either complex or expensive. No comprehensive approach for...

article

Heterogeneous Overhauser‐DNP on ¹H dominated by scalar coupling in aqueous solution

Jonas Milani, Felipe Saenz, Christophe Roussel, Jean‐Philippe Ansermet

Magnetic Resonance in Chemistry > 61 > 3 > 180 - 183

The Overhauser Dynamic Nuclear Polarization (O‐DNP) of ¹H nuclei usually involves a dipolar coupling with the polarizing agent, whereas scalar coupling via hyperfine interactions are more common with ¹³C nuclei. Here, we show a scalar‐coupling dominated ¹H O‐DNP, using polyaniline as a heterogeneous polarizing agent in an aqueous solution.

article

Chiral recognition of tryptophan enantiomer based on the electrode modified by polyaniline adsorption bovine serum albumin complex

Wenyan Yao, Sha Li, Licheng Xie, Yan Jiang

Chirality > 35 > 2 > 129 - 144

A chiral sensing platform was constructed via adsorptive functionalization of ammonium persulfate doped polyaniline (APS‐DPANI) with bovine serum albumin (BSA). The novelty of this work is the construction of such chiral interface with adsorption principle. The material has been characterized by scanning electron microscope, Fourier transform infrared and X‐ray photoelectron spectroscopy, and thermogravimetric...

article

Evolution of electrical conductivity in semi‐interpenetrating polymer network of shape memory polyvinyl chloride and polyaniline

Xuelian Wu, Jiaxing Zou, Jian Yang, Jiang Jiang, more

Journal of Applied Polymer Science > 140 > 6 > n/a - n/a

Electrically conductive semi‐interpenetrating polymer network (IPN) from shape memory polyvinyl chloride (PVC) and polyaniline (PANI) is realized. The mechanical properties and shape memory performance of semi‐IPN are slightly different from the original PVC. The distribution of PANI within PVC is found to be non‐uniform in the thickness direction. The electrical conductivity of the as‐fabricated...

article

Improvement of cycling stability of Li_1.₂Mn₀_.₅₄Co₀_.₁₃Ni₀_.₁₃O₂ microrods cathode material modified with in situ polymerization of aniline in HTFSI solution

Wen Chen, Jialiang Chen, Junyi Deng, Xiaolong Mo, more

International Journal of Energy Research > 46 > 15 > 22960 - 22970

A thin polyaniline layer that was covered on the surface of the microrod‐like lithium‐rich Mn‐based oxide (LMO, Li_1.2Mn_0.54Co_0.13Ni_0.13O₂) was formed by in‐situ polymerization of the aniline monomer in HCl or (CF₃SO₂)₂NH (HTFSI) aqueous solution. The results of morphology analysis and structural characterization show that the uniform polyaniline coating layer has a thickness of 6 to 8 nm and the polymerization...

article

Indium Oxide Doped Polyaniline for Detection of Formaldehyde

Bhoomi Het Mavani, Alexander Penlidis

Macromolecular Reaction Engineering > 16 > 6 > n/a - n/a

Polyaniline (PANI) and a polyaniline derivative (poly (2,5‐dimethyl aniline)) are evaluated for their sensitivity towards formaldehyde. Among the two polymer backbones evaluated, polyaniline seems more sensitive towards formaldehyde. Therefore, to further enhance sensitivity towards formaldehyde, polyaniline is doped with different weight percentages of indium oxide and further evaluated for its sensing...

article

3D Porous Structure in MXene/PANI Foam for a High‐Performance Flexible Pressure Sensor

Tingting Yin, Yongfa Cheng, Yixin Hou, Li Sun, more

Small > 18 > 48 > n/a - n/a

The fields of electronic skin, man–machine interaction, and health monitoring require flexible pressure sensors with great sensitivity. However, most microstructure designs utilized to fabricate high‐performance pressure sensors require complex preparation processes. Here, MXene/polyaniline (PANI) foam with 3D porous structure is achieved by using a steam‐induced foaming method. Based on the structure,...

article

Electrode Material of PVA/PANI/GO‐PANI Hybrid Hydrogels through Secondary Induced Assembly In Situ Polymerization Method for Flexible Supercapacitors

Hailan Zhao, Weiying Zhang, Pengju Sun, Xiaoguang Ying, more

Macromolecular Materials and Engineering > 307 > 11 > n/a - n/a

As the core component of wearable electronic devices, flexible energy storage materials play an irreplaceable role. At present, it is still a challenge to prepare flexible electrode materials with high energy density. In this paper, a polyaniline‐based composite flexible conductive hydrogel (PPG‐P) with a two‐level conductive network is successfully prepared by a secondary induced assembly in situ...

article

Optimization of the ratio of aniline, ammonium persulfate, para‐toluenesulfonic acid for the synthesis of conducting polyaniline and its use in energy storage devices

Tapas Das, Vikas Kumar Pandey, Sanjeev Verma, Saurabh Kumar Pandey, more

International Journal of Energy Research > 46 > 14 > 19914 - 19928

We have successfully synthesized para‐toluenesulfonic acid (PTSA)‐based conducting polyaniline (PA) by using ammonium persulfate (APS) as oxidant for supercapacitor electrode applications. The primary aim is to find out the optimized ratio of APS:aniline and aniline:PTSA based on the electrochemical performances of the fabricated electrodes. PA having APS:aniline ratio of 1.25:1 and aniline:PTSA ratio...

article

Study on properties of hydrogenated nitrile butadiene rubber filled with polyaniline compound silica

Fanghui Wang, Huan Wang, Zhongying Wang, Dexin Liu, more

Polymer Composites > 43 > 10 > 7248 - 7257

Polyaniline was synthesized by chemical oxidation polymerization, and polyaniline‐silica (PANI‐SiO₂) nanocomposites were prepared by precipitation method. A reinforced PANI‐SiO₂/HNBR was obtained by filling the PANI‐SiO₂ composites into hydrogenated nitrile rubber (HNBR). The amino cations contained in acid‐doped PANI can electrostatically attract SiO₃²⁻, so that SiO₂ can grow directly on the surface...

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Search results

Evaluation of pH and thermal stability of sorbent based on silica modified with polyaniline using high-resolution continuum source graphite furnace atomic absorption spectrometry and Raman spectroscopy

A Facile One-Pot Preparation of Dialdehyde Starch Reduced Graphene Oxide/Polyaniline Composite for Supercapacitors

Biocatalyzed synthesis of conducting polyaniline in reverse microemulsions

Physicochemical properties of silica gel coated with a thin layer of polyaniline (PANI) and its application in non-suppressed ion chromatography

Stretchable Polyaniline@Epoxidized Natural Rubber Composites with Strong 3D Conductive Networks for High Performance Strain Sensors

Production of biologically active non‐woven textiles from recycled polyethylene terephthalate

Influence of copolymer composition on the properties of soluble poly(aniline‐co‐2‐[2‐chloro‐1‐methylbut‐2‐en‐1‐yl]aniline)s

Antibacterial and biocompatible polyaniline‐doped titanium oxide layers

Aqueous Ammonium‐Ion Supercapacitors with Unprecedented Energy Density and Stability Enabled by Oxygen Vacancy‐Enriched MoO₃@C

Zinc‐assisted synthesis of Fe‐N‐C catalysts based on polyaniline with high oxygen reduction reaction catalytic activities in direct methanol fuel cells

Strategic Synthesis of 2D and 3D Conducting Polymers and Derived Nanocomposites

Heterogeneous Overhauser‐DNP on ¹H dominated by scalar coupling in aqueous solution

Chiral recognition of tryptophan enantiomer based on the electrode modified by polyaniline adsorption bovine serum albumin complex

Evolution of electrical conductivity in semi‐interpenetrating polymer network of shape memory polyvinyl chloride and polyaniline

Improvement of cycling stability of Li_1.₂Mn₀_.₅₄Co₀_.₁₃Ni₀_.₁₃O₂ microrods cathode material modified with in situ polymerization of aniline in HTFSI solution

Indium Oxide Doped Polyaniline for Detection of Formaldehyde

3D Porous Structure in MXene/PANI Foam for a High‐Performance Flexible Pressure Sensor

Electrode Material of PVA/PANI/GO‐PANI Hybrid Hydrogels through Secondary Induced Assembly In Situ Polymerization Method for Flexible Supercapacitors

Optimization of the ratio of aniline, ammonium persulfate, para‐toluenesulfonic acid for the synthesis of conducting polyaniline and its use in energy storage devices

Study on properties of hydrogenated nitrile butadiene rubber filled with polyaniline compound silica

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