Article
Energy & Fuels
Yanrong Zhu, Jude O. Iroh, Ramakrishnan Rajagopolan, Aydin Aykanat, Richard Vaia
Summary: This study systematically varied the feed composition to synthesize polyaniline (PANi) and polyaniline-clay nanocomposites (PACN), and analyzed their thermal properties. The results showed that increasing the oxidant concentration decreased the thermal stability and melting point of PANi, while the reinforcement of PANi with clay increased its thermal stability and melting point. The optimal thermal stability and melting point of PANi were achieved by adding about 0.1 wt% of the oxidant.
Article
Energy & Fuels
Yanrong Zhu, Sandeep Kottarath, Jude O. Iroh, Richard A. Vaia
Summary: This study demonstrates the control of the structure of polyaniline-montmorillonite clay nanocomposites by varying the concentration of the oxidant. Various characterization techniques were used to investigate the structure of the nanocomposites, and electrochemical impedance spectroscopy analysis showed that the nanocomposite coating with highly intercalated clay exhibited enhanced durability.
Article
Chemistry, Physical
Islam M. Minisy, Nehal A. Salahuddin, Mohamad M. Ayad
Summary: In this study, an eco-friendly adsorbent of chitosan-montmorillonite/polyaniline nanocomposite was synthesized and used for methylene blue removal from aqueous solutions. The polyaniline base composite proved to be a better dye adsorbent and exhibited a maximum adsorption capacity of 111 mg g-1.
APPLIED CLAY SCIENCE
(2021)
Article
Multidisciplinary Sciences
Naeemeh Peidavosi, Mahmoud Azami, Nima Beheshtizadeh, Ahmad Ramazani Saadatabadi
Summary: Recent trends in tissue engineering technology have focused on utilizing bioactive scaffolds to generate electrical potentials that have appropriate effects on cell behaviors. This study aimed to develop a piezo-electrical stimuli scaffold with high electrical conductivity for bone and cartilage tissue regeneration. The scaffolds were prepared using Barium Titanate nanoparticles as a piezoelectric material and highly conductive Polyaniline nanoparticles as a dopant. The conductivity and piezoelectric properties of the scaffolds were evaluated, and it was found that the PCL/PANI5/BT40 composite exhibited unprecedented voltage and desirable properties for tissue engineering applications.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Naima Mennas, Saadia Lahreche, Faiza Chouli, Lilia Sabantina, Abdelghani Benyoucef
Summary: In this study, new adsorbents were prepared by modifying a montmorillonite clay (Mt) with cethyltrimethyl ammonium bromide (CTAB) and polyaniline (PAni). These adsorbents showed enhanced adsorption capabilities for methylene blue (MB) removal. Factors such as initial pH, contact time, and temperature were found to influence the adsorption process. The adsorption data fit better with the Freundlich isotherm, and the adsorption process followed pseudo-second-order kinetics.
Article
Polymer Science
Lyubov S. Kuznetsova, Vyacheslav A. Arlyapov, Olga A. Kamanina, Elizaveta A. Lantsova, Sergey E. Tarasov, Anatoly N. Reshetilov
Summary: This study explores the use of electropolymerized nanocomposite conductive polymers as a reagent-less biosensor for glucose determination. The obtained polymers were characterized using infrared spectroscopy and scanning electron microscopy, while the electrochemical characteristics were studied using cyclic voltammetry and impedance spectroscopy. The most promising nanocomposite material was found to be poly(neutral red) and thermally expanded graphite, showing high sensitivity and accuracy in glucose determination.
Article
Chemistry, Analytical
Marzieh Aliya, Ehsan Nazarzadeh Zare, Hassan Faridnouri, Matineh Ghomi, Pooyan Makvandi
Summary: The interaction between tyrosinase and sulfonated starch-graft-polyaniline@graphene nanocomposite was investigated using electrochemical methods. The immobilized tyrosinase showed activity in the electrochemical detection of three substrates. The nanocomposite was characterized and the enzyme immobilization was successfully achieved through a drop-casting technique. The modified electrode exhibited enhanced catalytic effects on the redox agent compared to the bare electrode.
Article
Chemistry, Physical
Jinghui Zhan, Huayao Chen, Hongjun Zhou, Li Hao, Hua Xu, Xinhua Zhou
Summary: The nano-scale antibacterial agents show great potential in plant protection and nutrition due to their size-dependent qualities, effective antibacterial activity, and unique physiochemical properties. The Mt-supported ZnO/TiO2 nanocomposite exhibited increased antibacterial activity and wetting properties compared to pure ZnO and Mt-supported ZnO composite, offering new opportunities for agricultural and crop protection with its relatively low cost, green and environment friendly, high antibacterial activity, and enhanced wettability.
APPLIED CLAY SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Mohammad Hadi Salehi, Hooman Golbaten-Mofrad, Seyed Hassan Jafari, Vahabodin Goodarzi, Maliheh Entezari, Mehrdad Hashemi, Soheila Zamanlui
Summary: Bacterial cellulose aerogel was successfully used as a matrix for embedding nanomaterials and polymers to form conductive composite materials. The inclusion of nano-clay and polyaniline in the aerogel led to a significant improvement in electrical conductivity and thermal stability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Yao Lu, Shiu Hei Lam, Wenzheng Lu, Lei Shao, Tsz Him Chow, Jianfang Wang
Summary: In this study, all-state switching of differently sized PANI nanospheres (NSs) and active plasmon switching on PANI-coated Au nanodisks (NDs) were achieved by proton doping/dedoping and electrochemical methods. The study provides a fundamental understanding of the optical properties of PANI and opens up possibilities for developing high-performance dynamic media for active plasmonics.
Article
Multidisciplinary Sciences
C. Muhammed Ajmal, Seokjae Cha, Wonjoon Kim, K. P. Faseela, Heejun Yang, Seunghyun Baik
Summary: This study reports the constant resistance performance of a conductive nanocomposite under 30% strain. The researchers achieved this by generating hierarchically structured silver nanosatellite particles in a stretchable silicone rubber matrix, while tuning the barrier height. The results provide insights into designing stretchable conductors.
Article
Polymer Science
Haihua Wang, Xiaojing Wu, Xuan Qin, Guiqiang Fei, Liyu Sun, Yanyu Li, Mengxi Wang
Summary: The reverse approach of in situ polymerization was used to prepare a conductive polyaniline/polyacrylate interpenetrating polymer nanocomposite, which showed high conductivity, tensile strength, and flexibility. The water absorption was significantly reduced, and the conductivity remained stable even after folding 200 times.
Article
Chemistry, Analytical
Maria Laura Para, Daniele Versaci, Julia Amici, Maria Florencia Caballero, Melina Vanessa Cozzarin, Carlotta Francia, Silvia Bodoardo, Martina Gamba
Summary: Composites of montmorillonite and polyaniline were synthesized and used to modify commercial lithium-ion battery separators for enhanced performance. The different structures and properties obtained from composites with varying ratios indicate a promising potential for coated separators in LIBs.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Review
Engineering, Biomedical
Sania Ghobadi Alamdari, Abbas Alibakhshi, Miguel de la Guardia, Behzad Baradaran, Reza Mohammadzadeh, Mohammad Amini, Prashant Kesharwani, Ahad Mokhtarzadeh, Fatemeh Oroojalian, Amirhossein Sahebkar
Summary: This article introduces the use of synthetic and natural polymer hydrogels, nanocarbon-based hydrogels, and other nanoparticle-based materials in cardiac tissue engineering, with a focus on conductive nanostructured hydrogels.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Polymer Science
Nouha Haddar, Ali Kallel, Jean-Francois Pilard, Philippe Daniel
Summary: The present work focuses on the preparation of flexible conductive nanocomposites based on PU/PANI with different mass percentages using a solution process. Doping the films with NiCl2 significantly increases the conductivity, with better results obtained using the second method of synthesis.
Article
Chemistry, Applied
A. F. Baldissera, M. R. Silveira, A. C. Dornelles, C. A. Ferreira
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2020)
Article
Chemistry, Analytical
El Hadji Dieye, Alioune Fall, Modou Fall, Carlos Arthur Ferreira, Mauro R. S. Silveira, Alessandra F. Baldissera
Summary: Electropolymerisation of pyrrole was conducted in the presence of two ionic liquids, and the resulting PPy films were characterized using various electrochemical techniques. The PPy electrosynthesized with the presence of 1,2-dimethylimidazolium methylsulfate showed promising results for the detection of Cu(2+) using Differential Pulse Anodic Stripping Voltammetry.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Andreza P. Cardoso, Stephanie C. de Sa, Carlos H. M. Beraldo, Gelsa E. N. Hidalgo, Carlos A. Ferreira
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2020)
Article
Chemistry, Applied
Carlos H. M. Beraldo, Mauro R. da S. Silveira, Alessandra F. Baldissera, Carlos A. Ferreira
PROGRESS IN ORGANIC COATINGS
(2020)
Article
Chemistry, Applied
Ariane V. Zmozinski, Rafael S. Peres, Flavia Roberta Brust, Alexandre Jose Macedo, Emilene Mendes Becker, Amanda Pasinato Napp, Henrique Alves de Brito, Marilene H. Vainstein, Augusto Schrank, Carlos Arthur Ferreira
Summary: The study confirmed the effectiveness of rue extract and ginger oleoresin as natural antifouling agents in a silicone matrix, improving thermal stability and water diffusion in the film. Rue extract reduced adhesion of gram-negative bacteria, while ginger oleoresin altered the film's morphology.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2021)
Article
Chemistry, Applied
J. F. Marques, A. F. Baldissera, M. R. Silveira, A. C. Dornelles, C. A. Ferreira
Summary: The aim of this study was to evaluate the performance of intumescent coatings based on chemically modified tannin in passive fire protection. The chemical modification of tannins was carried out with phosphorus pentoxide or phytic acid. It was found that all coatings provided good fire protection, and the temperature of the steel substrate after 30 min of the experiment did not exceed 130 degrees C in the formulations where only the chemically modified tannin with the expandable graphite was used.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2021)
Article
Polymer Science
Gilberto Joao Pavani, Sergio Adalberto Pavani, Carlos Arthur Ferreira
Summary: This study described a medium pressure gas permeameter developed by the authors in polymer nanocomposite plates, which was experimentally validated for analyzing the gas permeability of different polymeric materials. The results obtained suggest the validity of the equipment for such analysis.
IRANIAN POLYMER JOURNAL
(2021)
Article
Chemistry, Applied
Raiane Valenti Goncalves, Isadora Quinhones Liposki, Lucas Weber Dias, Alessandra Fiorini Baldissera, Mauro Ricardo da Silva Silveira, Carlos Arthur Ferreira, Leila Bonnaud, Nara Regina de Souza Basso
Summary: A corrosion protection material using commercial benzoxazine and polyaniline (PAni) was developed, where PAni doped with cardanol showed better anticorrosion performance and adhesion strength in coatings applications. The incorporation of cardanol-doped PAni in benzoxazine also reduced the cure temperature of the material.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
El Hadji Dieye, Alioune Fall, Modou Fall, Carlos Arthur Ferreira, Mauro R. S. Silveira, Alessandra F. Baldissera
Summary: Polyaniline was synthesized in the presence of two ionic liquids and used to prepare cation-exchange membranes for the removal of heavy metals. The membranes showed extraction percentages ranging from 80.63% to 96.04% for Cu2+, 87.89% to 99.55% for Pb2+, and 68.53% to 88.03% for Cd2+.
EMERGENT MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Luis Felipe de Paula Santos, Carlos Eduardo Moraes, Tamires Repullio do Amaral, Mauro Ricardo da Silva Silveira, Carlos Arthur Ferreira, Bruno Ribeiro, Michelle Leali Costa, Edson Cocchieri Botelho
Summary: Carbon nanotubes play an important role in the research of nanostructured thermoplastic composites, as they can enhance the thermal stability and reduce the heat release of the composites. Furthermore, the addition of carbon nanotubes also improves the viscoelastic properties and long-term stability of the materials.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Applied
D. Strassburger, M. R. Silveira, A. F. Baldissera, C. A. Ferreira
Summary: Intumescent coatings are widely used in civil construction for their ability to provide structural safety and human safety in the event of a fire. The development of water-based intumescent paints has become essential due to restrictions on volatile organic compound emissions. This study developed water-based intumescent coatings and tested their fire resistance, as well as characterized the carbonaceous layers formed during the fire.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2023)
Article
Polymer Science
Otavio Bianchi, Patricia Bereta Pereira, Carlos Arthur Ferreira
Summary: This study explores the use of a high-speed thermokinetic mixer for recycling ground tire rubber (GTR) through mechanochemical treatment. Different processing conditions are found to reduce the gel fraction and result in various degradation effects and physicochemical changes. An artificial neural network is utilized to describe and correlate the thermal degradation profile with the processing conditions and characteristics of the GTR.
Article
Multidisciplinary Sciences
Gilberto Joao Pavani, Sergio Adalberto Pavani, Carlos Arthur Ferreira
Summary: This paper introduces a novel medium pressure and temperature gas permeameter that can accurately and conveniently analyze the permeability of gases in polymeric and nanocomposite materials. By testing samples of high density polyethylene and HDPE with added nanoclay, the feasibility of the permeameter is verified, and the effectiveness of the implemented improvements and advances is demonstrated.
SN APPLIED SCIENCES
(2022)
Article
Engineering, Biomedical
Juliana Giron Bastidas, Natasha Maurmann, Mauro Ricardo da Silveira, Carlos Arthur Ferreira, Patricia Pranke
BIOMEDICAL MATERIALS
(2020)
Article
Chemistry, Physical
David Zanuy, Georgina Fabregat, Carlos A. Ferreira, Carlos Aleman
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
