Article
Polymer Science
Cheng-Ho Chen, Ying-Chen Lin, Fu-Su Yen
Summary: In this study, conducting core-shell nanocomposites PANDB/chi-Al2O3 were successfully synthesized via an in situ polymerization method, showing excellent electrical conductivity and core-shell structure. Through TEM and FE-SEM observation as well as material weight ratio experiments, the optimum weight ratio of AN/chi-Al2O3 was identified as 1.5. The resulting blend film of conducting PANDB/chi-Al2O3 core-shell nanocomposite with water-based polyurethane exhibited promising antistatic and electrostatic discharge properties.
Article
Chemistry, Physical
Sehrish Rehman, Abbas Khan, Rizwan Ullah, Natasha Anwar, Luqman Ali Shah, Nasrullah Shah, Mohsin Siddique, Hazrat Ali
Summary: The work focuses on synthesizing conductive polyaniline and doping it with dodecylebenzenesulfonic acid in the presence of oxalic acid. Various characterization techniques were used to analyze the material properties, including Fourier-transform infrared spectroscopy, UV-Vis spectroscopy, X-ray diffraction, scanning electron microscopy, and thermo gravimetric analysis. The results confirmed the formation of the polymer and its successful doping, as well as provided insights into its structure, morphology, thermal stability, and electrical conductivity.
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Chemistry, Inorganic & Nuclear
Ramanath Prabhu, Karthika Shetty, T. Jeevananda, H. C. Ananda Murthy, Mika Sillanpaa, Tan Nhat
Summary: Polyaniline-halloysite nanoclay composites (PHC) were successfully prepared through inverted emulsion polymerization technique using benzoyl peroxide (BP) as the oxidizing agent. The FTIR spectra showed vibration bands associated with the stretching of NH, benzenoid, and quinoid rings. The specific conductance of the composites decreased with increasing halloysite nanoclay concentration, while the XRD pattern exhibited peaks at 20.08(0) and 25.34(0). Thermogravimetric analysis indicated improved thermal resistance compared to pure polyaniline. Field emission scanning electron microscopy revealed agglomeration of polyaniline particles and coating on halloysite nanoclay. The AC specific conductance increased due to the formation of bipolar and polarons, while the dielectric constant decreased with increasing frequency. The highest dielectric constant was observed for PHC (70/30) at 10(2) Hz, with a value of 14.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Polymer Science
Tar-Hwa Hsieh, Lin-Chia Ho, Yen-Zen Wang, Ko-Shan Ho, Cheng-Hsien Tsai, Li-Fan Hung
Summary: The hydrophilic initiator potassium persulfate was transformed into a hydrophobic molecule by forming a complex with cetyltrimethylammonium bromide, allowing for inverse emulsion polymerization to take place inside micelles. The resulting iron compound, after calcination, exhibited superparamagnetic properties with a high saturation magnetization, which decreased over time when exposed to the atmosphere.
Article
Chemistry, Physical
Wei Liu, Hongrui Fu, Mutai Bao, Xiaojun Sun, Xiao Ha, Yiming Li, Jinren Lu
Summary: This study investigates the use of aqueous solutions of dodecylbenzene sulfonic acid (DBSA) and hydrolyzed polyacrylamide (HPAM) to enhance oilfield recovery. The three ingredients, including DBSA, HPAM, and asphaltenes (ASP), play a synergistic role in stabilizing emulsions during oil recovery. The results show that when the three ingredients co-exist, they form a complex adsorption unit with DBSA dominating the system.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Yihua Cui, Jinhua Gao, Shiping Lin, Weitian Chen, Jianwei Guo
Summary: Emulsion polymerization was used to create composites of polyaniline-amino-carbon nanotubes (PANI-A-CNT). Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM) were used to examine the chemical bonding properties and nanoscale structure of PANI-A-CNT materials. The study found that PANI-A-CNT/ABS composites exhibit improved electrostatic and mechanical properties compared to p-CNT/ABS composites, expanding the application range of ABS resin.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Hind Hajjaoui, Malika Khnifira, Amal Soufi, Mohamed Abdennouri, Savas Akkaya, Recep Akkaya, Noureddine Barka
Summary: In this study, polyaniline was synthesized using two different methods, and its performance in dye adsorption was evaluated. The relationship between the adsorption properties of polyaniline and its molecular structure was revealed through experimental and computational approaches.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Cheng-Ho Chen, Hong-Tu Wu, Ching-Feng Mao, Wei-Tung Liao
Summary: The Chi-g-PANI copolymer was successfully synthesized under optimized conditions, with a grafting % of 92% and electrical conductivity of 8 x 10(-3) S/cm. The FTIR and C-13 solid-state NMR results confirmed the successful grafting of PANI onto chitosan molecular chains. UV-Vis analysis showed similar electronic transition behavior of Chi-g-PANI copolymer to PANI, while XRD results indicated destruction of chitosan crystallinity by PANI during copolymerization. FE-SEM results also demonstrated distinct morphology of Chi-g-PANI copolymer compared to chitosan or PANI.
Article
Polymer Science
Amrish Kumar Padmakumar, Nikhil K. Singha, Muthupandian Ashokkumar, Frank A. Leibfarth, Greg G. Qiao
Summary: Advances in nanomolecular engineering have led to the development of technology using ultrasonic irradiation to initiate polymerization. In this study, ultrasound-assisted reversible addition chain-transfer (Sono-RAFT) polymerization was used to compare batch and continuous flow polymerization methods on monomer conversion, polymer molar mass, and dispersity using different monomer substrates. Results showed that continuous flow polymerization had higher monomer conversion compared to batch reactions under the same conditions. Continuous flow reactors with stainless-steel microreactors provided higher cavitation intensity and lower oxygen contamination, making Sono-RAFT possible at higher monomer concentrations. These findings have implications for mechanochemistry and the practical and sustainable implementation of sonochemically regulated polymerization.
Article
Polymer Science
Jose Costa de Macedo Neto, Bruno Mello de Freitas, Adalberto Gomes de Miranda, Reinaldo de Almeida Rodrigues, Gilberto Garcia Del Pino, Antonio Claudio Kieling, Marcos Dantas dos Santos, Sergio Duvoisin Junior, Antonio Estanislau Sanches, Israel Gondres Torne, Claudia Candida Silva, Joao Carlos Martins da Costa, Roger Hoel Bello
Summary: The aim of this study was to investigate the stability and morphology of polystyrene latex with kaolinite as a filler during the synthesis of nanocomposites through emulsion polymerization. Nanocomposites with different weight percentages of kaolinite (1%, 3%, and 5%) were prepared. Latexes with 1% to 3% kaolinite showed stability during the polymerization reaction, and the hydrodynamic diameters were measured to be 93.68 nm and 82.11 nm for the latexes with 1% and 3% kaolinite, respectively. XRD, SEM, and HRTEM analysis confirmed the presence of exfoliated and intercalated structures of kaolinite.
Article
Biochemistry & Molecular Biology
Soyoung Ahn, Sunyoung Bae
Summary: In this study, a new adsorbent was synthesized via electrochemical polymerization for solvent-free sample extraction. The proposed method using the newly synthesized adsorbent showed high extraction efficiency, precision, and accuracy. The wire coated with MWCNT-IL/PANI adsorbent could be repeatedly used up to 150 times without degrading its extraction performance in an aqueous solution, making it an eco-friendly and cost-effective extraction method.
Article
Polymer Science
Chengliang Wang, Xu Zhang, Wei Zhao, Xin Liu, Qingfu Wang, Jingjiang Sun
Summary: This study introduces a novel organo-catalyzed method for the synthesis of hyperbranched aliphatic polycarbonates (HBPCs). The method allows for precise control over the HBPC structure and the introduction of different functional groups. HBPCs have significant potential for biomedical applications.
Article
Materials Science, Multidisciplinary
Aline Fontana Batista, Aline Castilho Rodrigues-Siqueli, Ana Paula Silva de Oliveira, Gilberto Petraconi, Mauricio Ribeiro Baldan
Summary: Polyaniline (PAni) is a conductive polymer widely studied for its versatility, electrical properties, and low cost. In this research, a new synthesis method for PAni using carbon fiber (CF) as a catalyst was proposed. The method was found to be environmentally friendly, simple, and economically viable, producing a conductive form of PAni on the CF surface.
Article
Multidisciplinary Sciences
Jia-Wei Shiu, Chin-Wen Chen, Meng-An Liu, Syang-Peng Rwei
Summary: Polymer-encapsulated pigments with excellent properties were synthesized using a single monomer. These pigments can be used to dye textiles, and they have small particle sizes and receive high ratings for dry rubbing fastness, washing fastness, and handling.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Yichen Wang, Bingquan Hu, Jing Luo, Yao Gu, Xiaoya Liu
Summary: In this study, a facile method was developed to construct polyaniline@MnO2/graphene ternary hybrid hollow spheres via Pickering emulsion polymerization. The PANI@MnO2/GR HS exhibited significantly improved electrochemical performance with a maximum specific capacitance of 743.8 F g(-1) and good cycling stability, retaining 93% of the initial value after 2000 cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
