Article
Chemistry, Physical
Chao Feng, Jiaxing Huang, Peihui Yan, Fei Wan, Yunfei Zhu, Hao Cheng
Summary: The research on the application of polypyrrole materials in cement composites shows that adding waterborne polypyrrole can improve conductivity and compactness, optimize microstructure, and inhibit the formation of Ca(OH)2.
Article
Materials Science, Ceramics
Huihui Xie, Dayan Ma, Lan Zhang
Summary: A polypyrrole (PPy) layer is fabricated on micro-arc oxidized Al2O3-mullite coating to endow 2A12-T4 Al alloys with corrosion resistance and anti-static electricity. The resulting PPy layer provides a dense and uniform coating with decreased resistivity and sheet resistance. However, excessive treatment time leads to rapid growth of PPy particles and large gaps in the PPy layer, decreasing the conductivity of the coating.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Ashish A. Nimbekar, Rajendra R. Deshmukh
Summary: In this study, Polyaniline (PANI) was grafted onto polyester fabric through chemical oxidative polymerization, with O-2 plasma treatment enhancing grafting uniformity and conductivity. The strong interfacial bonding achieved on the surface of polyester fabric showed promising results for detection of ammonia gas.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Textiles
Xintong Xiao, Wei Ma, Xuehong Ren, Tung-Shi Huang
Summary: In this study, silane-modified polypyrrole was coated onto cotton fabrics through in situ polymerization method and chlorinated with NaClO solution to obtain antimicrobial conductive cotton fabrics. The coated fabrics were characterized and tested for their electrical conductivity, antibacterial properties, and ultraviolet light stability. The results showed that the PPy/Si-Cl-cotton fabrics exhibited excellent antibacterial properties and electrical conductivity, and the conductivity can be used for monitoring the antimicrobial activity.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Engineering, Environmental
Hao Yu, Peng Zhang, Hao Chen, Yiming Yao, Leicheng Zhao, Maoshen Zhao, Lingyan Zhu, Hongwen Sun
Summary: In this study, a vesicle-like and porous polypyrrole material (pPPy) was fabricated using in suit self-template method. The researchers explored the important role of porosity and morphology in efficiently capturing per- and polyfluoroalkyl substances (PFASs). It was found that the pPPy material with its large specific surface area, suitable pore sizes, and high hydrophilicity exhibited excellent sorption performance for PFASs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Polymer Science
Patrycja Bober, Islam M. Minisy, Zuzana Moravkova, Helena Hlidkova, Jiri Hodan, Jirina Hromadkova, Udit Acharya
Summary: Three-dimensional and porous polypyrrole (PPy) aerogels were synthesized via a simple two-step procedure involving cryopolymerization and freeze-drying. The choice of supporting polymers influenced the morphology, porosity, electrical conductivity, and mechanical properties of the PPy aerogels. These PPy aerogels exhibited effective adsorption of toxic Cr(VI) ions from aqueous solutions.
Article
Polymer Science
M. Almasoudi, M. Sh. Zoromba, M. H. Abdel-Aziz, M. Bassyouni, Ahmed Alshahrie, Abdullah M. Abusorrah, Numan Salah
Summary: Conducting polymers with 1D morphology have advantages for thermoelectric applications by improving electrical conductivity. Using an appropriate organic compound to create a self-degraded template is key for producing enhanced TE properties in 1D conducting polymers. In this study, PPy nanotubes synthesized with varying MO concentrations showed improved TE performance and a maximum power factor of 1 mu W/m k².
Article
Polymer Science
Oladipo Folorunso, Yskandar Hamam, Rotimi Sadiku, Suprakas Sinha Ray, Neeraj Kumar
Summary: A hybrid of graphene nanoplatelets with polypyrrole was fabricated, with electrical conductivity measurements showing a percolation threshold. The Taherian and Clingerman models were found to closely describe the experimental data for the hybrids. The study demonstrates the significant influence of graphene nanoplatelets on modifying polypyrrole for energy storage applications.
Article
Materials Science, Multidisciplinary
Oladipo Folorunso, Yskandar Hamam, Rotimi Sadiku, Suprakas Sinha Ray, Gbolahan Joseph Adekoya
Summary: This study conducted preliminary research on the morphology, thermal stability, and diffraction properties of PPy and Gr using SEM, TGA, and XRD. A model based on the Gompertz equation was proposed and modified to control the resistivity of the polymer, considering various input variables and identifying the percolation threshold. The modified Gompertz model showed higher efficiency and reliability compared to experimental measurements, and it was recommended for predicting the electrical conductivity of composites due to its accuracy, efficiency, and versatility in data parameterization.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Pantharee Kongsat, Edgar A. O'Rear, Thirawudh Pongprayoon
Summary: In this study, a coating was obtained on magnetite and hematite iron oxide nanoparticles using polypyrrole (PPy) to enhance electrical conductivity. The modified nanoparticles showed aggregation in water and exclusion of water molecules. The coated nanoparticles were characterized using FT-IR and SEM, and their thermal stability was investigated using TGA. Magneticity and electrical conductivity of the modified nanoparticles were analyzed using VSM and multimeter measurements. The results showed that the electrical conductivity was significantly enhanced, but there was no significant difference in the magnetic properties compared to the bare nanoparticles.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Liqun Liu, Chang Cai, Zejian Zhang, Shitong Zhang, Jian Deng, Bing Yang, Cheng Gu, Yuguang Ma
Summary: The organic lamellar single crystal reported serves as a versatile optoelectronic material with low threshold energy and high quantum efficiency, showing extraordinary device performance in optical pumping and light-emitting transistors.
ACS MATERIALS LETTERS
(2021)
Article
Chemistry, Physical
Sebastian Barwich, Joao Medeiros de Araujo, Aran Rafferty, Claudia Gomes da Rocha, Mauro S. Ferreira, Jonathan N. Coleman
Summary: This study explores the relationship between network morphology and conductivity in 2D nanosheets networks by controllably altering the morphology through a combination of heat and pressure. The increase in network conductivity is linked to an increase in network connectivity and a reduction in junction resistance as the porosity is decreased, leading to significant improvements in conductivity. Conductivity anisotropy changes with porosity, with a potential decrease from 3000 at low porosity to 1 at high porosity.
Article
Materials Science, Multidisciplinary
Sonal Gupta, Udit Acharya, Hana Pistekova, Oumayma Taboubi, Zuzana Moravkova, Martina Kasparova, Petr Humpolicek, Patrycja Bober
Summary: The study investigated a one-step preparation of polypyrrole (PPy) assisted by an organic dye, acriflavine hydrochloride (AF), resulting in the development of PPy nanofibers with enhanced conductivity and capacitance, as well as improved antibacterial properties. The interaction between AF and PPy was confirmed by structural analysis, making the PPy tuned by an organic dye suitable for applications requiring both electroconductivity and antibacterial activity, such as wound healing, electrochemical sensors, and regenerative medicine.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kailian Dong, Hai Zhou, Wenlong Shao, Zheng Gao, Fang Yao, Meng Xiao, Jiashuai Li, Yongjie Liu, Shuxin Wang, Shun Zhou, Hongsen Cui, Minchao Qin, Xinhui Lu, Chen Tao, Weijun Ke, Guojia Fang
Summary: In this paper, a micronanometerscale X-ray detector based on all-inorganic lead-free CsAg2I3 single crystal microbelts is designed to address the issues of toxicity and high thickness in lead halide perovskite single crystals. The optimized CAI photodetectors exhibit good ultraviolet photoresponse characteristics, excellent X-ray detection performance, and fast response speed. Furthermore, they also demonstrate excellent applicability for X-ray imaging. Flexible X-ray detectors fabricated using thin CAI single-crystal microbelts demonstrate good flexibility under different bending radii and bending cycles.
Article
Electrochemistry
Guang Yang, Peng-Fei Cao, Ethan C. Self, Michelle Lehmann, Xi Chelsea Chen, Sheng Zhao, Sirui Ge, Chenhui Zhu, Tomonori Saito, Frank M. Delnick, Jagjit Nanda
Summary: The tradeoff between ionic conductivity and mechanical robustness of a polymer electrolyte can be alleviated by selectively plasticizing the ion-conductive block. By introducing TEGDME plasticizer into a PS-PEO-PS block copolymer electrolyte, the ionic conductivity is increased while maintaining a relatively high storage modulus.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
