Article
Materials Science, Composites
Wonbo Shim, Seung-Yeol Jeon, Woong-Ryeol Yu
Summary: The resistance change of carbon nanotube (CNT)/polymer composites during stress relaxation is strongly influenced by CNT concentration and aspect ratio. At low concentrations, the resistance increases regardless of CNT aspect ratio as relaxation progresses. A new resistor model based on the number of contacts between CNTs within tunneling distance was developed to explain this phenomenon, showing that insufficient contacts lead to increased tunneling resistance and overall resistance in the composites. This model was then used to qualitatively explain the resistance change during tensile tests, demonstrating its validity.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Multidisciplinary
Tyler Albright, Jared Hobeck
Summary: This research explores a high-fidelity stochastic modeling framework to predict the electromechanical properties of conductive polymer composites (CPCs) at bulk scales. CPC dogbone specimens are manufactured and their properties are characterized through testing. The modeled predictions agree with experimental results and are compared to predictions from an analytical model.
Article
Materials Science, Composites
Weipeng Zheng, Zhangxin Guo, Zhihua Wang, Chai Gin Boay, Xiaojun Wang, Yongcun Li
Summary: This article describes the research on the elastic properties of carbon nanotube reinforced composite materials and graphene-carbon nanotube (G-C) reinforced composite materials in detail. The results show that as the volume fraction of graphene and carbon nanotubes increases, the Young's modulus and shear modulus of the reinforced composite material increase significantly. In addition, the tilt angle and quantity of graphene and carbon nanotubes will also affect the elastic properties of the composite material.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Xue Lei, Mei Liang, Huawei Zou, Shengtai Zhou
Summary: The objective of this study was to investigate the influence of shear rates on the properties of polyamide 6/multiwalled carbon nanotube composites. It was found that high shearing conditions in injection molding were unfavorable for the formation of intact filler network, resulting in lower electrical conductivity. A better filler distribution was observed under higher shearing conditions. Moreover, the tensile strength of the injection molded samples increased with higher filler concentrations, attributed to the preferential orientation and better distribution of carbon nanotubes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Composites
Shengfei Hu, Bingfeng Xu, Yang Zhao, Xudong Fu, Qingting Liu, Rong Zhang
Summary: Conductive and thermal conductive polymer composites with segregated network structures were prepared by the Pickering emulsion method. The inclusion of carbon nanotubes (CNTs) as bridges improved the conductivity and thermal conductivity of the composites. This study provides a convenient and time-saving approach for the study of segregated structural thermally conductive composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Yuan Fang, Long-Yuan Li, Sung-Hwan Jang
Summary: This paper presents an analytical model to describe how mechanical deformation affects the effective electrical conductivity of CNTs reinforced composites. The model identifies two mechanisms through which mechanical strain influences the conductivity, and provides analytical formulations for calculating this relationship. Validation of the model is performed using experimental data from literature on CNTs reinforced polymer composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Luca Lavagna, Mattia Bartoli, Daniel Suarez-Riera, Davide Cagliero, Simone Musso, Matteo Pavese
Summary: Carbon nanotubes can be effectively dispersed in cement by treating them with sulfonitric acid, resulting in significant improvement in the mechanical properties and electrical conductivity of cement-based composites.
ACS APPLIED NANO MATERIALS
(2022)
Review
Materials Science, Composites
Uwa O. Uyor, Patricia A. Popoola, Olawale M. Popoola, Victor S. Aigbodion
Summary: Polypropylene (PP) is widely used in engineering applications, but lacks desired thermal properties and mechanical strength. The incorporation of carbon nanotubes (CNTs) in the PP matrix has improved its engineering properties while retaining its lightweight and flexibility. Despite challenges, the development of PP-CNTs composites shows promising advancements and has important industrial applications.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Composites
Zaiwei Li, Long-yuan Li
Summary: This paper presents a simple approach for calculating the effective electrical conductivity of carbon nanotubes-reinforced two-phase composite materials. The approach takes into account the effect of percolation threshold by modifying the traditional effective medium approximation. The predicted electrical conductivity is validated using published experimental results.
COMPOSITES COMMUNICATIONS
(2022)
Article
Biophysics
Yiqian Huang, Wei Jing, Yechen Li, Qing Cai, Xiaoping Yang
Summary: Bone is an electrically responsive tissue, and electroactive materials such as biodegradable polyorganophosphazenes (POPPs) combined with electrical stimulation (ES) can enhance osteogenesis. Conductive composite films made of PAGP/CNT were found to promote faster proliferation and stronger osteogenic differentiation of bone marrow mesenchymal stromal cells (BMSCs) compared to PLLA/CNT films, suggesting new strategies for bone repair material design.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Physical
Pawel Smolen, Tomasz Czujko, Zenon Komorek, Dominik Grochala, Anna Rutkowska, Malgorzata Osiewicz-Powezka
Summary: This study successfully obtained electrically conductive materials by adding functionalized multiwalled carbon nanotubes, and confirmed that carbon nanotubes as polymer reinforcements can increase tensile strength and strain percentage. However, increasing nanofiller percentages resulted in a drastic decrease in Young's modulus values.
Article
Construction & Building Technology
Peiqi Li, Junxing Liu, Sumin Im, Seongmin Cho, Sungchul Bae
Summary: This paper investigates the influence of graphene nanoribbons (GNRs) on the mechanical, hydration, and electrical properties of cement-based materials. The results show that the incorporation of GNRs improves the electrical resistivity and mechanical performance of the cementitious composites.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Yang Liu, Jingmei Tao, Yichun Liu, Yong Hu, Rui Bao, Fengxian Li, Dong Fang, Caiju Li, Jianhong Yi
Summary: The study improved the interface bonding issue in CNTs reinforced Cu matrix composites by forming TiC on the surface of CNTs, enhancing the mechanical properties of the composites and achieving significant strengthening efficiency.
Article
Materials Science, Multidisciplinary
Junqin Feng, Jingmei Tao, Xiaofeng Chen, Hui Zhang, Yichun Liu, Rui Bao, Xuhui Xu, Caiju Li, Jianhong Yi
Summary: To address the trade-off between mechanical and electrical properties in carbon nanotubes (CNTs)/Cu composites, a pre-decorated strategy involving the introduction of WC nanoparticles on CNTs (WC@CNTs) was proposed. The research found that WC was epitaxially grown on the CNTs with an epitaxial orientation relationship (OR) of WC(001) / /CNTs(0002), resulting in a robust WC-CNTs interface and enhanced bonding strength of CNTs-Cu interface. The designed CNTs-WC-Cu interface not only ensured accurate stress/strain transmission but also improved interfacial conductivity, leading to superior mechanical and electrical properties compared to CNTs/Cu composites.
Article
Materials Science, Multidisciplinary
Priyanka Rani, Rajender Singh Malik
Summary: In order to address electromagnetic pollution, researchers have developed an electromagnetic shielding material composed of polyetherimide and sulfonated poly(ether ether ketone). This material exhibits excellent electrical conductivity and shielding effectiveness.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Seyed Rasoul Mousavi, Sara Estaji, Elham Rostami, Hossein Ali Khonakdar, Mohammad Arjmand
Summary: A novel green surface modification using chitosan was successfully implemented on alumina nanoparticles to prevent aggregation. Various analyses were used to evaluate surface changes, showing that chitosan-functionalized alumina has a positive effect on epoxy curing kinetics. Additionally, surface modification of alumina significantly affected the electrical insulating behavior of epoxy.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Review
Chemistry, Multidisciplinary
Ahmadreza Ghaffarkhah, Ehsan Hosseini, Milad Kamkar, Ali Akbari Sehat, Sara Dordanihaghighi, Ahmad Allahbakhsh, Colin van der Kuur, Mohammad Arjmand
Summary: Graphene quantum dot (GQD) is a young superstar in the carbon family, with unique optoelectrical properties and numerous important characteristics, showing significant momentum in various fields. Future research should focus on improving purification and eco-friendly synthesis methods, as well as enhancing photoluminescence quantum yield and production yield.
Article
Thermodynamics
Sepehr Mosadegh, Ahmadreza Ghaffarkhah, Colin van der Kuur, Mohammad Arjmand, Sina Kheirkhah
Summary: The effects of graphene oxide nanomaterials addition and oxidation level on ignition delay and burning rate of ethanol droplets were investigated experimentally. The results showed that increasing the loading concentration generally increased the ignition delay, except for ethanol doped with highly oxidized graphene. It was also found that atomization may occur for the doped ethanol droplets.
COMBUSTION AND FLAME
(2022)
Review
Materials Science, Composites
Seyed Rasoul Mousavi, Sara Estaji, Azin Paydayesh, Mohammad Arjmand, Seyed Hassan Jafari, Sasan Nouranian, Hossein Ali Khonakdar
Summary: Through the utilization of nanotechnology, incorporating various modified and unmodified nanofillers into epoxy resins has gained momentum in enhancing their toughness. The chemical functionalization of nanofillers has been shown to significantly impact their dispersion in the EP matrix and subsequently influence the fracture properties of the composites. This review highlights the research progress in the toughening of EPs using carbon nanotubes, graphene, and their hybrids over the past six years.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Analytical
Mohammadreza Farrokhnia, Ghassem Amoabediny, Mohammad Ebrahimi, Mohammadreza Ganjali, Mohammad Arjmand
Summary: An ultrsensitive novel electrochemical nano-biosensor was developed for rapid detection of insulin antibodies against diabetes antigens. The nano-biosensor exhibited high sensitivity, good reproducibility, and the potential for early detection of type 1 diabetes.
Article
Chemistry, Physical
Seyyed Alireza Hashemi, Hamid Reza Naderi, Seyyed Mojtaba Mousavi, Sonia Bahrani, Mohammad Arjmand, Ayrat M. Dimiev, Seeram Ramakrishna
Summary: By enhancing polymeric configurations with silver nanowires, the specific capacitance of polypyrrole and polyindole was significantly increased, with the Ag-PIN configuration demonstrating superior performance when combined with LArGO in an asymmetric supercapacitor. The resulting electrodes showed excellent specific capacitance retention, high specific capacitance, and energy density even after 5000 cycles, highlighting the great potential of the hybrid package in bridging the gap between high-performance batteries and supercapacitors.
Article
Engineering, Environmental
Farhad Ahmadijokani, Hossein Molavi, Majed Amini, Addie Bahi, Stefan Wuttke, Tejraj M. Aminabhavi, Milad Kamkar, Orlando J. Rojas, Frank Ko, Mohammad Arjmand
Summary: The exceptional stability and functional groups of UiO-66 make it a versatile candidate for various applications, including wastewater treatment. Post-synthetic modification of UiO-66 allows for a broad range of potential uses. However, its commercial applications have been hindered by the polycrystalline nature of the powder. In this research, modification with UiO-66-NH2 and post-processing with nanofibers were employed to facilitate water decontamination.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Seyed Mohammad Amin Ojagh, Majed Amini, Sierra Cranmer-Smith, Farzaneh Vahabzadeh, Mohammad Arjmand, Kam C. Tam, Orlando J. Rojas, Milad Kamkar, Theo G. M. van de Ven
Summary: This study addresses two challenges in additive manufacturing of cellulosic hydrogels and cryogels: inadequate rheological properties of ENCC suspensions for 3D printing of hydrogels and poor mechanical properties of 3D printed CNC cryogels. These limitations are effectively overcome by hybridization of CNC/ENCC at an optimized weight ratio. Controlling the CNC/ENCC ratio allows for high tunability of rheological properties, enabling high-fidelity printing of 3D hydrogels, and mechanical performance of cryogels can be tailored by manipulating the CNC/ENCC ratio. Compared to neat CNC cryogels, CNC/ENCC (1:1) cryogels have 78% higher compressive strength. This research opens new opportunities for sustainable, biocompatible, and lightweight cellulosic structured scaffolds with a wide range of applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Hamed Mirzaei, Jack McClelland, Devansh Sharma, Mohammad Arjmand, Mohammad H. H. Zarifi
Summary: This study focuses on investigating the real-time resonant microwave behavior of two polydimethylsiloxane (PDMS) structures in interaction with tetrahydrofuran (THF) and acetone, which are primary swelling agents. The interaction of the PDMS structures with target gases alters their structure, resulting in changes in the dielectric properties of the PDMS/gas system. Microwave resonators show substantial potential as versatile tools for investigating the physical changes in polymers during their interaction with gases.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Majed Amini, Hadi Hosseini, Subhajit Dutta, Stefan Wuttke, Milad Kamkar, Mohammad Arjmand
Summary: This study addresses the limitations of 3D-printed electrically conductive structured biobased aerogels through molecular engineering, resulting in improved conductivity, mechanical strength, printing resolution, and the ability to address electromagnetic pollution.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Navid Keshmiri, Amir Hosein Ahmadian Hoseini, Parisa Najmi, Jian Liu, Abbas S. Milani, Mohammad Arjmand
Summary: This research aimed to improve the EMI shielding performance of highly conductive polymer nanocomposites (CPNs) by developing segregated structures through a dispersion mixing process. The nanocomposites were fabricated by dispersing polystyrene beads (PS), CNT, and PEDOT:PSS in deionized water, followed by filtration, treatment, and molding. The technique effectively constructed a highly conductive network in the PS/CNT nanocomposite, resulting in the lowest percolation threshold reported for CNT-based structures. Additionally, adding PEDOT:PSS significantly enhanced the conductive network. The PS/CNT/PEDOT:PSS nanocomposite exhibited high electrical conductivity and specific EMI shielding effectiveness.
Article
Engineering, Multidisciplinary
Parisa Najmi, Navid Keshmiri, Mohammad Ramezanzadeh, Bahram Ramezanzadeh, Mohammad Arjmand
Summary: This study presents a strategy to engineer polymer nanocomposites with desired multifunctionality by incorporating molybdenum disulfate decorated with covalent organic frameworks. The resulting coatings exhibit enhanced mechanical and thermal properties, as well as excellent UV-shielding and weathering resistance.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Environmental Sciences
Na Tian, Zahra Madani, Stefanos Giannakis, Ali Akbar Isari, Mohammad Arjmand, Farzad Hasanvandian, Mohammad Noorisepehr, Babak Kakavandi
Summary: A ternary hetero-junction system consisting of ZnO@CoFe2O4 (ZCF) anchored on activated carbon (AC) was prepared and used as a UV-assisted peroxymonosulfate (PMS) activator to enhance the degradation of diazinon (DZN) pesticide. The synergistic effect between ZCFAC, PMS, and UV resulted in the highest degradation efficiency of DZN. The study also investigated the operating conditions, synergistic effects, and possible pathways of DZN degradation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Physical
Saeed Ghaderi, Hadi Hosseini, Seyyed Arash Haddadi, Milad Kamkar, Mohammad Arjmand
Summary: Conductive polymers have recently been 3D printed through direct ink writing using PEDOT:PSS-based inks. Further research is needed to expand the applications of 3D-printed conductive polymers by fine-tuning their properties. Creating PEDOT:PSS inks with customizable electrical properties for high-fidelity printing remains a challenge.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Materials Science, Multidisciplinary
Sara Rostami, Ahmadreza Ghaffarkhah, Ali Akbar Isari, Seyyed Alireza Hashemi, Mohammad Arjmand
Summary: Aerogels of 2D nanomaterials are considered ideal platforms for encapsulating phase change materials (PCMs) due to their unique properties. This review provides a systematic overview of the state-of-the-art advances in 2D nanomaterial-based aerogel fabrication and their potential uses in composite PCMs. It aims to increase interest in interdisciplinary research and provide guidance for the rational design of advanced multifunctional 2D aerogel-based composite PCMs.
MATERIALS ADVANCES
(2023)
