Article
Chemistry, Multidisciplinary
Yasser Zare, Kyong-Yop Rhee, Soo-Jin Park
Summary: This study investigates the relationship between interfacial conductivity, CNT length, and the effective conductivity of polymer CNT nanocomposites. The research finds that a small CNT length and high interfacial conductivity can significantly impact the beginning of percolation and the effective conductivity. The developed model can be used for optimizing breast cancer cell sensors.
Article
Environmental Sciences
Krassimira Ilieva-Makulec, Anna Augustyniuk-Kram, Izabella Olejniczak, Kamil Karaban, Marek Nowicki, Tomasz Runka, Andrzej Kulczycki, Jaroslaw Kaluzny
Summary: The study found that multiwalled carbon nanotubes had a potential impact on soil organisms, especially with higher sensitivity in nematodes. Contamination by CNTs significantly affected the dynamics and diversity of soil fauna and microbial communities, potentially leading to long-term consequences for soil functioning and nutrient cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Bin Wu, Ya Li, Wei Chen, Boyang Ding, Peng Chen, Ru Xia, Jiasheng Qian
Summary: This study successfully constructs a low thermal resistance interface structure by functionalizing cationic polymer on graphene surface, creating a dual channel for heat transfer. This results in improved thermal conductivity of the composite material.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Yasser Zare, Kyong Yop Rhee
Summary: The effective DC conductivity of polymer-graphene composites is modeled by contact resistance and interphase depth. The resistances of polymer layer and graphene nanosheets in the contact spaces define the contact resistance. The effective filler concentration reveals the interphase role in the conductivity. The effective conductivity is correlated to the concentration, thickness, and conduction of graphene, as well as interphase depth, tunnel resistivity, contact diameter, contact distance, and percolation onset.
Article
Thermodynamics
Janki Shah, Mukesh Ranjan, Prachi Thareja, Patrice Estelle
Summary: The objective of this research is to examine how ultrasonication time affects the properties of CuO nanofluid. It is found that at an optimal sonication time of 80 min, the particle dispersion is more stable, and the nanofluid has the lowest viscosity and maximum thermal conductivity.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Multidisciplinary
Dong-Kwan Lee, Jongchan Yoo, Hyunwoo Kim, Sung-Hoon Park
Summary: In this study, we prepared multi-walled carbon nanotubes (MWNTs) with different aspect ratios and fabricated composites to investigate their electrical conductivity and electromagnetic interference (EMI) shielding performance. The results provide valuable guidance for designing polymer MWNT composites with good electrical conductivity and EMI shielding performance.
Article
Multidisciplinary Sciences
Yuxin Ouyang, Lin Qiu, Yangyang Bai, Wei Yu, Yanhui Feng
Summary: This study investigates the out-of-plane thermal transport of MXene nanosheets with different fillers. It was found that the addition of GO and CNF can modulate the thermal properties of MXene composites by changing the interlayer spacing and spatial configuration of fillers.
Article
Multidisciplinary Sciences
Yuxin Ouyang, Lin Qiu, Yangyang Bai, Wei Yu, Yanhui Feng
Summary: This study investigates the influence of different fillers (GO and CNF) on the interlayer spacing and thermal conductivity of MXene. It is found that the addition of GO suppresses the out-of-plane thermal transport, while the addition of CNF increases the thermal conductivity of MXene. This finding provides important guidance for tailoring the thermal properties of MXene composites.
Article
Materials Science, Composites
Junwei Lv, Yitian Qin, Zheng Li, Jiaxiang Liu, Xu Wang, Xiangyang Liu, Yang Liu
Summary: This article investigates the enhancement effect of FCNTs on the properties of natural rubber, revealing the influence of temperature on dormant radicals and the correlation between initiation abilities of FCNTs and their fluorine contents. The introduction of FCNTs successfully increases the tensile strength of rubber composites and exhibits excellent microwave absorption properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
Ouyang Fang, Zhao JianGuo, Li Zhi, Xiao ZengJia, He YanXiao, Zhao Hao, Ren Jing
Summary: A method for calculating pore aspect ratio distribution using thought experiment was proposed to improve the classical D-Z pore structure model, resulting in a detailed inversion workflow incorporating four effective medium theories. The proposed method showed better agreement with actual data compared to the D-Z model, and was almost independent of the selection of effective medium theories.
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
(2021)
Article
Chemistry, Physical
Dong-Kwan Lee, Jongchan Yoo, Hyunwoo Kim, Byung-Ho Kang, Sung-Hoon Park
Summary: Studies have shown that nanofillers such as carbon nanotubes play a significant role in improving the thermal conductivity of polymers, with multi-walled carbon nanotube/polymer composites exhibiting excellent electrical and thermal properties, making them suitable for use as flexible and lightweight heat transfer materials.
Article
Chemistry, Physical
Pingjian Niu, Yufeng Luo, Hean Zhang, Qianling Cui, Lidong Li
Summary: This work presents a simple method for the in situ growth of graphitic carbon nitride on the surface of multiwalled carbon nanotubes. The introduction of carbon nitride improves the interfacial properties of the carbon nanotubes, enhancing both thermal conductivity and electrical insulation. This is highly beneficial for interfacial thermal management applications that require high thermal conductivity and electrical insulation properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Multidisciplinary
Mohanachandran Nair Sindhu Swapna, Dorota Korte, Sankaranarayana Iyer Sankararaman
Summary: Diversified heat engines require energy-efficient engine oils and coolants. This article proposes a method of tuning the thermal diffusivity of the base fluid (ethylene glycol) by using multiwalled carbon nanotubes (MWCNTs) annealed at different temperatures, without changing the solid volume fraction. The study investigates the structure modifications of MWCNTs induced by annealing and explores the variations in thermal diffusivity using the photothermal mode-mismatched dual-beam thermal lens technique. The research reveals that annealing-induced structure modifications decrease the thermal diffusivity of the nanofluid and identifies a transition annealing temperature above which the nanoparticles can act as heat trappers. The study also emphasizes the importance of maintaining the temperature of engine oil below the transition temperature for more energy-efficient engine oils.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Polymer Science
Yikai Xing, Muxuan Li, Baowei Qiu, Hao Zhang, Yang Chen, Liwei Yan, Zhengguang Heng, Mei Liang, Huawei Zou
Summary: The construction of multiscale nanostructures on the carbon fiber surface using trifunctional polyetheramine modified graphene oxide and epoxy resin has been shown to effectively improve the interfacial performance of carbon fiber reinforced epoxy composites. Different types of epoxy resins and varying amounts of graphene oxide were used to achieve carbon fibers with different surface morphologies and interfacial layers with different mechanical properties. The multiscale nanostructures improved both the wettability between carbon fibers and the polymer matrix and the interfacial shear strength of the composites.
Article
Energy & Fuels
Ganesh Kumar Poongavanam, Vinothkumar Sivalingam, Santosh Ravichandran, Amrit Kumar Thakur, Sung Chul Kim
Summary: In this study, response surface methodology was used to optimize the thermal and electrical conductivity characteristics of a nanofluid comprising MWCNT-SG/H2O blend. The results showed that the MWCNT volume concentration and operating temperature significantly influence the thermal and electrical conductivities of the nanofluid, with experimental results confirming the optimization outcomes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)