Article
Chemistry, Multidisciplinary
Ziwei Mo, Jiaqian Zhou, Xin Lu, Lirong Liang, Fusheng Liu, Zhuoxin Liu, Guangming Chen
Summary: Thermal energy is widely distributed and generated in nature and society, and thermocells (TECs) have become a promising technology to convert thermal energy into electricity. However, the use of noble platinum electrodes in TECs limits their widespread applications due to the scarcity and rigidity of platinum. In this study, we propose a facile method to construct flexible electrodes with optimized nanostructures, using conducting polypyrrole nanospheres decorated on a single-walled carbon nanotube network. The resulting flexible composite electrode shows superior thermoelectrochemical performance compared to the noble platinum electrode.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Polymer Science
Federica Zaccardi, Elisa Toto, Fabrizio Marra, Maria Gabriella Santonicola, Susanna Laurenzi
Summary: In this study, the processability and volumetric electrical properties of aerospace-grade RTM6 nanocomposites loaded with different carbon nanoparticles were investigated. Nanocomposites containing graphene nanoplatelets (GNP), single-walled carbon nanotubes (SWCNT), and hybrid GNP/SWCNT with different ratios were manufactured and analyzed. The hybrid nanofillers showed synergistic properties, providing better processability and maintaining high electrical conductivity compared to epoxy/SWCNT nanocomposites. The use of hybrid nanofillers overcame the manufacturing issues associated with SWCNTs, making it a promising candidate for aerospace-grade nanocomposites with multifunctional properties.
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
Chemistry, Analytical
Xoan F. Sanchez-Romate, Alberto Jimenez-Suarez, Monica Campo, Alejandro Urena, Silvia G. Prolongo
Summary: The electrical and electromechanical properties of hybrid graphene nanoplatelet (GNP)/carbon nanotube (CNT)-reinforced composites were analyzed under two different sonication conditions. The electrical conductivity increases with increasing nanofiller content, while the optimal sonication time decreases in a low viscosity medium. Samples with a higher GNP/CNT ratio show a higher prevalence of GNPs, with an exponential behavior of electrical resistance with applied strain and gauge factors reaching around 10.
Article
Biochemistry & Molecular Biology
Carlos Bruno Barreto Luna, Emanuel Pereira do Nascimento, Danilo Diniz Siqueira, Bluma Guenther Soares, Pankaj Agrawal, Tomas Jeferson Alves de Melo, Edcleide Maria Araujo
Summary: Nylon 6/acrylonitrile-butadiene-styrene nanocomposites have been produced for electromagnetic interference shielding and antistatic packaging. The addition of multi-wall carbon nanotubes and a compatibilizer has improved their electrical conductivity and mechanical performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Manufacturing
Ayaka Aoki, Toshio Ogasawara, Takuya Aoki, Yuichi Ishida, Yoshinobu Shimamura, Yoku Inoue
Summary: This study utilized polarized Raman spectroscopy to assess the strain in aligned multi-walled carbon nanotube/epoxy composites, aiming to clarify the effective elastic modulus of the carbon nanotubes. The Raman shift rate of the G' band of the carbon nanotubes was found to be 18.84 cm(-1)/% corresponding to the tensile strain of the composite specimen. Through Mori-Tanaka theory and consideration of the three-dimensional orientation distribution of the carbon nanotubes, the effective elastic modulus of the carbon nanotubes was estimated to be 400 GPa. The results demonstrated the utility of Raman spectroscopy in experimentally evaluating the effective elastic modulus of multi-walled carbon nanotubes in composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Huan Ma, Siyue Xu, Yang Gao, Wei Liu, Xiaoxiao Wei, Mohamed Amine Aouraghe, Fujun Xu
Summary: This study demonstrated an innovative physical strategy of wet cryogenic treatment to improve the properties of porous CNT assembly, leading to enhanced tensile strength, toughness, and strain sensitivity.
Article
Chemistry, Multidisciplinary
Po-Shen Lin, Jhih-Min Lin, Shih-Huang Tung, Tomoya Higashihara, Cheng-Liang Liu
Summary: This study focuses on the fabrication of nanocomposite thermoelectric devices by blending polymers with carbon nanotubes and doping them to alter their conductivity properties. Various analyses were performed to understand the effects of polymer-SWCNT interactions on the doping outcomes. The NDI-T1/SWCNT nanocomposite exhibited the best electrical performance, while an integral thermoelectric generator using different polymers achieved an output power of 27.2 nW.
Article
Electrochemistry
Grzegorz Stando, Pawel Stando, Mika Sahlman, Mari Lundstrom, Haitao Liu, Dawid Janas
Summary: In this study, nanocomposites consisting of different forms of polyaniline and carbon nanotubes were synthesized. The addition of emeraldine salt polyaniline significantly improved the electrical conductivity and supercapacitor capacity of the nanocomposites, while also enhancing their mechanical properties.
ELECTROCHIMICA ACTA
(2023)
Article
Polymer Science
Zeinab Mousavi, Marie-Claude Heuzey, Pierre J. Carreau
Summary: The effect of adding multiwall carbon nanotubes (CNTs) on the morphology and properties of compatibilized PLA/PA11 blends was evaluated. Pre-mixing CNTs with PLA led to the formation of a network-like structure with non-spherical, non-coalescing PA11 domains bridged by CNTs. The nanocomposites showed a transition from liquid-to-solid behavior with increasing CNT concentration, but the electrical conductivity remained in the insulating range due to inadequate interconnectivity of PA11-CNT domains.
Article
Polymer Science
Matheus Mendes de Oliveira, Sven Forsberg, Linnea Selegard, Danilo Justino Carastan
Summary: Graphene nanoplatelets (GNP) and carbon nanotubes (CNT) are used to enhance electrical and mechanical properties of epoxy-based nanocomposites. Direct and indirect ultrasonication methods were used to prepare single- and hybrid-filled GNP-CNT-epoxy nanocomposites, with results showing that high-power direct sonication degrades electrical conductivity in the nanocomposites while indirect sonication improves dispersion and conductivity. Dynamic mechanical analysis revealed that nanofillers improved epoxy's storage modulus by up to 84%, with processing parameters having limited effect on this property. However, the decrease in crosslinking degree and presence of residual solvent lowered the glass transition temperature due to plasticization effects.
Article
Materials Science, Composites
Afrooz Eshraghian, Milad Kamkar, Mohammad Asgari, Mohammad Arjmand, Uttandaraman Sundararaj
Summary: This study investigates the effect of functionalized nanoclay on the dielectric properties of synthesized nitrogen-doped carbon nanotube (N-CNT)/nanoclay/polyvinylidene fluoride (PVDF) nanocomposites prepared via melt-mixing in the X-band. The results show that the incorporation of nanoclay improved the dielectric properties, reduced dissipation factor, and expanded the percolation region of the N-CNT/PVDF nanocomposites. The addition of nanoclay also reduced the agglomeration area ratio and caused the collapse of N-CNT networks in the nanocomposites.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Ceramics
Daeik Jang, H. N. Yoon, Joonho Seo, Solmoi Park
Summary: Incorporating silica aerogel into carbon nanotube-embedded cementitious composites can effectively reduce water ingress and improve heating performance.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Jordana K. Palacios, Achraf Ben Fekih, Cristina Yus Argon, Silvia Irusta, Simon Jestin, Sylvie Dagreou
Summary: The aim of the study was to improve the processability and reduce the melt viscosity of nanocomposites based on PA66 and CNT, while maintaining good electrical conductivity. By adding GNP, viscosity was decreased significantly, but electrical conductivity was slightly diminished. Furthermore, GNP acted as nucleating agents, enhancing the crystallization ability of PA66.
POLYMER INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Marcel Zambrzycki, Szymon Los, Aneta Fraczek-Szczypta
Summary: This study extensively analyzed the correlations between the structure and electrical properties of hierarchical nanocomposites, focusing on the impact of iron (III) acetylacetonate on core-eCNFs and the overall ordering and electrical properties of the nanocomposites. The investigation revealed that increasing Fe(Acac)(3) concentration resulted in higher CNT surface density, positively affecting electrical transport but causing amorphisation of core-eCNFs and increased activation energy. It was estimated that an Fe(Acac)(3) concentration of approximately 3.0% ensures the best electrical properties, and desorption of electrically active guest molecules leads to notable changes in electronic transport.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Yangyang Xin, Jian Zhou, Hussein Nesser, Gilles Lubineau
Summary: Wearable healthcare sensors with real-time monitoring capabilities are gaining popularity. The challenge lies in maintaining reliable data while ensuring comfortable wear with good stretchability. This study discusses strain-insensitive design strategies compatible with large deformations and explores the potential of using the Seebeck effect for strain-insensitive sensors.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Mechanics
Chiara Morano, Ahmed Wagih, Marco Alfano, Gilles Lubineau
Summary: This study investigates the mechanical performance of adhesive bonded composite/metal T-joints. The results show that by tailoring the architecture of the stiffener, using corrugated flanges with a square wave profile, superior performances can be achieved, with an increase of +65% in pull-off strength and +416% in absorbed energy compared to the conventional configuration.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
Muhammad Basha, A. Wagih, T. Khan, G. Lubineau, T. A. Sebaey
Summary: This paper demonstrates that using thin plies can enhance the flexural response of conventional composites at elevated temperatures. The laminates containing thin plies showed higher flexural strength and modulus at all tested temperatures. The presence of thin plies delayed compressive fiber damage, interrupted heat flow, and reduced delamination and matrix cracks.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Mathematics, Interdisciplinary Applications
Bram van der Heijden, Yunteng Wang, Gilles Lubineau
Summary: This paper proposes a data-driven approach to predict mechanical responses for structures directly from full-field observations obtained on previously tested structures. The approach uses raw data, called patches, comprising displacement fields obtained during data harvesting through full-field measurement. A library of such patches is compiled to compute responses for new structures, and the approach is not limited to specific types of structures or mechanics.
COMPUTATIONAL MECHANICS
(2023)
Article
Polymer Science
Mohammad K. A. Khan, Harri Junaedi, Hassan Alshahrani, Ahmed Wagih, Gilles Lubineau, Tamer A. Sebaey
Summary: This study demonstrated an enhancement in notch sensitivity of a hybrid carbon/epoxy (CFRP) composite with a Kevlar core sandwich compared to monotonic CFRP and Kevlar composites. Open-hole tensile samples with different width to diameter ratios were tested, showing that the hybrid laminate has lower notch sensitivity and a higher specific strength compared to CFRP and KFRP laminates. The enhancement in notch sensitivity was attributed to its progressive damage mode and the lower density of Kevlar fibers in the hybrid composite.
Article
Materials Science, Multidisciplinary
Ruslan Melentiev, Ran Tao, Gilles Lubineau
Summary: Electrochemical plating is widely used for coating commodity polymers, but the traditional process using chromic acid produces hazardous waste. This study proposes a greener route by hot-embossing and acid-etching the ABS polymer before plating, which greatly enhances coating adhesion and reduces etching time. Microscopic characterization shows that the adhesion strength at the hierarchical interface exceeds that of the ABS polymer. This method can significantly reduce the use of toxic acids in the electroplating industry without compromising the coating quality.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Arief Yudhanto, Xiaole Li, Ran Tao, Ruslan Melentiev, Gilles Lubineau
Summary: This paper reviews recent advances in the evaluation of metal-polymer adhesion through tape test and peel test in electroplating processes, with a focus on electroplated copper-ABS as a case study. The article also provides recommended practices for using these tests to assess metal-polymer adhesion. This review is expected to guide engineers and scientists in achieving superior metal-polymer adhesion through effective electroplating formulations.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Ruslan Melentiev, Ran Tao, Lujain Fatta, Amit K. Tevtia, Nikhil Verghese, Gilles Lubineau
Summary: Electroplating on polymers involves chemical and mechanical interactions of the surface to ensure adhesion. However, the relative contributions of these factors have been debated without quantitative evidence. This study separates the contribution of polymer chemistry by using non-interlocking micro-textures with varied surface area. The results show that chemical adhesion only contributes a minor fraction to the overall adhesion strength in electroplating.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Fatimah Aldakheel, Konstantinos Ntetsikas, Arief Yudhanto, Gilles Lubineau, Nikos Hadjichristidis
Summary: Grafting non-polar polymer chains on the surface of polar nanoparticles enhances particle/matrix interactions, leading to improved mechanical properties in non-polar matrices. In this study, omega-triethoxysilyl polystyrene (PS-TEOS) and PS-b-PI macromonomers were synthesized and hydrolyzed/condensed to form grafted silica nanoparticles with either PS or PS-b-PI chains. The molecular characteristics and formation of the nanoparticles were confirmed using various techniques. Blends of the nanoparticles with PS and PS-b-PI were obtained and their mechanical properties and morphological features were examined. This method provides a way to control the properties of PS-based nanocomposites.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Chiara Morano, Nao Terasaki, Tianyi Gao, Gilles Lubineau, Marco Alfano
Summary: We investigate the mechanics of crack propagation in adhesive joints inspired by the base plate of the barnacle Amphibalanus amphitrite. The joints feature buried hollow cylindrical channels that modulate the strain energy release rate (ERR) and enable a crack-tip shielding mechanism. Finite element simulations and experiments validate the occurrence of crack pinning/depinning cycles. Mechanoluminescent (ML) coating is used to study the transient stress field in the crack tip region, revealing details of snap-through cracking in the bio-inspired adhesive joints.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Computer Science, Interdisciplinary Applications
Y. Wei, Q. Serra, G. Lubineau, E. Florentin
Summary: In this study, a new technique based on physics-informed neural networks (PINNs) is proposed to implement constitutive equation gap method (CEGM) optimization process, which allows for easy construction of the admissible stress field with the help of automatic differentiation. The proposed method is compared with classical identification strategies and demonstrated its effectiveness in simple 2D cases and tomographic images, showing its great potential for practical applications.
COMPUTERS & STRUCTURES
(2023)
Article
Energy & Fuels
Ali M. Alkadhem, Fernanda Tavares, Natalia Realpe, Gontzal Lezcano, Arief Yudhanto, Mohammad Subah, Vasco Manacas, Jacek Osinski, Gilles Lubineau, Pedro Castano
Summary: Reforming processes for hydrogen production can be improved by incorporating SiC in the catalyst, optimizing constituent mixtures, and addressing heat transfer issues. Various techniques are used to characterize the catalysts and their properties, and models are created to simulate industrial reformers. The results lead to optimal catalyst formulations and showcase the influence of individual and combined constituents at different scales.
Article
Multidisciplinary Sciences
Roisul Hasan Galib, Yanpei Tian, Yue Lei, Saichao Dang, Xiaole Li, Arief Yudhanto, Gilles Lubineau, Qiaoqiang Gan
Summary: Global warming exacerbates heat stress, posing a threat to human and social sustainability. To efficiently cool down, reliable and energy-efficient cooling methods are highly desired. Researchers have developed a polyacrylate film made from a self-moisture-absorbing hygroscopic hydrogel for efficient hybrid passive cooling. This film utilizes sodium polyacrylate, one of the lowest-cost industrial materials, to achieve radiative cooling by reducing solar heating and maximizing thermal emission. The manufacturing process uses atmospheric moisture only, without the need for additional chemicals or energy consumption, making it an environmentally friendly process. Under sunlight illumination, the film's surface temperature was reduced by 5 degrees C under partly cloudy skies. The film's hygroscopic feature enables evaporative cooling independent of access to clear skies. This hybrid passive cooling approach is projected to reduce global carbon emissions by 118.4 billion kg/year compared to current electricity-powered air conditioning facilities. The film, with its low-cost raw materials and excellent molding feature, can be manufactured through simple and cost-effective roll-to-roll processes, making it suitable for future building construction and personal thermal management needs.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hussein Nesser, Hassan A. Mahmoud, Gilles Lubineau
Summary: Structural health monitoring (SHM) is essential for ensuring safety in various applications. Traditional sensors have limitations, but a new technology using RFID allows wireless transmission of strain measurement data. The novel sensor based on LC circuit and cracked capacitor electrodes offers a wireless strain sensor with high sensitivity. This wire-free, power-free design can be easily integrated into composites without compromising structural integrity, providing a cost-effective and non-destructive solution for accurate structural health monitoring.
Article
Materials Science, Multidisciplinary
Arief Yudhanto, Alwaleed Aldhirgham, Eric Feron, Gilles Lubineau
Summary: The article introduces the use of classical compression molding process to post-consolidate 3D-printed continuous carbon fiber-reinforced polyamide (CFPA) composites, reducing the voids and studying its influence on microscale parameters (void content) and mesoscale parameters (mechanical properties, plasticity, damage).
FRONTIERS IN MATERIALS
(2023)