Article
Materials Science, Composites
Haoran Liao, Tao Yu, Yan Li
Summary: GO/PA6 nanocomposites with different graphene content were prepared via in situ polymerization, and their rheological properties and thixotropy were studied using rheological methods.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Esmail Sharifzadeh, Neda Azimi, Alireza Zamanian-Fard, Reza Mohammadi
Summary: This study evaluates the formation of clay nanolayer clusters in the high-density polyethylene matrix using an energy equilibrium strategy. The interphase region around the nanoparticle domains is precisely evaluated based on the molecular structure of the matrix and the variation of physical/mechanical characteristics. The obtained results are used to predict the tensile modulus of the nanocomposite system containing randomly oriented nanoparticle domains.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zengyuan Pang, Erol Yildirim, Melissa A. Pasquinelli, Qufu Wei
Summary: In this study, molecular dynamics simulations were used to directly calculate the properties of PA6/PANI nanofiber ammonia gas sensors and their interactions with ammonia. The sensors showed rapid response, ideal selectivity, and acceptable repeatability, with the simulations providing insights into the molecular-level details of the ammonia sensing performances of the system.
Article
Polymer Science
Rodrigo Fiel, Ingrid D. Barcelos, Ricardo H. Goncalves, Mario R. S. Soares, Gabriel Rocha, Caio M. P. Silva, Valmor R. Mastelaro, Edson R. Leite
Summary: This study presents a simple one-pot approach to exfoliate and functionalize MoS2 to form nanocomposites with a polymer matrix, demonstrating improved thermal stability while affecting the glass transition temperature and mechanical properties.
Article
Materials Science, Multidisciplinary
Menglong Xu, Linfeng Wei, Li Ma, Jiawei Lu, Tao Liu, Ling Zhang, Ling Zhao, Chul B. Park
Summary: The study successfully fabricated microcellular foamed polyamide 6/carbon nanotube composites with high-efficiency electromagnetic wave absorption using supercritical CO2 foaming. This eco-friendly and versatile methodology offers a simple way to develop flexible polymer-based electromagnetic wave absorbents.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Weiqi Cao, Majid Shaker, Xiaomin Meng, Huan Feng
Summary: In this study, graphene was mass-produced using ultrasonic-assisted exfoliation in NMP and mixed with polyamides to obtain a high thermal conductivity engineering polymer (GP6). GP6 has a thermal conductivity of 30 W m(-1) K-1 and a density of 1.8 g cm(-1). It can be used in heat dissipation systems of LED lamps and cameras, reducing costs and carbon emissions.
Article
Chemistry, Multidisciplinary
Luisa Rosenstock Voltz, Shiyu Geng, Anita Teleman, Kristiina Oksman
Summary: This study investigates the possibility of adding nanocellulose to a polymer with a high melting temperature, and emphasizes the improvement of mechanical properties in nanocomposites through solid-state drawing.
Article
Energy & Fuels
Yanrong Zhu, Sandeep Kottarath, Jude O. Iroh, Richard A. Vaia
Summary: This study demonstrates the control of the structure of polyaniline-montmorillonite clay nanocomposites by varying the concentration of the oxidant. Various characterization techniques were used to investigate the structure of the nanocomposites, and electrochemical impedance spectroscopy analysis showed that the nanocomposite coating with highly intercalated clay exhibited enhanced durability.
Article
Materials Science, Composites
Ziyan Man, Boyang Wan, Hongjian Wang, Qing Li, Li Chang
Summary: In this study, scratch tests were conducted to investigate the surface deformation behavior of additively manufactured continuous carbon fiber reinforced polyamide 6 composites. The effect of fiber orientation on scratch deformation modes was examined, with different scratch directions considered. It was found that fiber orientation greatly influenced the critical loads for the transitions between deformation modes, with samples having fibers in the normal direction more prone to fiber breakage and removal. A finite element model was also established to analyze the stresses generated on fibers in the contact region, with a focus on interfacial bonding and fiber distribution. The research contributes to a deeper understanding of the scratch and tribological performance of carbon fiber reinforced polymers, providing guidelines for the design and selection of such materials using additive manufacturing technology.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Applied
V. N. Aderikha, V. N. Koval'
Summary: The study focused on the effects of adding maleinized low-molecular-mass polybutadiene rubber on the structure and mechanical properties of polyamide 6 and its composites. The enhancement in strength, elastic moduli, extension stress, and elongation at break were observed due to the modification of polyamide with maleinized rubber. The addition of montmorillonite and maleinized rubber together resulted in similar changes in rheological and strength characteristics of the nanocomposites as observed in the modification of unfilled polyamide 6. Increased clay exfoliation and clay particle orientation during processing of modified composites led to improvements in bending elastic modulus and bending strength.
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Zaib un Nisa, Lee Kean Chuan, Beh Hoe Guan, Faiz Ahmad, Saba Ayub
Summary: This study aimed to investigate the thermal, morphological, and crystalline characteristics of polyamide-6@carbon char-based nanocomposites. Mesoporous nanosized carbon char was prepared via the carbonization method. The coconut shell-based biocarbon char was confirmed by surface area and particle size analysis, and X-ray diffraction analysis. Polyamide-6 nanocomposites were prepared using synthesized mesoporous carbon char as filler. The obtained nanocomposites were analyzed using various techniques. The research showed that loading coconut shell-based carbon char to polyamide-6 can modify its thermal, morphological, and crystalline properties.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Shahryar Malekie, Hassan Shooli, Mohammad Amin Hosseini
Summary: This study introduces new composites for protecting against ionizing photon sources. The composites demonstrate good performance in absorbing low-energy photon radiation and attenuating medium to high-energy radiation. The inclusion of fillers improves the thermal durability of the samples.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Rossella Surace, Claudia Pagano, Vincenzo Bellantone, Simone Gatti, Leonardo Castellani, Massimo Vighi, Gregory Stoclet, Sara Sechi, Irene Fassi, Francesco Baldi
Summary: This study investigated the moldability and microstructural characteristics of nano-filled PA6 based systems via micro-injection molding compared to traditional injection molding. Different thermomechanical histories during the two molding processes led to different microstructures in the micro- and macro-parts, influenced by the type of filler. The presence of nano-fillers did not hinder the mold replication capability of PA6 in micro-injection molding.
Article
Engineering, Multidisciplinary
Maziyar Bazmara, Mohammad Silani, Iman Dayyani
Summary: In nanocomposites, the interphase thickness and properties variability across the interphase are important factors affecting the overall mechanical properties, especially at higher clay weight ratios. Young's modulus variation of the interphase significantly impacts the overall elastic response, while strength variation affects the elasto-plastic properties of the nanocomposites. Changes in stiffness from clay to matrix in the interphase have a similar effect on the overall behavior of nanocomposites.
DEFENCE TECHNOLOGY
(2021)
Article
Polymer Science
Nampally Bikshamaiah, Nandru Mohan Babu, Danikonda Suresh Kumar, Suramoni Ramesh, Dumpala Madhuri, Annadanam V. Sesha Sainath, Katakam Madhukar
Summary: Nanocomposites of PA6-PMMA-f-SWCNTs were investigated for morphology, mechanical and XRD properties. The f-SWCNTs acted as functional group-dependent compatibilizers, enhancing the compatibility and improving the melt strength and tensile modulus of the PA6-PMMA blends.
IRANIAN POLYMER JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Lulu Li, Zhiming Deng, Mengjie Chen, Zhong-Zhen Yu, Thomas P. Russell, Hao-Bin Zhang
Summary: In this work, an emulsion-based ink for direct printing using 2D nanomaterials MXene and graphene oxide (GO) is described. The electrostatic interactions between the ligands in the oil phase and the 2D nanomaterials in the aqueous phase result in sheet-like surfactants at the interface. The anchored ligands between different droplets determine the rheological characteristics of inks, enabling gel-like behavior suitable for 3D printing at ultralow concentrations of 2D nanomaterials. The printed foams have lightweight structures and integrate outstanding electrical conductivity, electromagnetic shielding performance, and thermal insulation comparable to air.
Article
Chemistry, Physical
Changjun Li, Wei Li, Hao-Yu Zhao, Xin-Yue Feng, Xiaofeng Li, Zhong-Zhen Yu
Summary: In this study, a central hollow cylindrical reduced graphene oxide (RGO) foam with vertically and radially oriented channels is designed for efficient water evaporation and purification. The foam achieves a high solar steam generation rate and exceptional energy conversion efficiency by enhancing water and heat transfer inside the porous channels, and utilizing both solar and environmental energy.
Review
Materials Science, Multidisciplinary
Sheron Tavares, Kesong Yang, Marc A. Meyers
Summary: Heusler alloys have emerged as exciting materials for various functional applications due to their ordered structure and unique properties. This review article discusses the discovery, magnetic and electronic properties, mechanical properties, and computational design of Heusler alloys. It also explores the challenges and future directions in this field.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Ming-Hong Sun, Changjun Li, Ji Liu, Peng Min, Zhong-Zhen Yu, Xiaofeng Li
Summary: A highly efficient three-dimensional mirror-assisted and concave pyramid-shaped solar-thermal water evaporation system is demonstrated for high-yield and long-term desalination of seawater and high-salinity brine water. The system utilizes multiple solar light reflections to absorb more solar energy and improves the solar-thermal energy conversion efficiency. It also achieves selective accumulation to resist salt corrosion. The system achieves a record high water evaporation rate of 4.75 kg m(-2) h(-1) and exhibits long-term desalination stability, showing great applicability and reliability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Bai-Xue Li, Zhuo Luo, Wei-Guang Yang, Hao Sun, Yun Ding, Zhong-Zhen Yu, Dongzhi Yang
Summary: A trilayer composite material integrating various functions such as thermal insulation, heat absorption, solar/electro-thermal conversions, and thermochromism has been developed for visible and infrared dual camouflages. It can hide target signatures from infrared images and visually blend with the surroundings in different scenarios, providing an adaptive and adjustable camouflage solution against multiband surveillance in complex environments.
Article
Chemistry, Multidisciplinary
Hao-Yu Zhao, Chao Shu, Xin Wang, Peng Min, Changjun Li, Fu-Lin Gao, Xiaofeng Li, Zhong-Zhen Yu
Summary: To overcome the limitations of phase change materials in solar-thermal conversion, researchers constructed pyramidal graphitized chitosan/graphene aerogels with radial alignment of graphene sheets. The resulting composite demonstrated high thermal conductivity, superior solar-thermal energy conversion and storage efficiency, and an attractive maximum temperature. Inspired by waterlilies, solar-responsive phase change composites were designed for the first time, achieving higher temperatures at night and enabling the generation of electricity even after solar irradiation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qun Liu, Zhenlu Yu, Qiuna Zhuang, Jang-Kyo Kim, Feiyu Kang, Biao Zhang
Summary: Hydrogel electrolytes have been widely studied in Zn metal batteries for wearable electronics, but the mechanical stability of the hydrogel under repeated deformation has been overlooked, resulting in unsatisfactory performance. This study explores the compressive fatigue-resistance properties of the hydrogel electrolyte and identifies the critical roles of the salt and copolymer matrix in crack initiation and propagation. An optimal Zn(ClO4)(2)-polyacrylamide/chitosan hydrogel electrolyte (C-PAMCS) is found to exhibit an unprecedented lifespan and high areal capacity for Zn//Zn cells, enabling potential applications in flexible Zn-ion batteries.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hong-Jun Liu, Cheng-Ye Yang, Mei-Chen Han, Chun-Yu Yu, Xiaofeng Li, Zhong-Zhen Yu, Jin Qu
Summary: Constructing an efficient artificial solid electrolyte interface (SEI) film is crucial for the practical application of lithium metal batteries. In this study, a dense artificial SEI film consisting of lithiophilic Zn/LixZny dispersed in consecutive Li+-conductors of LixSiOy, Li2O, and LiOH is successfully constructed. The consecutive Li+-conductors promote the desolvation process of solvated-Li+ and regulate the transfer of lithium ions, while the nonconsecutive lithiophilic metals are polarized to enhance the transfer of lithium ions and reduce nucleation barrier. The achieved results include low polarization of approximately 50 mV for 750 h at 2.0 mA cm(-2) in symmetric cells and high capacity retention of 99.2% in full cells with a high lithium iron phosphate loading.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jing Wu, Jin Qu, Guang Yin, Tingting Zhang, Hao-Yu Zhao, Fan-Zhen Jiao, Ji Liu, Xiaofeng Li, Zhong-Zhen Yu
Summary: A novel solar-driven water purification device was designed by decorating three-dimensional pinecones with MoS2 nanoflowers via a one-step hydrothermal synthesis. This device utilizes the vertically arrayed channels in the central rachis and the unique helically arranged scales of the hydrothermal pinecone to transfer water upward and absorb solar light for solar-thermal evaporation and photodegradation of wastewaters. The decorated MoS2 nanoflowers enhance the solar-thermal energy conversion efficiency and decompose organic pollutants through their photocatalytic degradation effects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Jie Yang, Xi Shen, Wei Yang, Jang-Kyo Kim
Summary: This review summarizes recent advances in the development of thermally conductive polymer composites using various templating methods, including self-templating, sacrificial templating, foam-templating, ice-templating, and template-directed chemical vapor deposition techniques. These unique methods allow for the fabrication of three-dimensional interconnected fillers with segregated, cellular, lamellar, and radially aligned structures, which are correlated to the thermal conductivity of the composites. Moreover, the review highlights the use of multiscale structural design strategies combined with different templating methods to further improve the thermal conductivity of the composites.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yang Li, Liangyu Li, Yunhe Zhao, Canbin Deng, Zhibin Yi, Diwen Xiao, Nauman Mubarak, Mengyang Xu, Jie Li, Guangfu Luo, Qing Chen, Jang-Kyo Kim
Summary: A hierarchical nanoporous electrode is developed by alloying Cu foam with Zn to homogenize the deposition and create nanoscale pores. This electrode shows uniform Zn deposition and stable performance in a Zn-I-2 flow battery, meeting practical demands.
Article
Materials Science, Multidisciplinary
Lvxuan Ye, Liu-Xin Liu, Guang Yin, Yunfang Liu, Zhiming Deng, Cheng-Zhang Qi, Hao-Bin Zhang, Zhong-Zhen Yu
Summary: By employing a coaxial wet-spinning assembly strategy, multifunctional hollow core-shell fibers with a ductile polyvinylidene fluoride (PVDF) shell and compactly ordered MXene hollow core were fabricated to achieve satisfactory chemical resistances, high electrical conductivity, and enhanced ductility. The partial hydroxylation of PVDF during coagulation enhanced the interfacial interaction between the PVDF and MXene layers. The hollow core, consisting of a compact and ordered MXene layer, provided the fibers with high electrical conductivity, while the PVDF shell endowed them with enhanced ductility and excellent resistances to acid, alkali, and seawater. The hollow core-shell structure made the fibers lightweight and facilitated multiple scattering of electromagnetic waves, resulting in increased electromagnetic wave absorption and attenuation. The resulting fibers exhibited exceptional Joule heating performances and a high electromagnetic interference shielding effectiveness, making them promising for wearable heating and electromagnetic interference shielding applications.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Chao Shu, Hao-Yu Zhao, Xiao-Hang Lu, Peng Min, Yan Zhang, Qianlong Wang, Xiaofeng Li, Zhong-Zhen Yu
Summary: In this study, a high-quality, anisotropic graphene aerogel is designed and a phase change composite with desired thermal conductivity and high latent heat storage capacity is fabricated using a specific process. The phase change composite exhibits remarkable solar energy absorption and solar-thermal conversion capacities, making it efficient for solar-thermal-electrical energy conversion applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Zhuo Luo, Bai-Xue Li, Hao Sun, Ji Liu, Hao-Yu Zhao, Zhong-Zhen Yu, Dongzhi Yang
Summary: A dual-functional metafabric with reduced graphene oxide (RGO) decorated nanoporous polytetrafluoroethylene (PTFE) is designed for personal thermal management. It integrates both cooling and heating functions, and exhibits remarkable wearable performances.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Bai-Xue Li, Zhuo Luo, Wei-Guang Yang, Hao Sun, Yun Ding, Zhong-Zhen Yu, Dongzhi Yang
Summary: A trilayer composite material with thermal insulation, heat absorption, solar/electro-thermal conversions, and thermochromism has been fabricated for visible and infrared dual camouflages. This composite material can hide target signatures from infrared images and help the target evade visual surveillance through its green appearance.