Article
Materials Science, Multidisciplinary
Anouar El Magri, Khalil El Mabrouk, Sebastien Vaudreuil
Summary: The study focused on preparing and characterizing a PEEK/PEI blend for additive manufacturing using FFF. The miscibility of the polymers was confirmed, and optimal printing parameters were found to improve elastic modulus and crystallinity. Annealing the printed samples further enhanced mechanical properties.
JOURNAL OF MATERIALS SCIENCE
(2021)
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
Materials Science, Composites
Steven Lamoriniere, Mitchell P. Jones, Kingsley Ho, Gerhard Kalinka, Milo S. P. Shaffer, Alexander Bismarck
Summary: Embedding carbon fibers in CNT-PEEK powders can significantly improve the interfacial shear strength between the fiber and the matrix. The interfacial shear strength is negatively correlated with the fiber length, indicating brittle fracture at the fiber-matrix interface. The pulled out carbon fibers are still coated with the matrix, indicating strong adhesion at the interface.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Mia Carrola, Hamed Fallahi, Hilmar Koerner, Lisa M. Perez, Amir Asadi
Summary: Studying the behavior of polyetheretherketone (PEEK) in the presence of carbon nanotubes (CNTs) during fused filament fabrication (FFF) process can improve crystallization and mechanical properties. Understanding the morphology evolution allows formulating materials for additive manufacturing (AM) to achieve tailored properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Khadidja Taleb, Salima Saidi-Besbes, Isabelle Pillin, Yves Grohens
Summary: Biocomposites based on PBS and OMt were prepared by melt blending process. Gemini surfactant-modified organoclays showed a uniform dispersion and exfoliation in the PBS matrix, leading to improved properties. Adding a small amount of PBS/OMt significantly reduced the water vapor permeability, making it a promising material for food packaging applications.
Article
Engineering, Biomedical
Chao Zhang, Songlin Xu, Lei Zhang
Summary: This study investigated the mechanical properties of partially crystalline Poly-Ether-Ether-Ketone between the glass transition and the cold crystallization, observing three stiffening behaviors influenced by temperature-induced crystallization. The results show that the stiffening behaviors are connected to the onset of crystallization, providing a new tool to approach and distinguish extrinsic and intrinsic properties during characterization. This conclusion could promote future implementation for constitutive modeling and corresponding simulation replicating the influence of temperature-induced crystallization.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Polymer Science
Lorenzo Paleari, Mario Bragaglia, Francesco Fabbrocino, Raimondo Luciano, Francesca Nanni
Summary: In this study, PEEK carbon-nanotube (CNT) self-monitoring composites with different levels of filler loading were extruded as 3D-printable filaments. The resulting composites showed varying gauge factor values depending on the filler loading. 3D-printed PEEK 3CNT and PEEK 5CNT composites exhibited piezo-resistive behavior and had average gauge factors of 4.46 and 2.03, respectively.
Article
Materials Science, Multidisciplinary
L. S. De Bortoli, R. de Farias, D. Z. Mezalira, L. M. Schabbach, M. C. Fredel
Summary: In this study, functionalized carbon nanotubes (f-CNT) were used as additives in 3D-printed PLA/CNT nanocomposites to improve their thermal and mechanical properties. The functionalization of CNTs improved their dispersion in the PLA matrix and acted as effective nucleating agents for PLA crystallization, resulting in increased mechanical strength and better interfacial adhesion between printed layers. The addition of as little as 0.5 wt% of f-CNT significantly improved the mechanical properties and maintained the thermal stability of the nanocomposites.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Polymer Science
A. D. Drozdov, J. DeClaville Christiansen
Summary: Observations are reported on PEEK in uniaxial tensile tests, relaxation tests and creep tests at temperatures ranging from room temperature to 180 degrees C. Constitutive equations are developed for PEEK's thermo-mechanical behavior under uniaxial deformation, with adjustable parameters found by matching experimental data. Good agreement is shown between observations and results of numerical simulation, indicating similar activation energies for various responses at temperatures above the glass transition point.
Article
Materials Science, Composites
Zhihua Xiao, Guili Li, Chunxiao Liu, Haimei Li, Jun Lin
Summary: In this study, the use of carbon nanotubes (CNTs) to modify poly(lactic acid) (PLA)/poly(butylene-adipate-co-terephthalate) (PBAT) blends was investigated. The distribution of CNTs in the PBAT phase and its effects on the morphology and mechanical properties of the composites were characterized and discussed.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Zhiyuan Jiang, Qihui Chen, Zewen Zhu, Chia-Ying Tsai, Mingzhen Zhao, Hung-Jue Sue, Andy Chang, Tim Bremner, Lorenzo P. DiSano
Summary: A simple solution mixing approach was used to prepare PEEK nanocomposites reinforced with well-dispersed MWCNTs, which did not affect the thermal stability of PEEK but increased Young's modulus and decreased coefficient of thermal expansion, making it suitable for various high-temperature applications.
POLYMER INTERNATIONAL
(2021)
Article
Materials Science, Characterization & Testing
Fei Yu, Linghan Xiao
Summary: The addition of poly(ether sulfone) modified graphene reduced the crystallinity of PEEK composites and shortened the total crystallization time. With increasing the mass ratio of PES to GE, the peak temperature and nucleation activity of f-GE(i) increased before declining.
Article
Materials Science, Composites
Elham Rashidi, Hamidreza Rezaie, Hossein Ghassai
Summary: This study investigates the influence of functionalized multi-walled carbon nanotube dispersion on the mechanical properties of PEEK-HAP-CNTs nanocomposites for biomedical applications. The addition of CNTs increased the effective contact area between components, resulting in improved elastic modulus and compressive strength. Furthermore, the inclusion of CNTs enhanced cell functions in the composite.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Composites
Juan Li, Bo Li, Shaowen Huang, Shanshan Luo, Shengbao He, Chengtao Gao, Shan Liu
Summary: The surface-grafting modification of nano clay, specifically using epoxy chain extender ADR-4468 to modify pyrophyllite, has yielded ADR-4468-modified pyrophyllite (A-Prl) which has shown to improve the properties of PET and PET/PETG composites. The A-Prl successfully synthesized in this study did not alter the crystal structure of pyrophyllite. Its addition improved the dispersion and crystallization properties of the composites, ultimately enhancing the mechanical performance. The impact toughness of the A-Prl/PET/PETG composite increased by 120% compared to pure PET. This functional additive has the potential to be utilized in the production of high-performance and recyclable PET composites.
POLYMER COMPOSITES
(2022)
Article
Engineering, Environmental
Kun Wang, Kangjing Zhang, Zhiguo Jiang, Zhaobin Qiu
Summary: Biobased poly(1,3-propylene 2,5-furandicarboxylate) (PPF) and carbon nanotubes (CNTs) nanocomposites were successfully prepared at low CNTs loadings, showing good dispersion, improved thermal stability, dynamic mechanical properties, and crystallization behavior.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Materials Science, Composites
Gui Yang, Xiaodong Zhang, Ying Shang, Penghui Xu, Duo Pan, Fengmei Su, Youxin Ji, Yuezhan Feng, Yongzhi Liu, Chuntai Liu
Summary: In this study, high in-plane thermal conductivity of PVA/BNNSs nanocomposites was achieved through appropriate processing and distribution of BNNSs. The research results demonstrate that continuous heat conduction pathways can be established by processing BNNSs appropriately and distributing them accordingly.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Characterization & Testing
Pan Wang, Qing Lin, Yaming Wang, Chuntai Liu, Changyu Shen
Summary: The study systematically investigated the crystallization behavior and morphologies of carbon and glass fiber reinforced PEEK. It was found that carbon fiber filled PEEK had better crystallization ability than neat PEEK, while glass fiber filled PEEK showed the opposite trend. The incorporation of carbon or glass fiber led to looser packing of the unit cell and decreased crystal perfection of PEEK, but did not change its crystal form or long period of lamellae.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Engineering, Multidisciplinary
Wei Zhai, Xinyu Li, Quanjun Xia, Pengfei Zhan, Jianwei Xu, Guoqiang Zheng, Kun Dai, Zhicheng Zhang, Chuntai Liu, Changyu Shen
Summary: This study investigated a high-performance flexible and wearable strain sensor, which has the potential for wide applications in health monitoring and disease diagnostics.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Bing Zhou, Zhaoyang Li, Yanli Li, Xianhu Liu, Jianmin Ma, Yuezhan Feng, Dianbo Zhang, Chengen He, Chuntai Liu, Changyu Shen
Summary: This study developed a multifunctional transparent shielding film using MXene material, which exhibits excellent shielding effectiveness and joule heating performance, along with self-cleaning and oxidation resistance. The film can maintain its performance steadily in outdoor conditions for over 100 days.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Daozheng Yang, Bing Zhou, Gaojie Han, Yuezhan Feng, Jianmin Ma, Jian Han, Chuntai Liu, Changyu Shen
Summary: Flexible transparent heaters based on photothermal energy conversion are in high demand for next-generation electronic devices, but balancing photothermal efficiency and transparency remains a challenge. A flexible polycarbonate film with balanced photothermal energy conversion performance and transparency was demonstrated in this work, achieved by spraying PPy-modified Ti3C2Tx MXene. The resulting transparent film heater (MP-PC) showed satisfactory photo-thermal conversion performance and effective transmittance, making it suitable for applications such as light-triggered thermal therapy for human skin in cold environments.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Multidisciplinary
Duo Pan, Qianming Li, Wei Zhang, Jingwen Dong, Fengmei Su, Vignesh Murugadoss, Yongzhi Liu, Chuntai Liu, Nithesh Naik, Zhanhu Guo
Summary: This study successfully enhanced the thermal transfer properties of composites by preparing a unique three-dimensional thermally conductive network and incorporating carbonized M-BN/TPU skeletons, leading to the fabrication of highly thermally conductive epoxy composites.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Yuxin He, Qiuyu Chen, Dongyang Wu, Mengyang Zhou, Tengfei Wang, Chang Lu, Li Zhang, Hu Liu, Chuntai Liu
Summary: Polyvinyl alcohol-graphene oxide-oxidized carbon nanotube hybrid coatings were used to modify glass fibers and carbon fibers, resulting in modified hybrid composites with different concentric structures. The hybrid structure optimized the mechanical properties of the composites by combining the advantages of the two types of fiber reinforcement, with interface strength playing a crucial role. Mechanical properties were significantly enhanced after modification, and interlaminar shear strength was improved with hybrid coating.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Yafei Wang, Luyang Liang, Ziran Du, Yaming Wang, Chuntai Liu, Changyu Shen
Summary: This study successfully prepared biodegradable PLA/CNTs/Ti3C2Tx MXene nanocomposites with excellent electromagnetic interference (EMI) shielding properties, capable of shielding nearly 99.989% of electromagnetic waves. By increasing the thickness of the film, the shielding efficiency can be further improved.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Thermodynamics
Qian Zhao, Bowen Wang, Chenyuan Qin, Qiuxuan Li, Chuntai Liu, Changyu Shen, Yaming Wang
Summary: The study showed that the presence of MXene in nonisothermal melt crystallization increases crystallinity and shortens half-crystallization time, but does not change the crystallization peak temperature of PLA. In nonisothermal crystallization from the glassy state, the incorporation of MXene decreases the cold crystallization peak temperature and reduces crystallinity marginally, without affecting the half-crystallization time of PLA.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Nanoscience & Nanotechnology
Yafei Wang, Pan Wang, Ziran Du, Chuntai Liu, Changyu Shen, Yaming Wang
Summary: This article investigates the fabrication of conductive polymer composites with segregated networks using a simple strategy based on the addition of PEO. The effects of CNTs and GNPs on the electrical conductivity and EMI shielding properties of different structures were compared, showing higher effectiveness in segregated structure.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Juzhong Zhang, Dandan Sun, Bin Zhang, Qingqing Sun, Yang Zhang, Shuiren Liu, Yaming Wang, Chuntai Liu, Jinzhou Chen, Jingbo Chen, Yanlin Song, Xuying Liu
Summary: This study proposes a simple strategy to prepare a photoresponsive elastomer by grafting carbon nanotubes onto a thermally-sensitive liquid-crystalline elastomer network, enhancing its mechanical and photothermal properties. The elastomer with ultralow loading of carbon nanotubes exhibits stable response and increased tensile strength. This design strategy can be used to manufacture high-precision, remote-control smart devices.
MATERIALS HORIZONS
(2022)
Article
Nanoscience & Nanotechnology
Ziran Du, Gaoyan Zhang, Kun Chen, Cheng Zhou, Xiaoshuai Zhu, Yuxiang Zhang, Kang Chen, Hao-Yang Mi, Yaming Wang, Chuntai Liu, Changyu Shen
Summary: This study developed a double-layered MXene/Polylactic acid fabric resonance cavity structure, which not only improved the EMI shielding effect but also converted mechanical energy into electricity like a triboelectric nanogenerator. This provides new insights into designing high-performance EMI shielding shields and integrating them with energy harvesting capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Qiuxuan Li, Ruyan Xu, Kun Chen, Mengfan Jing, Chuntai Liu, Changyu Shen, Yaming Wang
Summary: This study prepared nanocomposites by melt-mixing PEG and BNNS with PLA, finding varying effects on PLA crystallization under different conditions, while also evaluating the performance of the nanocomposites.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Polymer Science
Yuping Zhao, Kun Chen, Cheng Zhou, Yaming Wang, Chuntai Liu, Changyu Shen
Summary: The use of antibacterial biodegradable polymers is crucial in medical applications. In this study, antibacterial bionanocomposites based on poly(butylenes adipate-co-terephthalate)/poly(lactic acid) blend were prepared using organically modified montmorillonite (MMT) and graphene nanoplatelets (GNP) as enhancers. The antibacterial properties were improved by both MMT and GNP, and the release of ciprofloxacin hydrochloride (CFX center dot HCl) from the bionanocomposites was regulated. The morphology of the bionanocomposites was analyzed, and evidence of exfoliation was observed. Contact angle and water uptake studies showed hydrophilic performance and higher water uptake. The modified polymer blends have great potential in tuning antibacterial properties for specific biomedical applications.
Article
Polymer Science
Mengfan Jing, Xuyang Liu, Like Ma, Fukang Cao, Zihao Wang, Yaming Wang, Chuntai Liu, Changyu Shen
Summary: The effect of fiber surface topography on polymer interfacial crystallization behavior was investigated using polarized optical microscopy. It was found that different surface topographies of fibers lead to different nucleation processes of poly(lactide). The introduction of SiO2 particles increased the nucleation rate and influenced the relationship between Δσ and ln I-0.