Article
Materials Science, Multidisciplinary
Asia Matatyaho Ya'akobi, Cedric J. S. Ginestra, Lyndsey R. Scammell, Michael W. Smith, Matteo Pasquali, Yeshayahu Talmon
Summary: This study investigates boron nitride nanotubes (BNNTs) synthesized by the high temperature-pressure (HTP) method and compares their properties after different purification processes using advanced electron microscopy techniques. The results show that BNNTs of higher purity form small, ordered domains at lower concentrations and defects do not prevent their nematic alignment. Cryogenic electron microscopy provides direct-imaging evidence of the BNNT liquid crystalline phase, suggesting the potential for the fabrication of highly ordered BNNT-based macroscopic assemblies through liquid-phase processing.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Ling Li, Ningqiang Shi, Xiangqian Jiang, Weiping Chen, Chuncheng Ban, Jiandong Hao
Summary: This study focuses on the synthesis of high-quality bismuth telluride (Bi2Te3) nanowires and boron nitride nanotubes (BNNTs), as well as the preparation of Bi2Te3-BNNTs and Bi2Te3-BCNNTs composite films. The obtained composite films exhibit high electrical conductivity, good flexibility, and thermal stability. They show great potential for application in thermoelectric conversion.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Minhyeok Lee, Unseok Jung, Jong-Il Kim, Hyeondeok Jeong, Jaewoo Kim, Se Youn Moon, Se Gyu Jang, Sung-Soo Ryu, Seong Yun Kim, Hunsu Lee
Summary: Ultrahigh-temperature ceramics (UHTCs) are highly hard and resistant to oxidative ablation, suitable for hypersonic environments. However, their low fracture toughness limits their use. In this study, zirconium diboride was sintered with high aspect ratio boron nitride nanotubes (BNNTs) to improve fracture toughness. Plasma functionalization effectively disperses the BNNTs in UHTC, increasing the fracture toughness of the UHTC composite.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Composites
Jianzheng Cui, Fanlin Zeng, Bin Yuan
Summary: The reinforcing effect of carbon nanotubes (CNTs) and boron nitride nanotubes (BNNTs) on the interfacial characteristics and tensile behaviors of natural rubber (NR) composites were investigated using molecular dynamics simulations. Results showed that the incorporation of BNNTs achieved higher improvements in interfacial frictional force and shear strength compared to CNTs. Additionally, both CNTs and BNNTs significantly increased the mechanical properties of the NR composites.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Physical
Ying Wang, Kai Zhang, Liyun Wu, Xuhua He, Qian He, Nanyang Wang, Zhengyang Zhou, Chaowei Li, Yue Hu, Yagang Yao
Summary: This study presents an efficient method for growing high-quality boron nitride nanotubes (BNNTs) using low-melting-point precursors, namely magnesium diboride (MgB2), magnesium nitride (Mg3N2), and diboron trioxide (B2O), through chemical vapor deposition at temperatures of 1000-1300 degrees C. The addition of Mg3N2 prevents the formation of high-melting-point Mg3B2O6, allowing MgB2 to maintain its catalytic capacity and improve the growth efficiency of BNNTs. Furthermore, BNNTs-based PDMS composites exhibit enhanced thermal conductivity compared to pure PDMS, suggesting their potential in thermal interface materials applications.
Article
Chemistry, Multidisciplinary
Qingwei Yan, Jingyao Gao, Ding Chen, Peidi Tao, Lu Chen, Junfeng Ying, Xue Tan, Le Lv, Wen Dai, Fakhr E. Alam, Jinhong Yu, Yuezhong Wang, He Li, Chen Xue, Kazuhito Nishimura, Sudong Wu, Nan Jiang, Cheng-Te Lin
Summary: The mesoplasma chemical vapor deposition (CVD) technology was used to synthesize vertically aligned graphene nanowalls (GNWs) and achieve high thermal conductivity polymer composites with low filler loadings.
Article
Materials Science, Multidisciplinary
Nasim Anjum, Ohood Q. Alsmairat, Zihan Liu, Cheol Park, Catharine C. Fay, Changhong Ke
Summary: This study characterizes the local load transfer on the BNNT-PMMA interface inside nanocomposite microfibers through in situ Raman micromechanical measurements. The findings show that BNNT-reinforced PMMA microfibers have high interfacial shear strengths, resulting in significant enhancements in the composite's Young's modulus and tensile strength.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Materials Science, Ceramics
Jae-Il Kim, Jongkuk Kim, Do Hyun Kim, Young-Jun Jang, Noritsugu Umehara
Summary: The study successfully reduced the wear of both the tetrahedral amorphous carbon film and its counterpart by fabricating a multilayered nanocrystalline composite film, thus enhancing the durability of the tribosystem.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ying Zhang, Shuang Liu, Zhen Yao, Jiajun Dong, Bo Liu, Ran Liu, Mingrun Du, Peng Wang, Quanjun Li, Thomas Wagberg, Hamid Reza Barzegar, Alex Zettl, Mingguang Yao, Bingbing Liu
Summary: In this study, it was found that compressed boron nitride nanotubes and boron nitride peapods could transform into a new carbon/boron nitride hybrid structure, which provides a possibility for synthesizing new sp3 hybridized carbon/boron nitride structures.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Ceramics
Monika Tatarkova, Peter Tatarko, Alexandra Kovalcikova, Ivo Dlouhy, Jan Dusza, Pavol Sajgalik
Summary: The addition of h-BN nanosheets during spark plasma sintering process improved the fracture toughness and strength of Si3N4, while slowing down the alpha -> beta phase transformation. Proper control of the particle size and content of h-BN nanosheets can effectively enhance the mechanical properties of Si3N4.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Nafiu Suleiman, Abu Yaya, Michael D. Wilson, Solomon Aryee, Samuel K. Kwofie
Summary: This study investigates the application of BNNTs and CNTs as inhibitors of mycolactone. The findings suggest that CNTs have better adsorption capability and can be potentially excellent inhibitors of mycolactone toxins in biological systems.
Article
Materials Science, Ceramics
Celia S. Chari, Bryan W. McEnerney, Richard R. Hofer, James A. Wollmershauser, Edward P. Gorzkowski, Katherine T. Faber
Summary: By carbothermal reduction of B2O3 in nitrogen, the surface of graphite can be converted to h-BN, creating a bimaterial system with insulating surface and conductive substrate. The synthesis of this layered material at high temperature and the interface between graphite and h-BN are studied to understand the chemical and mechanical adhesion of the layers. The results show that the thickest h-BN layers with the highest fracture toughness are achieved at a reaction temperature of 1700 degrees C for 18 hours.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Composites
Hong Ma, M. Ali Aravand, Brian G. Falzon
Summary: This study developed multiphase epoxy-based nanocomposite blends with enhanced fracture toughness and controlled microstructure, utilizing nanoscale and microscale inclusions for dissipating crack energy. By investigating the interactions between nano- and microscale toughness modifiers, a synergistic enhancement in fracture toughness was achieved.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Shenwei Xu, Huiling Pi, Pengfei Wu, Xiaozhong Huang, Yuan Shi, Longbiao Li, Haitang Yang
Summary: This paper investigates the effect of in situ grown boron nitride nanotubes and preparation temperature on the mechanical behavior of SiCf/SiC minicomposites, showing that the addition of BNNTs reduces the elastic modulus, tensile strength, and fracture strain of the composites. The study also includes predictive modeling and observation of microstructures to provide guidance for service life prediction and aerospace applications.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Ali Gharieh, Mir Saeed Seyed Dorraji
Summary: The study focused on using core-shell impact modifier particles and multiwalled carbon nanotubes as reinforcing agents to enhance the toughness and tensile properties of epoxy resin. Experimental results indicated that the combination of the prepared CSIMPs and MWCNTs could significantly improve the physicomechanical properties of the epoxy resin.
SCIENTIFIC REPORTS
(2021)