Article
Polymer Science
Zhihua Li, Ziteng Guo, Yu Yang
Summary: In this study, a cyanate ester-based shape memory composite (SMPC) was fabricated using a simple sol-gel method, in which multi-walled carbon nanotubes coated with silica (MWCNT@SiO2) were introduced to improve moisture resistance. The addition of MWCNT@SiO2 enhanced the mechanical strength and toughness of SMPC, with the best performance achieved using 0.9 wt% loading. The storage modulus of SMPC increased and the glass transition temperatures decreased with the incorporation of MWCNT@SiO2, while the shape memory performance remained good.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Nicoleta-Violeta Stanciu, Felicia Stan, Ionut-Laurentiu Sandu, Catalin Fetecau, Adriana-Madalina Turcanu
Summary: This paper investigated the material properties of polypropylene (PP) nanocomposites filled with multi-walled carbon nanotubes (MWCNTs) and found that the addition of MWCNTs affects the melt shear viscosity, specific volume, thermal conductivity, mechanical properties, and electrical properties of the materials. The study revealed that increasing MWCNT loading results in higher melt shear viscosity, lower specific volume, thermal conductivity below 0.35 W/m·K, and the nanocomposite becomes electrically conductive at 3 wt.% loading.
Article
Chemistry, Physical
Enxiang Jiao, Ziru Sun, Hangzhen Zhang, Yifei Wu, Yuanbiao Liu, Kai Guo, Haijun Zhang
Summary: The development of thermal interface materials (TIMs) with excellent mechanical properties and efficient heat dissipation capability has become necessary for the next generation of integrated electronics and flexible devices. In this study, a covalently cross-linked cellulose nanofiber/MXene/single-walled carbon nanotube (CNF/MXene/SWCNT-KH550, K-CMC) nanocomposite film was successfully fabricated. This unique cross-linked ternary nanocomposite film greatly promoted load transfer and energy dissipation between components, thereby improving its mechanical properties.
APPLIED SURFACE SCIENCE
(2023)
Article
Thermodynamics
JinHyeok Cha, Kei Hasegawa, Jeonyoon Lee, Itai Y. Stein, Asuka Miura, Suguru Noda, Junichiro Shiomi, Shohei Chiashi, Brian L. Wardle, Shigeo Maruyama
Summary: The study demonstrates that thermal diffusivity and conductivity of SWCNT forests increase when the volume fraction exceeds 17%, indicating that some SWCNTs not serving as thermal paths at lower volume fractions start connecting with others. Moreover, the inferred thermal conductivity of individual SWCNTs also enhances with the increase of volume fraction.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Materials Science, Composites
Sahil Kapoor, Meenakshi Goyal, Prashant Jindal
Summary: Nanocomposites of ABS/MWCNTs with improved thermal and mechanical properties were fabricated and characterized in terms of morphology, thermal degradation stability, thermal expansion, and mechanical properties. The nanocomposites showed uniform dispersion of MWCNTs, enhanced thermal stability, reduced thermal strain and coefficient of thermal expansion, and improved elastic modulus and hardness. These improved properties enable the wide applications of ABS/MWCNTs nanocomposites in various engineering fields, especially in the automobile industry.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Materials Science, Composites
Subhransu S. Pradhan, Lakshmi Unnikrishnan, Smita Mohanty, Sanjay K. Nayak
Summary: This study prepared polycarbonate nanocomposites using graphite flake and multi-walled carbon nanotube fillers at varying weight percentages by melt mixing technique. The nanocomposites showed significant improvements in thermal conductivity and EMI shielding performance, with optimized electrical conductivity achieved at specific loading percentages. The morphology of the composites confirmed the dispersion of fillers in the PC matrix, making them suitable for various commercial applications.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Composites
Xiaodan Li, Wei Huang, Yan Sui, Guanhui Wang, Lin Xiao, Dongxing Zhang
Summary: By adding different amounts of MA0735 into novolac cyanate ester resin, novolac cyanate ester-polyhedral oligomeric silsesquioxane (POSS, MA0735) copolymers were prepared and analyzed for their curing behaviors and properties. The polymer with 0.5% MA0735 showed optimal comprehensive properties, combining heat resistance and impact toughness.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Composites
Thulasidhas Dhilipkumar, Murugan Rajesh
Summary: The current study investigates the combined effect of carbon nanotube reinforcement and manufacturing methods on the mechanical and vibrational behavior of composite materials. The results demonstrate that the co-curing manufacturing method with 1% weight fraction of CNTs improves the tensile strength, while the secondary bonding method with 0.25% weight fraction of CNTs provides the highest flexural strength. Modal analysis reveals that the selection of appropriate manufacturing techniques and CNT weight fractions can enhance both the mechanical properties and vibrational characteristics of the composites.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Peijun Xu, Fan Wu, Lei Han, Zhao Li, Xinliang Guo, Ronghai Liu, Xiaoming Chen, Jie Zhang
Summary: This article studies the modification of cyanate ester (CE) resin with high-performance thermoplastic engineering plastic polyether sulfone (PES) to obtain a modified resin with excellent toughness. The addition of PES greatly improves the mechanical and thermal properties of the modified resin.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Imrana I. Kabir, Yifeng Fu, Nicolas de Souza, Muhammad Tariq Nazir, Juan Carlos Baena, Anthony Chun Yin Yuen, Guan Heng Yeoh
Summary: The flame-retardant properties of polydimethylsiloxane (PDMS)/oxidised multi-walled carbon nanotubes (MWCNT-COOH) nanocomposite films dispersed with a nonionic acrylate copolymer surfactant were superior compared to materials containing only surfactant or MWCNT-COOH. The newly developed nanocomposites, designated as PDMS/surfactant/MWCNT-COOH (PSM), exhibited reduced peak heat release rate, peak smoke production rate, total smoke release rate, carbon monoxide, and carbon dioxide production compared to PDMS. PSM also showed an increased Limiting Oxygen Index (LOI) value, suggesting improved flame-retardant capabilities.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Qian Liu, Zhenyu Wang, En-Hou Han
Summary: In this study, cyanate ester was used to modify epoxy resin, and the thermal, mechanical, and corrosion properties of the modified material were systematically studied. The results showed that an appropriate amount of cyanate ester significantly improved the comprehensive performance of the epoxy resin.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2022)
Article
Polymer Science
Muhamad Hasfanizam Mat Yazik, Mohamed Thariq Hameed Sultan, Mohammad Jawaid, Abd Rahim Abu Talib, Norkhairunnisa Mazlan, Ain Umaira Md Shah, Syafiqah Nur Azrie Safri
Summary: The study evaluated the effect of hybridization of montmorillonite and multi-walled carbon nanotubes on the thermal and viscoelastic properties of shape memory epoxy polymer nanocomposites. The 3% MMT/1% MWCNT combination exhibited the best overall performance and better mechanical properties compared to neat SMEP, offering a new way to develop high-performance composites for various potential applications.
Article
Polymer Science
Zhicheng Wang, Runjie Li, Qirui Qin, Mohamadou Al Hassan, Abdul Qadeer Dayo, Wenbin Liu, Jun Wang
Summary: The study found that blending a small amount of HB-PED230 can effectively reduce the curing temperature of CE resin, while improving the bending strength and impact strength. Additionally, it was observed that as the amount of HB-PED230 increased, the flexural strength and flexural modulus of the copolymers were improved.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Chemistry, Applied
Xiaodan Li, Xiaoqing Liu, Hongyu Liu, Rui He, Feng Wang, Shiyun Meng, Zhaomin Li
Summary: Epoxy-based silsesquioxane (EOVS) was oxidized from octavinyl silsesquioxane (OVS) and used to prepare E51/BADCy/EOVS nanocomposites with epoxy resin and cyanate ester. The addition of EOVS resulted in a lower dielectric constant due to increased free volume. The nanocavities introduced by POSS were confirmed to increase the free volume, and the crosslinking density was determined to understand the spatial structure of the nanocomposites. The E51/BADCy/EOVS nanocomposites exhibited a surprising decrease in dielectric constant and dielectric loss, making them promising candidates for the microelectronics industry.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Analytical
Liang Tian, Mengyuan Jiang, Mengjie Su, Xiaoqing Cao, Qiyu Jiang, Quan Liu, Chunmei Yu
Summary: A highly selective and sensitive cortisol immunosensor based on MXene-MWCNTs hybrid composite was developed for non-invasive monitoring of human sweat cortisol levels. The immunosensor exhibited a low detection limit and a wide linear range, covering the normal range of free cortisol in sweat. The results were validated by a commercial CLIA assay, suggesting its potential for hormone screenings in healthy monitoring and medical diagnosis.
MICROCHEMICAL JOURNAL
(2023)
