Article
Polymer Science
Kohei Takahashi, Kazuki Nagura, Masumi Takamura, Teruya Goto, Tatsuhiro Takahashi
Summary: This study developed an electrically conductive thermosetting resin composite that can transition from liquid to solid state without solvents by adjusting temperature. It has applications as a matrix for carbon fiber reinforced plastics and achieves high electrical conductivity through particle size reduction and temperature optimization.
Article
Materials Science, Multidisciplinary
Siavash Sarrafan, Xiaming Feng, Guoqiang Li
Summary: Novel syntactic foams with shape memory effect were prepared by incorporating glass microbubbles into a crosslinked polymer matrix. These foams exhibited remarkable strain actuation and had superior actuation capability compared to pure polymers. With a low density and decent mechanical properties, they are potential candidates for various applications including artificial muscles and biomedical devices.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Long Chen, Chengchao Liu, Shucheng Liu, Yuanzhi Chang, Yunxiao Liu, Jianming Zhang, Qing Yu, Guiqing Cheng, Zhongwei Wang
Summary: In this study, a conductive polymer composite with excellent positive temperature coefficient (PTC) reproducibility was prepared by introducing cellulose nanocrystals (CNCs) grafted with methyl methacrylate (CNC-g-PMMA). The introduction of CNC-g-PMMA increased the PVDF/HDPE viscosity ratio, resulting in a finer morphology of the conductive carbon black (CB)/HDPE phase and achieving stable PTC performance.
POLYMER COMPOSITES
(2023)
Article
Construction & Building Technology
Maksymilian Frac, Wojciech Szudek, Paulina Szoldra, Waldemar Pichor
Summary: The research results indicate that shungite is a promising conductive additive for cement composites. Introduction of at least 16% of shungite allows obtaining composites with electrical properties, enabling their application in stress/damage or temperature monitoring. Cement composites with shungite also exhibit piezoresistive and thermoelectric effects.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Jong-Ho Back, Chiwon Hwang, Dooyoung Baek, Dongwoo Kim, Youngchang Yu, Wonjoo Lee, Hyun-Joong Kim
Summary: This study investigates epoxy composites with tunable mechanical properties, including toughened polymers, elastomers, and pressure-sensitive adhesives, by adjusting the ratio of different types of epoxy resins. The results show that these epoxy composites can be used in structural adhesives and flexible electronics, exhibiting performance comparable to traditional tapes.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Manufacturing
Molly Hall, Xuesen Zeng, Tristan Shelley, Peter Schubel
Summary: This study systematically evaluates five dielectric parameters and proves that they can be used interchangeably and, in some cases, provide complementary information. The proposed techniques have improved accuracy and repeatability compared to existing analysis techniques.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Lorena Saitta, Vishnu Prasad, Claudio Tosto, Neal Murphy, Alojz Ivankovic, Gianluca Cicala, Gennaro Scarselli
Summary: The study focuses on composite fabrication, characterization, and recyclability of biobased polymer resins reinforced with flax fiber. By selecting different biobased resins and evaluating their mechanical properties, an epoxy resin cured with a cleavable hardener is found to have the highest glass transition temperature, ensuring full recyclability. The study also demonstrates the possibility of separating and recovering fibers and resin from composite panels through a specific chemical process.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Textiles
Damiro Ahn, Hyun-Jung Choi, Sang Young Yeo, Hodong Kim
Summary: The surface modification of CNTs with 4-aminobenzoyl functionalized CNTs (ABCNT) and benzoxazine functionalized CNTs (BZCNT) showed enhanced interaction with bisphenol A based benzoxazine resins, leading to better conductivity and thermal properties in polybenzoxazine composites. The chemical bond between BZCNT/BA-a during the curing process was found to be responsible for the improved properties compared to the ABCNT/BA-a composite.
FIBERS AND POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Liberata Guadagno, Marialuigia Raimondo, Carlo Naddeo, Luigi Vertuccio, Salvatore Russo, Generoso Iannuzzo, Elisa Calabrese
Summary: This study proposes the design of toughened self-healing supramolecular resins with thermal stability up to 360 degrees C. The addition of healing agents and electrically conductive carbon nanotubes significantly enhances the self-repair efficiency and glass transition temperature of the materials.
Article
Polymer Science
Cuifen Zhang, Shiqiang Song, Mei Liu, Jincheng Wang, Zijin Liu, Shuhua Zhang, Weizhen Li, Yong Zhang
Summary: In this study, a highly elastic sensor was fabricated using silicone rubber based on conductive polymer composites containing carbon nanotubes and reduced graphene oxide. The sensor's performance was significantly influenced by the porosity and filler conductive networks. The sensor exhibited high conductivity, strain sensitivity, pressure sensitivity, linearity, response time, and repeatability, making it suitable for detecting physiological activities, human body movements, pressure distribution, and temperature identification.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Zhengzhu Zhu, Xian He, Jiangbo Lv, Hang Xiao, Yu Pu, Jinlang Hong, Ke Zeng, Jianghuai Hu, Gang Yang
Summary: In this study, a new high-performance aromatic nitrile-based resin monomer was designed and its suitability for lamination process was confirmed through rheological analysis. The cured resin and CFRP exhibited excellent thermal and mechanical properties. This work provides important guidance for green processing and preparation of high-performance resins with desirable thermal and mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Review
Engineering, Manufacturing
Tejas Pramod Naik, Inderdeep Singh, Apurbba Kumar Sharma
Summary: The search for novel energy-efficient, eco-friendly, and time-saving manufacturing techniques is gaining momentum recently. Polymer composites have been increasingly used in various industrial applications, but their efficient processing remains challenging. This article provides an overview of the basics of microwave heating and the physics behind the microwave processing of polymer composites, reviews the state-of-the-art on microwave processing of thermoset and thermoplastic-based composites, and highlights the challenges and constraints in adopting microwave technology for curing composites at an industrial scale. The article also indicates the future scope of work involving microwave scanning route for 3D printing of polymer matrix composite parts.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Esteban Araya-Hermosilla, Alice Giannetti, Guilherme Macedo R. Lima, Felipe Orozco, Francesco Picchioni, Virgilio Mattoli, Ranjita K. Bose, Andrea Pucci
Summary: This material demonstrates a reversible temperature-triggered self-healing mechanism using furanic pendant moiety and bismaleimide with Diels-Alder reaction, along with a reversible electrically conductive polymer network achieved by adding reduced graphene oxide. Additionally, the electrical conductivity is activated at temperatures higher than 100 degrees C, showing potential applications as electronic switches in self-healing soft devices.
Article
Engineering, Manufacturing
Yuejia Li, Fenghua Zhang, Yanju Liu, Jinsong Leng
Summary: Functional polymer materials with a two-way shape memory effect have become a significant research focus. We synthesized shape memory polymers with adjustable transition temperatures and a triple-shape memory effect through the introduction of TDI into the BMI network. By using ETBN for toughening and carbon fabric for reinforcement, we developed composites with excellent properties. The two-way behavior is achieved by fixing pre-deformed shapes at temperatures above and below Tg. These BMI-based SMPs show promising thermal stability and mechanical properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Electrical & Electronic
Furkan Murat Yildirim, Volkan Ugraskan, Ozlem Yazici
Summary: This study examined the thermoelectric properties of boron phosphide-filled polyaniline composites. The results showed that the electrical conductivity of the composites increased significantly with the addition of 7% boron phosphide. Additionally, all the composites had negative Seebeck coefficients, indicating that they were n-type conductors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Applied
Xiaodan Wu, Zihan Wang, Guansong Shao, Bingyang Qin, Ying Wang, Tao Wang, Zhiguo Liu, Yujie Fu
Summary: In this study, a new type of cellulose-based ionic imprinting adsorbent was developed for the selective removal of cobalt ions. The adsorbent exhibited excellent adsorption performance, high cycling stability, and preferential selectivity for cobalt ions. The simple preparation method and promising application prospects make it a promising candidate for water treatment.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Chandirasekar Shanmugam, Vanitha Marimuthu, Nagappan Rajendiran
Summary: In this study, monodispersed gold and silver nanoparticles were synthesized using cholic acid functionalized star poly(DL-lactide) as a capping and reducing agent. The synthesized materials were found to be effective heterogeneous catalysts for the reduction reaction.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Bianca-Iulia Ciubotaru, Mirela-Fernanda Zaltariov, Mihaela Dascalu, Adrian Bele, Alexandra Bargan, Maria Cazacu
Summary: Porous networks were obtained using polysiloxanes pendant functionalized with aminopropyl groups. The addition of certain substances, such as ammonium bicarbonate and acetic acid, promoted the porosity and covalent cross-linking of the polymer. The resulting materials exhibited high dielectric permittivity and significant electrical output signal when subjected to compression, making them suitable for capacitive pressure sensors.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Mohamed A. Zein, Basim H. Asghar, Abdulaziz M. Almohyawi, Norah F. Alqahtani, Ahmed Alharbi, J. Alkabli, Reda F. M. Elshaarawy, Lamia A. Ismail
Summary: In this study, new amphiphilic chitosan-thyme extract-nanosilver nanocomposites were prepared, which synergistically inhibited bacterial biofilm formation and bacterial proliferation. The nanocomposites disrupted bacterial cell membranes, causing cell death, and prevented biofilm formation. In addition, the nanocomposites exhibited good biocompatibility, making them potential candidates for biomedical applications.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Review
Chemistry, Applied
Norah F. Alqahtani
Summary: This review explores the potential of Imidazolium-based ionic liquids (ImILs) in improving the solubility, stability, and functionality of chitosan, and provides an overview of the types and preparation methods of functionalized imidazolium ionic liquids (FImILs). Additionally, it discusses the various opportunities offered by FImIL-chitosan derivatives.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Olesya N. Zabegaeva, Alexey F. Kosolapov, Sergei L. Semjonov, Mariam G. Ezernitskaya, Egor S. Afanasyev, Ivan A. Godovikov, Alexander Chuchalov, Dmitriy A. Sapozhnikov
Summary: Polyimides are commonly used as primary protective coatings for optical fibers in high-temperature applications. However, the manufacturing process is complicated due to certain drawbacks. This study shows the potential use of polyamide-imides as highly reliable protective coatings for optical fibers.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Luis Miguel Nunez Tapia, Pascal Thebault, Laurent Bischoff, Alain Ledoux, Florian Defontaine, Olivier Lesouhaitier, Fabrice Burel
Summary: A water soluble cationic bis-cyclocarbonate was prepared through a three steps procedure, and non-isocyanate polyurethanes were prepared in acetonitrile with high yields. The resulting materials exhibited good thermal properties and hydrophilic properties. The polyurethane thermoset showed high inhibition towards bacteria, and the bis-cyclocarbonate oligomer was found to be harmless to organisms.
REACTIVE & FUNCTIONAL POLYMERS
(2024)