Article
Chemistry, Applied
Marija Pergal, Jelena Brkljacic, Gordana Tovilovic-Kovacevic, Milena Spirkova, Igor D. Kodranov, Dragan D. Manojlovic, Sanja Ostojic, Nikola Z. Knezevic
Summary: Novel polyurethane nanocomposite materials containing surface-functionalized mesoporous silica nanoparticles were prepared, showing favorable physico-chemical and biological characteristics for potential applications as coatings for medical devices and implants.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Engineering, Chemical
Jun Lai, Feng Huang, An Huang, Tong Liu, Xiangfang Peng, Jianming Wu, Lihong Geng
Summary: Long carbon chain thermoplastic polyamide elastomer (TPAE) with PA1212 as hard segment and polytetrahydrofuran as soft segment was successfully synthesized. Thermoplastic polyurethane (TPU) and a chain extender (ADR) were incorporated to improve the foaming performance and interfacial compatibility. The TPAE/TPU composite foams showed improved cell structure, density, and expansion ratio with the addition of ADR. The optimal cell size of 25.81 μm was obtained with 2% ADR content, leading to outstanding compressive modulus and resilient performance for applications in the footwear industry.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Monika Bil
Summary: The continuous progress in medicine and biotechnology requires the development of novel biomaterials with multiple functions. By combining synthetic polymers and natural polymers, such as PU-2/3 PCL and CH-m composites, better performance in terms of shape memory properties and transition temperature can be achieved, even though a certain preheating time is needed.
Article
Chemistry, Applied
Tzu-Yi Yu, Yu-Kai Tseng, Ting-Han Lin, Yun-Hsiu Tseng, Yin-Hsuan Chang, Ming-Chung Wu, Wei-Fang Su, Tzu-Chia Wang
Summary: This study explores the morphologies and properties of polyurethane/cellulose composites by blending with either ethyl cellulose or cellulose nanofiber through different processes. The effect of cellulose additives on the composites' properties and structures are investigated systematically, providing insights for designing future cellulose composites.
CARBOHYDRATE POLYMERS
(2022)
Article
Biochemistry & Molecular Biology
Ge Ma, Qianshu Wang, Jun Ye, Lifan He, Longhai Guo, Xiaoyu Li, Teng Qiu, Xinlin Tuo
Summary: This study developed a high-performance waterborne polyurethane (WPU) as a binder for polymer fiber composites using a multi-step chain extension method. By optimizing the chain extending reaction, the WPU exhibited excellent mechanical properties, suitable interfacial adhesion, and potential application for high-performance fabric composites.
Article
Biochemistry & Molecular Biology
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt
Summary: The use of evening primrose oil cake as a bio-filler significantly influences the morphology of foams, leading to improved physico-mechanical and thermal insulation properties while reducing flammability. Thorough mixing allows better homogenization of the bio-filler in the polyurethane matrix, resulting in a regular cellular structure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Construction & Building Technology
Zhidan Rong, Maopeng Jiao, Jiaqi Zhang
Summary: The effect of modified nano-SiO2 on the performance of high-performance cementitious composites was investigated and it was found that the addition of MNS improved the fluidity, compressive strength, durability, and autogenous shrinkage of HPCC. Additionally, MNS accelerated the hydration process, resulting in increased heat release and better microstructure and interface transition zone of HPCC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gang Wang, Hua Tan, Chunjing Lu, Ao Sun
Summary: SiO2@PEGMA composites were synthesized by grafting poly(ethylene glycol) methacrylate (PEGMA) on SiO2 nanoparticles. The composites exhibited excellent dispersion stability and filling effect, promoting hydration reaction and enhancing the compressive strength of cement samples.
Article
Materials Science, Composites
Siham Ez-Zahraoui, Salma Sabir, Sabah Berchane, Rachid Bouhfid, Abou El Kacem Qaiss, Fatima-Zahra Semlali Aouragh Hassani, Mounir El Achaby
Summary: The study investigated the effect of TPU elastomer on the ductile character of fly ash-reinforced polypropylene composites, demonstrating that the addition of TPU can restore ductility without sacrificing stiffness. A balance between the ratios of rigid particles and elastomer in a polymer matrix produces a multiphase polymer system with optimal mechanical performance, making them promising materials for engineering applications.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Ceramics
Thamer Alomayri, Ali Raza, Faiz Shaikh
Summary: The addition of nano silica significantly enhances the mechanical properties and microstructure of micro steel fiber reinforced fly ash geopolymer composites, producing a denser matrix and refining the interfacial zones. The optimal amount of nano silica recommended for optimal behavior in these composites is 2%.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Chengxing Zhu, Zhou Zheng, Feng Cao, Yang Xiang, Zhihang Peng
Summary: The study successfully fabricated Al(2)O(3)fiber-reinforced silica matrix composites using the traditional sol-gel process, and investigated their mechanical properties under high temperatures. The composites exhibited outstanding tensile and flexural strength at high temperatures, with the ability to maintain high tensile strength even at 1300 degrees C. Additionally, the composites displayed ductile fracture after tensile tests and brittle fracture after heat treatment without the formation of new phases.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Composites
Fan Hu, Feng Qi, Zehui Xiang, Biao Zhang, Fugang Qi, Nie Zhao, Xiaoping Ouyang
Summary: The study shows that PUE with 2wt% IL@SiO2 loading has the best static compressive properties and dynamic impact resistance, with improvements in static and dynamic compressive yield strength by 216.15% and 190.68% compared to pure PUE. Energy absorption is also increased by 18.87%, with excellent deformation recovery performance. This indicates that IL@SiO2 is an excellent impact resistance and reinforcing material for PUE.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Composites
Hongbo Hou, Zejun Pu, Xu Wang, Rongli Zhu, Xianyong Li, Jiachun Zhong
Summary: In this study, WPU@SiO2 nanoparticles were successfully obtained and introduced into PBS matrix to prepare composites. The grafting of WPU onto the surface of SiO2 significantly improved the dispersibility and interfacial compatibility of the filler and matrix. The PBS/WPU@SiO2 composites showed excellent thermal and mechanical properties.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Physical
A. Guseva, N. Pestereva, D. Otcheskikh, D. Kuznetsov
Summary: By doping nano-SiO2 into the poor oxygen ion conductor CaWO4 at low concentrations, the ionic conductivity of the composites can be significantly increased. The additional contribution from the interface regions formed between the host and nanoparticles is believed to be one of the reasons for the enhancement of conductivity, while a general mixing rule can be applied for the calculation of the composite's electric conductivity.
SOLID STATE IONICS
(2021)
Review
Polymer Science
Gopinath Kasi, Sathishkumar Gnanasekar, Kai Zhang, En Tang Kang, Li Qun Xu
Summary: This review discusses the recent advancements and potential of polyurethane (PU) composites for antibacterial applications. By incorporating fillers into the PU matrix, the resulting products exhibit unique and improved physicochemical properties. The bactericidal ability of PU composites depends on their surface composition, morphology, charge, and stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
