Article
Engineering, Chemical
You-Sheng Lin, Kuen-Song Lin, Wei-Chin Tsai, Ndumiso Vukile Mdlovu, Cheng-Yan Tang, U-Ser Jeng
Summary: In this study, cubic CeO2 nanoparticles with uniform structure were synthesized using cetyltrimethylammonium bromide (CTAB) as a cationic surfactant, and these nanoparticles were used for silica wafer polishing. The results showed that the CTABx-CeO2 NPs reduced the roughness of the raw material by 70.7-74.5%.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Multidisciplinary Sciences
Takahiro Kakuta, Yudai Baba, Tada-aki Yamagishi, Tomoki Ogoshi
Summary: Clays are multi-layered inorganic materials with thermodynamically stable structures, which makes it challenging to improve their dispersity by changing them into single layers. This study demonstrates that the use of novel intercalants capable of forming polyrotaxanes with poly(ethylene glycol) can effectively exfoliate clay, leading to enhanced properties in composite materials.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Composites
Lahouari Mrah, Rachid Meghabar
Summary: This study focuses on the preparation and characterization of poly(propylene oxide) (PPO)/organic clay nanocomposites. The effects of different organoclays and preparation methods on the properties of the nanocomposites were investigated. The results showed that intercalation at the interface between PPO and clay improved the thermal stability of the nanocomposites, and the presence of clay increased the rigidity of the nanocomposites.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Liva Dzene, Anne-Sophie Schuller, Frederyck Tidas, Severinne Rigolet, Jocelyne Brendle, Christelle Delaite
Summary: Composite materials exhibit improved properties compared to pristine materials, especially when the filler is homogeneously dispersed in the matrix. This study suggests an innovative approach of forming a talc-like structure directly in a polymer matrix using a silanized polymer as the silicon source. Poly(ethylene glycol) methyl ether of different average molar masses (M-n = 350, 500, 750, 1900 g mol(-1)) were functionalized with (3-isocyanatopropyl)triethoxysilane and added to ethanolic solutions of magnesium nitrate. H-1-Si-29 CPMAS solid state NMR experiments revealed partial condensation of silane compounds, and FTIR analysis confirmed the presence of Si-O and Mg-O bonds, but further evidence is needed to prove the formation of the Si-O-Mg bond and the talc-like structure.
DALTON TRANSACTIONS
(2023)
Article
Thermodynamics
Wladyslaw Janusz, Ewa Skwarek, Dariusz Sternik, Stanislaw Pikus
Summary: Yttrium citrate was synthesized in aqueous environment through hydrothermal treatment. The product is crystalline yttrium citrate dihydrate, which undergoes thermal decomposition in synthetic air, releasing water and carbon dioxide.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
A. Czajka, G. Liao, O. O. Mykhaylyk, S. P. Armes
Summary: This study focuses on the formation of polymer/silica nanocomposite particles through surfactant-free aqueous emulsion polymerization, monitoring key parameters using various techniques to understand the process.
Article
Chemistry, Multidisciplinary
Oindrila Halder, Muriel E. Layani-Tzadka, Shiran Ziv Sharabani, Gil Markovich, Amit Sitt
Summary: A method of incorporating electrical conductivity into single polymer fibers by growing a thin, optically transparent gold-silver nanowire mesh directly on the surface of the fibers is presented. The morphology of the nanowire network depends on the diameter of the fibers and the stiffness of the surfactant templates used. The conductivity of the decorated fibers increases significantly, and they exhibit flexibility and transparency, making them suitable for various smart electronic textile applications.
NANOSCALE ADVANCES
(2022)
Article
Polymer Science
Xiuju Lin, Hao Pang, Daidong Wei, Bing Liao
Summary: In this study, crosslinked polycarboxylate superplasticizers were synthesized using different crosslinking agents, and their performance was characterized. It was found that superplasticizers containing ester groups exhibited better dispersibility, fluidity retention, and adsorption capacity than those containing amide groups. Additionally, the ester-based superplasticizers promoted cement hydration to a greater degree than their amide-based counterparts.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Riki M. McDaniel, Michael S. Carey, Olivia R. Wilson, Michel W. Barsoum, Andrew J. D. Magenau
Summary: This study addresses limitations in the large-scale production of MXene nanocomposites by proposing a simple method of covalently modifying MXenes with isocyanates, enabling their successful dispersion within a hydrophobic matrix. The method is scalable and highly modular, providing a valuable tool for easily quantifying reactive terminations on MXene surfaces and accessing well-dispersed nanocomposites.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Minhao Wu, Feixiang Chen, Ping Wu, Zhiqiang Yang, Sheng Zhang, Lingfei Xiao, Zhouming Deng, Chong Zhang, Yun Chen, Lin Cai
Summary: A novel biodegradable nanocomposite scaffold was constructed with enhanced mechanical and physical properties ideal for bone tissue engineering, providing essential signaling cues for bone regeneration through sustained ion release. In vivo, the nanocomposites demonstrated significant osteointegration and bone-forming ability, confirming their potential as a viable strategy for enhancing the regeneration of large bone defects.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Ioannis S. Tsagkalias, Alexandra Loukidi, Stella Chatzimichailidou, Constantinos E. Salmas, Aris E. Giannakas, Dimitris S. Achilias
Summary: The study investigated bulk radical polymerization of styrene in the presence of different bioactive essential oils (EO) and montmorillonite, showing that different EO have varying effects on the polymerization kinetics and polymer molecular weight distribution. Additionally, it was found that organo-modified montmorillonite led to better dispersion compared to sodium montmorillonite in the nanocomposites formed.
Article
Materials Science, Multidisciplinary
Walther-Dario Bejarano-Pena, Brenda Alcantar-Vazquez, Rosa-Maria Ramirez-Zamora
Summary: Lithium silicate-based CO2 sorbents were synthesized using steel metallurgical slags, with K2CO3 addition improving CO2 capture efficiency by facilitating CO2 diffusion. The best capture capacity value of 104 mg(CO2)/g(material) was achieved with 20 wt% K2CO3 at 600 degrees C. Thermal stability was excellent, with only a 10% reduction in CO2 capture capacity after 20 adsorption-desorption cycles using 20 vol% CO2.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
H. M. Fayzan Shakir, Mahnoor Shahzad, Huzaifa R. Aziz, M. Saad Rizwan, Sohaib Shahid, S. Hasan Ali, Tingkai Zhao
Summary: In this study, barium hexaferrite-polypyrrole (BHF-Ppy) nanoparticles were synthesized by in-situ polymerization method and showed excellent electromagnetic interference shielding properties in both near-infrared and microwave regions, as confirmed by microstructure characterization and performance testing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
Chuanwei Zhang, Riguo Wang, Aihua He
Summary: Rubber nanocomposites with desired dual network structures were successfully constructed by in-situ polymerization in the presence of carbon black. The modified NR vulcanizates exhibited improved comprehensive properties.
Article
Materials Science, Multidisciplinary
Judith E. Rauschendorfer, Jytte Mockelmann, Philipp Vana
Summary: Matrix-free nanocomposite films of PMA and MMT nanosheets were developed to mimic the microscopic structure of nacre, and their mechanical properties were studied in detail through tensile testing. The experiments showed that the chain mobility of the surface-grafted polymer has a strong influence on the mechanical properties of the nanocomposite material.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Polymer Science
Lahouari Mrah, Mohamed Marref, Radja Megherbi
Summary: This study aims to investigate the thermal and mechanical properties of polyamide 12 (PA12) nanocomposites, focusing on the reinforcement mechanisms of nanofillers in thermoplastic matrices. The results suggest a significant improvement in the mechanical properties of PA12/CTA-Mag nanocomposites.
JOURNAL OF POLYMER ENGINEERING
(2022)
Article
Materials Science, Characterization & Testing
Lahouari Mrah
Summary: A detailed study was conducted on the synthesis, characterizations, and properties of poly(3,4-ethylenedioxythiophene)/Mag-CTA nanocomposites. The dispersion of 3,4-ethylenedioxythiophene matrices in organic clay sheets was improved to develop poly (3,4-ethylenedioxythiophene) (PEDOT) nanocomposites from a natural clay called Maghnite. Physico-chemical techniques such as X-ray diffraction, infrared spectroscopy, and microscopy were used to analyze the nanocomposites. The results showed successful insertion of PEDOT into the Mag-CTA interlayer and improved thermal stability with the presence of clay.
POLYMERS & POLYMER COMPOSITES
(2022)