Article
Materials Science, Multidisciplinary
Mariya A. Kazakova, Georgiy V. Golubtsov, Alexander G. Selyutin, Arcady V. Ishchenko, Alexandra N. Serkova, Gleb V. Gorokhov, Philip Y. Misiyuk, Nadzeya I. Valynets
Summary: An efficient strategy for synthesizing Ag/MWCNT-PMMA composites has been proposed, which involves modifying oxidized MWCNT with Ag nanoparticles and dispersing them in a PMMA matrix. By adjusting the MWCNT-Ox content, the electrical conductivity of the composites can be tuned. The Ag/MWCNT-PMMA composites demonstrate high shielding efficiency and improved electromagnetic properties due to the conductive nature and uniform distribution of fillers in the polymer.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Ecem Erman, Dumitru Ulieru, Nilgun Baydogan
Summary: The magnetic susceptibility of PMMA/MWCNT nanocomposite prepared by ATRP method can be tuned depending on the concentration of MWCNTs, offering opportunities for the construction of cost-effective and efficient magnetic devices.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2023)
Article
Construction & Building Technology
A. M. Fattahi, Babak Safaei, Zhaoye Qin, Fulei Chu
Summary: The effect of nanoparticle volume fraction on the elastic properties of a polymer-based nanocomposite was experimentally investigated. 1 wt.% nanoparticles presented the best reinforcement behavior, while above 1 wt.%, the agglomeration of nanoparticles resulted in decreased elastic properties.
STEEL AND COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Jian-Ping Cao, Jun Zhao, Xiaodong Zhao, Zhi-Min Dang
Summary: A facile route to prepare high-performance dielectric nanocomposites of PMMA/PVDF/MWNTs was developed, forming a cocontinuous structure through spinodal phase separation. The composites exhibit excellent ductility and conductivity, providing a general pathway to prepare high-performance dielectric polymer materials containing cocontinuous microscale and nanoscale structures.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Hongyuan Zhao, Huina Ma, Xiaoguang Li, Binbin Liu, Runqiang Liu, Sridhar Komarneni
Summary: The electrode sensor prepared with halloysite/multi-walled carbon nanotubes nanocomposite showed excellent performance in detecting methyl parathion, with a low detection limit and good detection effect.
APPLIED CLAY SCIENCE
(2021)
Article
Electrochemistry
Tomasz Rebis, Maria Kuznowicz, Artur Jedrzak, Grzegorz Milczarek, Teofil Jesionowski
Summary: In this study, the chemical polymerization of caffeic acid on multi-walled carbon nanotube surface was reported, resulting in a nanostructure that showed excellent electrocatalytic ability and high sensitivity when employed as a modifier for glassy carbon electrode. By varying the synthesis time, the redox couple's potential could be shifted towards negative values, demonstrating the superior electron transfer ability of PCA@MWCNT. Physicochemical characterization and electrochemical analysis confirmed the successful preparation and excellent performance of the modified electrode for NADH oxidation.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Chemical
Wai Kian Tan, Yasuki Matsubara, Atsushi Yokoi, Go Kawamura, Atsunori Matsuda, Issei Sugiyama, Naoya Shibata, Yuichi Ikuhara, Hiroyuki Muto
Summary: This study reports on the feasible formation of carbon nanotubes (CNT)-incorporated poly (methyl methacrylate) (PMMA) composite pellets, which exhibited good electrical conductivities with high optical transparency. The findings suggest a promising prospect for manufacturing lightweight, transparent, and conductive polymers through powder metallurgy-inspired methods.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Kun-Tse Yang, Je-Chuan Hsu, Fuqian Yang, Sanboh Lee
Summary: This study investigated the effects of UV light irradiation on multiwall-carbon-nanotube reinforced poly(methyl methacrylate) composites, focusing on changes in glass transition temperature and mechanical properties. The addition of MWCNTs increased the glass transition temperature of the composites, but UV irradiation negatively affected the properties. The research presented a simple equation to calculate the effective modulus of the composites and found that toughness and elongation were higher in composites without UV irradiation.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Composites
Saptarshi Ghosh, Gilad Otorgust, Alexander Idelevich, Omri Regev, Igor Lapsker, Dan Y. Lewitus, Alla Zak
Summary: By incorporating tungsten disulfide nanotubes (INT-WS2) into the PMMA matrix, improvements in flexural strength, tensile strength, impact strength, and toughness were achieved. The reinforcing mechanism of INT-WS2 is attributed to the homogeneous distribution and alignment of nanotubes in the molded samples.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jyotsna Ramachandran, Joel M. Serrano, Liu Tianyu, Jinwon Cho, Pedro J. Arias-Monje, Mingxuan Lu, Mohammad Hamza Kirmani, John Elliott, Seung Soon Jang, Guoliang Liu, Satish Kumar
Summary: Block copolymer-based porous carbon fibers produced by gel-spinning exhibit excellent mechanical and electrochemical properties. The structure and pyrolysis temperature have a significant impact on the performance of the fibers.
Article
Polymer Science
Elisa Guazzelli, Matteo Oliva, Carlo Pretti, Gianfranca Monni, Armand Fahs, Christine Bressy, Elisa Martinelli
Summary: Hydrolyzable block copolymers consisting of polyethylene glycol and poly(trialkylsilyl methacrylate-co-methyl methacrylate) were synthesized and their hydrolysis performance and erosion behavior in artificial seawater were studied. The results showed that the copolymer film surfaces could respond to the water environment and demonstrated antifouling behavior against diatoms.
Article
Polymer Science
Xin Han, Ning Gong, Xiaowen Si, Chenxi Jiang, Jia Xu, Shimeng Sun, PingPing Zhan, Jingshan Mu
Summary: Crystallization-driven self-assembly of PMMA-b-PE-b-PMMA triblock copolymers was studied in toluene and toluene-chloroform mixture solutions. The structure of the amorphous corona-forming block, solvent selectivity, and crystallization temperature were found to play important roles in controlling the morphology of the micelles. Different types of micelles, such as striped disk-like and striped lozenge-shaped micelles, as well as one-dimensional crystalline cocoon silk micelles, were formed depending on the cooling process and crystallization temperature.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Polymer Science
Merve Ozkutlu, Goknur Bayram, Cerag Dilek
Summary: By using CO2-philic nanoparticles, octatrimethylsiloxy polyhedral oligomeric silsesquioxanes (POSS), the affinity of poly(methyl methacrylate) (PMMA) to CO2 in supercritical carbon dioxide (scCO(2)) foaming can be increased, resulting in improved foaming performance and foam morphology. The composite foams showed smaller average pore sizes and higher pore densities compared to neat PMMA, with the smallest pore diameter and highest pore density achieved under specific processing conditions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Environmental Sciences
S. M. Lee, M. F. M. Yusop, W. L. Ng, M. A. Ahmad, S. H. Tan
Summary: This study successfully synthesized PET and PET/MWCNT adsorbents for the adsorption of dye pollutant methylene blue (MB). PET/MWCNTs showed higher adsorption capacity and removal percentage. The adsorption capacity decreased but the removal percentage increased with increasing adsorbent dosage.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Jun Zhong, Xinyue Zhang, Xiaofeng Yu, Xuanyu Shi, Shihao Sun, Li Yang, Min Zuo, Yihu Song, Qiang Zheng
Summary: The selective distribution of silica nanoparticles grafted with crosslinked PMMA in PMMA/SAN blend was studied. Highly crosslinked PMMA chains mainly located in the PMMA-rich domains, while linear PMMA chains mainly located at the blend matrix interface. NPs grafted with slightly crosslinked chains were partially located at the interface and partially in the PMMA-rich domains. The deviation between theoretical prediction and actual location of modified NPs may be related to the heterogeneity of miniemulsion polymerization. The different locations of modified NPs induced by different grafted chain structures can result in various compatibilization effects on PMMA/SAN blend.
Article
Materials Science, Multidisciplinary
Claudia Roman, Moises Garcia-Morales, Marius A. Olariu, Tony McNally
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Construction & Building Technology
C. Roman, M. A. Delgado, M. Garcia-Morales
MATERIALES DE CONSTRUCCION
(2020)
Article
Computer Science, Interdisciplinary Applications
Claudia Roman, Miguel A. Delgado, Moises Garcia-Morales
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2020)
Article
Nanoscience & Nanotechnology
Miguel Angel Delgado-Canto, Samuel David Fernandez-Silva, Claudia Roman, Moises Garcia-Morales
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Claudia Roman, Liliana Lazar, Moises Garcia-Morales
JOURNAL OF CHEMICAL EDUCATION
(2020)
Article
Computer Science, Interdisciplinary Applications
Claudia Roman, Miguel A. Delgado, Moises Garcia-Morales
Summary: Mobile learning is an emerging educational methodology that can improve students' grades, promote learning, increase interest in learning, and create a better learning environment.
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2021)
Article
Green & Sustainable Science & Technology
Claudia Roman, Moises Garcia-Morales, Maria E. Eugenio, David Ibarra, Raquel Martin-Sampedro, Miguel A. Delgado
Summary: A method aimed at developing sustainable oleogels for lubrication applications was reported, utilizing cellulose nanofibrils from elm pulps in castor oil. The study highlighted the high thickening power of cellulose nanofibers and their potential as a material for lubrication applications.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Samuel D. Fernandez-Silva, Miguel A. Delgado, Claudia Roman, Moises Garcia-Morales
Summary: Nanocellulose demonstrated noticeable friction-reducing and anti-wear properties in vegetable oil, depending on the nanocellulose concentration, base oil composition, and applied pressure. Adding 3.3 wt.% or higher nanocellulose in castor oil-rich mixtures can achieve excellent tribological performance.
Article
Agricultural Engineering
S. D. - Fernandez-Silva, M. A. Delgado, M. V. Ruiz-Mendez, I. Giraldez, M. Garcia-Morales
Summary: This study investigates the feasibility of using waste cooking oils as eco-lubricants and separates them into lighter and heavier fractions through molecular distillation. A comprehensive chemical characterization is conducted, revealing high viscosity index values in waste cooking oils with low polar compounds and acidity levels. It is also found that the lighter fractions composed of free fatty acids demonstrate improved oxidative resistance, while the heavier fractions exhibit better thermal stability. Furthermore, both fractions show enhanced friction-reducing capability compared to their parent waste cooking oils.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Engineering, Environmental
Claudia Roman, Miguel A. Delgado, Samuel D. Fernandez-Silva, Moises Garcia-Morales
Summary: Sustainable lubricating oleogels were obtained by utilizing the high thickening capacity of cellulose nanofibers in castor oil. The effect of pulp bleaching on the thermo-rheological behavior of the oleogels was analyzed, and it was found that oleogels prepared with nanofibers from unbleached pulp performed better under shear deformations and temperature changes, demonstrating a strong capacity for structure recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Mechanical
Samuel D. Fernandez-Silva, Moises Garcia-Morales, Charlene Ruffel, Miguel A. Delgado
Summary: This study demonstrates that fiber-like nanoclay Pangel B20 acts as a good anti-wear and load-carrying additive in eco-friendly lubricants, while Cloisite 15A has friction reducing properties. These anti-wear and friction reducing properties are influenced by both nanoclay concentration and oil viscosity.
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.
