Article
Materials Science, Multidisciplinary
Yiling Huang, Jing Gao, Han Gao, Ya Chen, Yunbo Zang, Jiashu Sun, Chi Zhang
Summary: In this paper, an azide polyether (PADOL) and azide-containing polyether copolymers (PBAMO-ADOLs) were synthesized through a simple two-step reaction. PADOL exhibited controlled molar mass, low dispersity, and improved flexibility compared to PAMMO. It also had a lower glass transition temperature and viscosity, and a higher fracture elongation.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Tinghao Zhang, Wenzheng Zhang, Zichun Ding, Jianjian Jiao, Jinyan Wang, Wei Zhang
Summary: A fluorine-containing benzoxazine co-cured with biphenyl epoxy for the integrated circuit industry was studied. The curing kinetics, rheological behavior, and thermal stability of the co-curing systems were investigated. Quartz fiber cloth reinforced composites were prepared and their mechanical, thermal, and dielectric properties were evaluated.
Article
Polymer Science
Jiamei Liu, Weichen Sheng, Rui Yang, Yu Liu, Yin Lu, Kan Zhang
Summary: A series of bio-based fluorin-free main-chain type benzoxazine precursors were synthesized via Mannich condensation reaction using bisphenol A/bisphenol F/diallyl bisphenol A, Priamine 1074 and paraformaldehyde. The chemical structures of the obtained main-chain precursors were characterized using FT-IR and NMR spectroscopies. The thermal stability and surface free energy were evaluated using DSC, in situ FT-IR analysis, water contact angle instrument, DMA and TGA, demonstrating the great potential of these bio-based polybenzoxazine resins as high-performance resin matrices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Xinyao Xu, Wenlin Zhao, Yaxi Hu, Liquan Wang, Jiaping Lin, Huimin Qi, Lei Du
Summary: Traditional material design principles for thermosetting polymers are inefficient due to conflicting properties. Machine learning combined with limited experimental data and all-atomic simulations can establish robust property estimation models. Virtual candidates are screened and promising polycyanurates are identified through well-trained ML models, verified by theoretical simulations and proof-of-concept experiments. The proposed framework can accelerate the rational design of polymers and reveal underlying physical rules.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Polymer Science
Sophie R. Goodwin, Amy Stimpson, Richard Moon, Lauren Cowie, Najib Aragrag, Sorin Filip, Andrew G. Smith, Derek J. Irvine
Summary: A novel method for synthesising hyperbranched materials is described, along with their use as additives in lubricant formulations to improve wear protection and low-temperature oil viscosity. The lubricant formulations containing the hyperbranched additives showed significantly lower viscosities and improved film-forming properties compared to industry standard formulations.
Article
Polymer Science
Jiyoung Lee, Seonho Kim, Hyeoksu Kwon, Seungyun Jo, Du Yeol Ryu, U. Hyeok Choi, Byeong-Su Kim
Summary: Solid polymer electrolytes are potential alternatives to address safety concerns with liquid electrolytes. A new type of polyether-based single-ion-conducting solid polymer electrolyte was developed, which can be tailored with different functional groups. By introducing tri(ethylene glycol) and succinonitrile, the ionic conductivity of the electrolyte was significantly increased.
Article
Polymer Science
Yiqing Xia, Shuai Yan, Rui Shi, Linze Liu, Junlong Zhu, Yuntao Zeng, Chen Gao, Wilfred Emori, Yuping Sheng
Summary: In this study, a novel main-chain benzoxazine precursor with cycloaliphatic and aliphatic structures was successfully synthesized. Its chemical structure and polymerization behavior were characterized, and its thermal properties, dielectric properties, surface hydrophobicity, and tensile properties were explored. The synthesized material showed excellent overall performances, qualifying it as a potential candidate for applications in ultra-large-scale integrated circuits and high-performance composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yongfei Zhang, Zewen Zhu, Jun Tang
Summary: The development of a new generation of carbon dioxide thickeners is essential for enhancing carbon dioxide flooding technology. By preparing co-polymers and evaluating their solubility and thickening ability in CO2, the study demonstrates that modifying the polymers can significantly increase solubility and thickening effect, particularly with the incorporation of phenyl groups. The implications of the study for preparing a highly efficient CO2 thickener are discussed.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jiaren Hou, Jing Sun, Qiang Fang
Summary: Low dielectric (low-k) organosilicon polymers have attracted extensive attention due to their good electrical insulation, high temperature resistance, flame retardancy, and hydrophobicity. They can be used as low-k materials in the fabrication of electronic devices in high-frequency communication technology. This review summarizes recent progress in developing low-k organosilicon polymers, including their synthetic methods and properties categorized by their chemical structures. It may inspire the design of new low-k organosilicon polymers for future applications.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Textiles
Minju Jang, Jin Kyung Park, HoDong Kim
Summary: Main-chain benzoxazine shows great potential in various fields, especially fiber chemistry, due to its flexible molecular design and viscosity. Blending with a low molecular weight benzoxazine with excellent thermal properties can improve its thermal properties. In this study, two types of bisphenol-A-based main-chain benzoxazine were synthesized and blended, and their thermal properties were investigated.
FIBERS AND POLYMERS
(2023)
Article
Polymer Science
Chien-Ho Huang, Ying-Ling Liu
Summary: In this work, an effective approach using Meldrum's acid-containing diamine (MADA) as a functional monomer has been demonstrated to address the gelation and low molecular weight issues in the polymerization system of main-chain PBz. The resulting cross-linked PBz shows superior film formability, flexibility, high glass transition temperature, and Young's modulus compared to conventional oxydianiline-based cross-linked PBz, indicating significant advances in both PBz synthesis and properties.
Article
Engineering, Chemical
Qichao Ran, Wei Zhang, Pengcheng Li
Summary: Two silicon-containing main chain type benzoxazines, ABA-Si-ala and ABA-Si-a, were synthesized and characterized. Poly(ABA-Si-ala)main showed excellent heat resistance and thermal stability with a Tg of 308 degrees C and a char yield of 48.5% at 800 degrees C.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Polymer Science
Jing Wang, Tian Wang, Qian Jiang, Yuping Zhang, Yuan Qiu, Hong Wang, Guochuan Yin, Yonggui Liao, Xiaolin Xie
Summary: This study successfully synthesized two AIE-active gelators with different liquid crystal properties and gelation capabilities through melt polycondensation. These AIE-active gels show potential applications in temperature sensor and information storage.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Polymer Science
Yaroslav Kobzar, Kateryna Yu. Fatyeyeva
Summary: Polybenzoxazines (PBzs) are highly cross-linked thermostable resins with remarkable physical-chemical properties. However, their high brittleness limits their real-world applications. This study investigated the influence of the length of polypropylene glycol/polyethylene glycol blocks on the properties of PBz-based flexible films. The regulation of molecular weight provides freedom for polymer subchain movement and the formation of organized structures with tunable material properties, making the synthesized polymer resins attractive for industrial applications.
Article
Polymer Science
Zakarya Ahmed, Khaled Charradi, Qana A. Alsulami, Sherif M. A. S. Keshk, Radhouane Chtourou
Summary: The study blended low sulfonation degree polyether ether ketone (PEEK) with different proportions of sodium-rich Smectite clay to use as an electrolyte membrane for fuel cell application. The composite membranes showed higher thermal stability, lower crystallinity, and increased conductivity, making them potential candidates for methanol fuel cells at temperatures above 120 degrees C, competitive to Nafion membrane.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Hemant Mittal, Ali Al Alili, Pranay P. Morajkar, Saeed M. Alhassan
Summary: This study focused on preparing xanthan gum based hydrogel nanocomposites via chemical-crosslinking with graphene oxide for the highly efficient adsorption of crystal violet dye from contaminated wastewater. The results showed that the material has the potential to treat cationic dyes contaminated wastewater in large quantities, with good reuse efficiency demonstrated through twenty continuous cycles of adsorption-desorption.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Nanoscience & Nanotechnology
Frank M. Abel, Georgia Basina, Vasileios Tzitzios, Saeed M. Alhassan, David J. Sellmyer, George C. Hadjipanayis
Summary: CoPt nanoparticles were synthesized with the presence of a bismuth additive, enhancing structural ordering and magnetic properties. After thermal annealing, the coercivity of the nanoparticles significantly increased, with potential applications in permanent magnets and low Pt-based catalysts.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Hemant Mittal, Ali Al Alili, Pranay P. Morajkar, Saeed M. Alhassan
Summary: The synthesized GO/PEI-NCH hydrogel demonstrated high adsorption capacity for Cr(VI) contaminated water, good stability, and reusability through multiple adsorption-desorption cycles, making it a promising candidate for wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Chemical
Omer Elmutasim, Saeed M. Alhassan
Summary: This research used density functional theory calculations to investigate the influence of different surface terminations of Ni2P catalyst on the direct desulfurization reaction of DBT, finding that the DBT desulfurization process is thermodynamically favorable on the Ni3PS surface and the first C-S bond cleavage of DBT is the rate-controlling step. Partially sulfided Ni3P2 provides a better model than fresh Ni3P2 surface.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Aasif A. Dabbawala, K. Suresh kumar Reddy, Hemant Mittal, Yasser Al Wahedi, Balasubramanian V. Vaithilingam, Georgios N. Karanikolos, Gnana Singaravel, Stephane Morin, Mikael Berthod, Saeed M. Alhassan
Summary: The study successfully synthesized zeolite-Y samples with a hierarchical porous structure using a bifunctional cationic polymer and ion-exchange with metal salts. Different metal ions were introduced into the zeolite-Y structure to enhance water adsorption capacity. The results showed that the hierarchical porous zeolites exhibited improved water uptake capacity compared to conventional zeolite-Y, with the introduction of distinct metal ions leading to further enhancements in water adsorption performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Energy & Fuels
Helanka J. Perera, Anjali Goyal, Hussaina Banu, Saeed M. Alhassan
Summary: In this study, a surface-modified polyurethane foam was successfully synthesized and applied as an absorbent for hydrophobic materials. Through the functionalization of diatomaceous earth and fluorosilane, the surface properties of the polyurethane foam were significantly improved, resulting in enhanced hydrophobicity and absorption capacity.
MRS ENERGY & SUSTAINABILITY
(2022)
Article
Materials Science, Textiles
Helanka J. Perera, Anjali Goyal, Saeed M. Alhassan
Summary: This investigation successfully functionalizes raw date palm fibers (DPFs) using fluoro and non-fluorosilane coupling agents through liquid-phase silanization method. The modified DPFs show improved thermal properties and higher fraction of crystalline cellulose, making them promising reinforcing materials in hydrophobic polymer composites.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Energy & Fuels
Sunil P. Lonkar, Vishnu V. Pillai, Saeed M. Alhassan
Summary: To address the growing concerns over energy and the environment, the design and development of high-performance energy storage and conversion materials is highly desirable. In this study, a scalable and simplistic method was proposed to prepare a 3D MoS3/reduced graphene oxide (RGO) aerogel with excellent electroactive properties. The resulting nanohybrid showed enhanced performance as a supercapacitor electrode and electrocatalyst for hydrogen evolution reaction (HER).
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Niki Karouta, Yannis V. Simos, Georgia Basina, Konstantinos Spyrou, Mohammed Subrati, Alexandra V. Chatzikonstantinou, Mohamed Amen Hammami, Vasileios Tzitzios, Saeed M. Alhassan, Yasser Al Wahedi, Alexios P. Douvalis, George C. Hadjipanayis, Konstantinos Tsamis, Evangelia Dounousi, Georgios S. Markopoulos, Sofia Bellou, Vasilios Georgakilas, Dimitrios Peschos, Zili Sideratou, Haralambos Stamatis, Dimitrios P. Gournis, Emmanuel P. Giannelis
Summary: This study presents a new strategy for designing highly hydrophilic and functional nanoparticles through a haircut reaction. The as-synthesized SPIONs, modified by oleylamine molecules, exhibit high hydrophilicity, dispersibility in water, and functionality. These functional nanoparticles show selective cytotoxic effects against cancer cells and have the potential to be developed into a new generation of nanomaterials for biomedical applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
Riffat Amna, Kabbir Ali, Saeed M. Alhassan
Summary: This computational study examines the adsorption of mercury from wastewater using inversed-vulcanized porous sulfur copolymers. Two previously reported inverse-vulcanized sulfur copolymer foams were selected for the study. The effects of various process parameters on mercury adsorption were analyzed to optimize the conditions for high adsorption capacity and predict suitable operational parameters for industrial applications. The results showed that the sulfur copolymer foam prepared using poly (sodium 4-styrene sulfonate) exhibited higher adsorption efficiency compared to other samples.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Engineering, Electrical & Electronic
Awais Zaka, Saeed M. Alhassan, Ammar Nayfeh
Summary: With the increasing demand for energy and the depletion of conventional fuels, solar cells are emerging as an excellent alternative, providing a sustainable and clean source. Transition metal dichalcogenides, such as iron disulfide or pyrite, have gained significance in the field of photovoltaics due to their advantageous properties and potential for high efficiency. This study reviews recent progress in the synthesis of pyrite and its utilization in photovoltaics, exploring its properties, challenges, and potential for further research.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Physics, Multidisciplinary
W. Papawassiliou, J. P. Carvalho, H. J. Kim, C. Y. Kim, S. J. Yoo, J. B. Lee, S. Alhassan, S. Orfanidis, V. Psycharis, M. Karagianni, M. Fardis, N. Panopoulos, G. Papavassiliou, A. J. Pell
Summary: By using DFT-assisted high-resolution nuclear magnetic resonance (NMR) spectroscopy, low energy excitations of Weyl fermions in WTe2 were detected and their evolution with temperature was observed. The emergence of Weyl fermions at around 120 K was found to be induced by the rapid increase of the Fermi level upon heating. The characteristic change of NMR parameters at this temperature indicates a topological Lifshitz transition.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Materials Science, Biomaterials
Georgia Basina, George Diamantopoulos, Eamonn Devlin, Vassilis Psycharis, Saeed M. Alhassan, Michael Pissas, George Hadjipanayis, Aphrodite Tomou, Alexandros Bouras, Constantinos Hadjipanayis, Vasileios Tzitzios
Summary: A facile approach was used to synthesize magnetic Fe3O4 nanoparticles decorated by LAPONITE (R) nanodisks for localized magnetic hyperthermia and magnetic resonance imaging. The nanoparticles exhibited stable water dispersions and superior magnetic hyperthermia performance, and showed no toxicity in cell studies.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Engineering, Environmental
Hemant Mittal, Ali Al Alili, Saeed M. Alhassan
Summary: Incorporating deliquescent salts within a polymer matrix can prevent their dissolution during water vapor adsorption, improving the overall performance of desiccant systems. The synthesized superporous hydrogel composite showed increased adsorption capacity and followed a linear driving force model for adsorption kinetics, presenting a new class of highly effective solid desiccant material.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Sunil P. Lonkar, Saeed M. Alhassan
Summary: A nanostructured hybrid of MoS2-MoO2 and graphene was successfully synthesized using a simple in situ solvent-free strategy, demonstrating excellent electrochemical performance with high specific capacitance and stability. The synergistic effects between MoS2-MoO2 and graphene enhance ion diffusion, charge transfer, and provide active sites for the hydrogen evolution reaction, contributing to the outstanding electrochemical properties displayed by the hybrid material.
SUSTAINABLE ENERGY & FUELS
(2021)
