Article
Thermodynamics
Sohail Ahmad, Kashif Ali, Aftab Ahmed Faridi, Muhammad Ashraf
Summary: Hybrid nanoparticles, compared to pure nanoparticles, exhibit better performance and improved thermal characteristics, which can enhance heat transfer rate and concentration distribution. Through numerical techniques and experimental comparisons, the study found significant improvements in the characteristics of titanium oxide and copper in ethylene glycol flow in hybrid nanocomposites.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Nanoscience & Nanotechnology
Mathilde Grosjean, Sidzigui Ouedraogo, Stephane Dejean, Xavier Garric, Valeriy Luchnikov, Arnaud Ponche, Noelle Mathieu, Karine Anselme, Benjamin Nottelet
Summary: In this study, biodegradable self-rolling tubes that exhibit spontaneous and rapid actuation in water were designed. The use of specific materials and interface properties enabled fast self-rolling. The results confirm the potential of such materials in the field of temporary medical devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Marya Ivanovskaya, Katsiaryna Chernyakova, Evgeni Ovodok, Sergey Poznyak, Dzmitry Kotsikau, Matej Micusik
Summary: TiO2 nanotubes with specific dimensions were synthesized through anodic oxidation of Ti plates in ethylene glycol with the addition of NH4F and H2O. The black color of TiO2 nanotubes was achieved after heating in hydrogen. Carbon contributes to the black color of TiO2 nanotubes and the arrangement of carbon networks was revealed. The formation of graphitized carbon in a regular TiO2 nanoporous structure allows for the production of intensely colored films.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Applied
E. Suljovrujic, M. Krstic, Z. Rogic Miladinovic, S. Petrovic, A. Leskovac, G. Stamboliev
Summary: Hydrogels with OEG, OPG, and combined OEG/OPG pendant chains were synthesized and their properties were investigated. An optimized method for OPGMA synthesis was developed. PEG6MA, PPG5MA, and P(EG6/PG5)MA hydrogels were produced using gamma radiation-induced polymerization. The combination of OEG and OPG allowed easy tuning of the phase transition temperature, making it suitable for biomedical applications.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Francesca Signori, Jos W. H. Wennink, Simona Bronco, Jan Feijen, Marcel Karperien, Ranieri Bizzarri, Pieter J. Dijkstra
Summary: Poly(lactide) (PLA) and poly(ethylene glycol) (PEG)-based hydrogels were prepared by mixing enantiomerically pure copolymers with opposite chirality. The gelation process was found to follow different mechanisms depending on the nature of the linker R. Mixing equimolar amounts of the enantiomeric copolymers resulted in micellar aggregates with a stereocomplexed PLA core and a hydrophilic PEG corona.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Andrew Chung, Burak Tavsanli, Elizabeth R. Gillies
Summary: Hydrogels have diverse applications, and OPF has attracted attention for its tunable degradation. By introducing protected amines into OPF, the degradation rate can be controlled by triggering the cleavage of the polymer backbone. This approach can be applied to other stimuli, providing a versatile method to control OPF degradation.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zerui Su, Jian Zhang, Shiyao Lu, Feng-Shou Xiao
Summary: In this study, Nb-modified anatase-supported Pt nanoparticles were synthesized for efficient cellulose conversion to light bioalcohols. Characterization confirmed the presence of SMSIs in the catalysts, providing adjacent hydrogenation sites, Bronsted and Lewis acid sites. Treating the catalysts in humid air enhanced the acidic concentration, accelerating the key step during the reaction.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Jisu Hong, Yonghwan Kwon, Min Sang Kwon, Chaenyung Cha
Summary: This paper presents a brush copolymer, P(AzPEG), as a multifunctional polymeric cross-linker for carboxylate-containing acrylic adhesives. The density and length of the AzPEG brush can be conveniently controlled to effectively regulate the mechanical and adhesive properties of the adhesive without significant changes in concentration.
ACS APPLIED POLYMER MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Kun Lan, Qiulong Wei, Dongyuan Zhao
Summary: This Review discusses the synthesis of novel mesoporous TiO2 materials, with a focus on the monomicelle assembly strategy for controlling the formation of mesostructured TiO2. Typical applications of mesoporous TiO2 in batteries and photocatalysis are highlighted, and the outlook for the synthesis of mesoporous TiO2 with tailored architectures through self-assembly is discussed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Yi Zong, Pan Xu, Haoyu Yue, Xinxue Li
Summary: A water-soluble graft-copolymer HPMC-g-poly(AM/AA/APEG2400) was synthesized via free-radical copolymerization and demonstrated improved stability and salt resistance for profile control in high-temperature and high-salinity reservoirs. It also showed potential for hydrogel preparation with tunable gelation time and excellent long-term stability.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Sasan Dan, Maryam Kalantari, Ata Kamyabi, Madjid Soltani
Summary: In this research, chitosan-itaconic acid graft copolymer hydrogel was successfully synthesized with optimized reaction conditions. The structure, morphology, thermal stability, swelling behavior, antibacterial properties, and drug-loading capabilities of the hydrogel were studied and characterized, with successful loading of ciprofloxacin as a model drug.
Article
Materials Science, Multidisciplinary
Somayeh Saadat Niavol, Abbas Bagheri Khatibani, Seyedeh Faezeh Hashemi Karouei, Seyede Azadeh Hejazi Juybari, Hossain Milani Moghaddam
Summary: In this study, mesoporous Zn2SnO4 nanostructures were prepared by a simple and environmentally friendly hydrothermal method. The nanostructures exhibited various morphologies and were characterized by X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and Brunauer-Emmett-Teller analysis. The selected sample showed promising gas sensing properties, including high sensitivity, fast response time, excellent selectivity, and long-term stability.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Pharmacology & Pharmacy
William M. MacCuaig, Abhilash Samykutty, Jeremy Foote, Wenyi Luo, Alexander Filatenkov, Min Li, Courtney Houchen, William E. Grizzle, Lacey R. McNally
Summary: This study aimed to evaluate the toxicity of 25 nm mesoporous silica nanoparticles (MSNs) after intravenous injection in mice. The results showed minimal toxicity with MSNs coated with chitosan, while MSNs coated with polyethylene glycol (PEG) may exacerbate pre-existing vascular conditions in some cases.
Review
Chemistry, Multidisciplinary
Adriana Mulero-Russe, Andres J. Garcia
Summary: Human intestinal organoids derived from stem cells offer a powerful platform for studying human development, drug testing, and disease modeling. Synthetic hydrogels can support the growth and delivery of these organoids, enhancing their relevance in various applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Arindam Modak, Deepika Gill, Komal Sharma, Vidha Bhasin, Kamal K. Pant, S. N. Jha, Dibyendu Bhattacharyya, Saswata Bhattacharya
Summary: A new microwave route has been developed for the one-pot conversion of pentose and hexose sugars into glycol and hexitol without pressurized hydrogen reactors. The hydrogenolysis of sugars to glycols is achieved using a Ru single atom catalyst on a phosphine-modified silica carrier under mild conditions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jung Tae Park, Juyoung Moon, Gyo Hun Choi, Seung Man Lim, Jong Hak Kim
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2020)
Article
Polymer Science
Byeong Ju Park, Na Un Kim, Chang Soo Lee, Jong Hak Kim
Summary: Alcohol-soluble comb copolymers were synthesized from rubbery POEM and glassy PAcAm, showing high CO2 permeability and CO2/N2 selectivity in a mechanically strong free-standing membrane. The enhanced performance was attributed to an effective CO2-philic pathway for the ethylene oxide group in POEM and prevention of N2 permeability by PAcAm chains.
Article
Engineering, Chemical
Na Un Kim, Jeong-Hoon Kim, Bo Ryoung Park, Ki Chul Kim, Jong Hak Kim
Summary: A series of comb-like copolymers synthesized for solid-state facilitated CO transport membranes showed improved CO/N-2 separation performance with the incorporation of AgBF4 and ionic liquid. Introducing AgBF4 significantly increased interaction energy between the membrane and CO molecules, demonstrating enhanced CO solubility. Performance optimization resulted in high CO/N-2 selectivity and CO permeance, indicating facilitated CO transport.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Chang Soo Lee, Miso Kang, Ki Chul Kim, Jong Hak Kim
Summary: The study successfully fabricated ultra-high permeance thin-film mixed-matrix membranes using highly porous ZIF-8 and a dual-functional imidazole-based comb copolymer. Through optimization of the preparation process, it achieved extremely high CO2 permeance, high CO2/N-2, and CO2/CH4 ideal selectivities.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Andrew Kim, Golap Kalita, Jong Hak Kim, Rajkumar Patel
Summary: The development of high-performance supercapacitors is crucial in meeting the energy demand for portable electronics, electric vehicles, and green energy storage solutions. This review focuses on the use of V2O5/carbon hybrid materials in supercapacitor electrodes, discussing the effects of different synthesis methods and compositions on the structure and electrochemical performance of the composite material.
Article
Engineering, Chemical
Miso Kang, Tea-Hoon Kim, Youn-Sang Bae, Jong Hak Kim
Summary: This study prepared high-performance thin-film mixed-matrix membranes (MMMs) using two different zirconium-based metal-organic frameworks (MOFs) fillers, achieving different CO2 separation performances through different polymer infiltration methods.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Hyo Jun Min, Young Jun Kim, Miso Kang, Chae-Hee Seo, Jeong-Hoon Kim, Jong Hak Kim
Summary: A high-performance, three-dimensional interconnected crystalline elastomeric membrane with enhanced mechanical strength and CO2 separation properties was developed using an amphiphilic crystalline block copolymer and ionic liquid. The membrane achieved exceptional CO2 separation performance while maintaining outstanding mechanical properties, surpassing the performance of other membranes with ILs.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Seol Jang, Jung-Eun Cha, Seung Jae Moon, Justin Georg Albers, Min Ho Seo, Young-Woo Choi, Jong Hak Kim
Summary: Engineering thermoplastics, such as poly(arylene ether sulfone), are commonly synthesized using fluorine-containing monomers. However, this study found that the reactivity was improved when chlorine atoms were used instead of fluorine atoms. The copolymers synthesized with chlorine-containing monomers showed slightly higher solution viscosity and mechanical strength compared to those synthesized with fluorine-containing monomers. Despite this difference, there were no significant variations in the structural, elemental, and chemical properties of the copolymers.
Article
Materials Science, Multidisciplinary
Chang Soo Lee, Hoseok Jang, Jeonghwan Kim, Jong Hak Kim
Summary: In this study, a comb copolymer was synthesized and used as a template to fabricate hierarchically porous TiO2 nanoisland membranes with superior interconnectivity and high water permeability. The resulting membranes exhibited excellent photocatalytic ability and significantly reduced organic fouling. The self-assembled microphase-separated structure and high molecular weight of the comb copolymer contributed to the improved performance compared to traditional Pluronic block copolymers.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Polymer Science
Amir Hossein Mostafavi, Ajay Kumar Mishra, Fausto Gallucci, Jong Hak Kim, Mathias Ulbricht, Anna Maria Coclite, Seyed Saeid Hosseini
Summary: This review introduces various promising chemical and physical surface modification techniques for tailoring the characteristics of thin films and membranes. It focuses on the application of chemical vapor deposition (CVD) techniques and discusses the impact of process parameters on the quality and properties of deposition. The review highlights the significance of CVD-based membranes and thin films for industrial applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Hyo Jun Min, Miso Kang, Youn-Sang Bae, Richard Blom, Carlos A. Grande, Jong Hak Kim
Summary: This study reports low-cost, high-performance thin-film composite mixed-matrix membranes (TFC-MMMs) based on a CO2-philic comb copolymer and an irregular CO2-selective metal-organic framework (MOF). The copolymer effectively covered the MOF particles, resulting in defect-free membranes with excellent CO2 permeance and selectivity, outperforming commercially available products.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Myeong-Hun Hyeon, Hae-Gu Park, Jongmyeong Lee, Chang-In Kong, Eun-Young Kim, Jong Hak Kim, Su-Young Moon, Seok Ki Kim
Summary: A thermally rearranged polybenzoxazole membrane has been developed for selective removal of water in chemical reactions, addressing common challenges in reaction engineering.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Hyo Jun Min, Min-Bum Kim, Youn-Sang Bae, Praveen K. Thallapally, Jae Hun Lee, Jong Hak Kim
Summary: A high-performance thin-film composite mixed-matrix membrane (TFC-MMM) was successfully fabricated using a rubbery comb copolymer and metal-organic framework MOF-808 nanoparticles, resulting in higher permeance and selectivity for gas separation.
Article
Chemistry, Multidisciplinary
Cheol Hun Park, Eun Min Go, Kyung Min Lee, Chang Soo Lee, Sang Kyu Kwak, Jong Hak Kim
Summary: A novel formation mechanism of 3D polymer nanosheets via facile solution casting using a comb copolymer has been reported in this study. The composition of the comb copolymer can be controlled to yield nanosheets with different properties, and the structure exhibits substrate independence. The obtained polymer nanosheets were utilized as templates for inorganic nanosheets with promising electronic and electrochemical applications.
Article
Chemistry, Physical
Emma Freeman, Santosh Kumar, Veronica Celorrio, Min Su Park, Jong Hak Kim, David J. Fermin, Salvador Eslava
SUSTAINABLE ENERGY & FUELS
(2020)
