Article
Chemistry, Multidisciplinary
Ekkachai Martwong, Yvette Tran
Summary: The study reports on the synthesis and temperature-responsive properties of poly(PEGMA) hydrogel thin films. Surface-attached poly(PEGMA) hydrogel films were synthesized using a simple, versatile, and well-controlled thiol-ene click reaction method, with the transition temperature finely tunable by adjusting the number of PEG units. The LCST properties of the hydrogel films are not sensitive to salt, holding promise for applications in biology such as injectable hydrogels, drug delivery systems, microfluidic valves, and flow switches for biotechnologies.
Article
Chemistry, Physical
Wenwen Luan, Chunyu Wang, Zuoxiang Zeng, Weilan Xue, Fei Liang, Yu Bai
Summary: In this study, samples of PVB with specific characteristics were prepared and their intrinsic viscosities were measured in ethanol/water solutions. The expansion factors of PVB molecular chains were calculated and related thermodynamic parameters were derived from the data, indicating a decrease in quality of mixed solvents with increasing temperature and water volume fractions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Polymer Science
Wasana Nonkrathok, Tatiya Trongsatitkul, Nitinat Suppakarn
Summary: In this study, the shape memory properties of poly(lactic acid) (PLA)/poly(ethylene glycol) (PEG) blends were improved by adding maleic anhydride-grafted poly(lactic acid) (PLA-g-MA) as a compatibilizer. The PLA-g-MA improved interfacial adhesion between phases and promoted chain entanglement, leading to enhanced mechanical properties and shape fixity performance. The compatibilized blend containing 2 wt% PLA-g-MA exhibited the best shape fixity and recovery performance.
Article
Polymer Science
Hailing Liu, Logan Mulderrig, Daniel Hallinan, Hoyong Chung
Summary: This study demonstrates the potential of lignin-graft-polymers in solid electrolyte applications, successfully completing the rare synthesis and conductivity testing of lignin, showing promising results in terms of conductivity and temperature.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Gregory W. Peterson, Thomas H. Epps
Summary: The effect of seeding PEO solutions with zinc acetate and zinc chloride on solution properties and the ability to electrospin nanofibers was investigated. The addition of zinc salts had varying effects on solution viscosity and electrical conductivity, resulting in changes in fiber morphology. The presence of salts increased the electrical conductivity of the solution, allowing for electrospinning at lower polymer concentrations.
Article
Chemistry, Physical
Arantxa Arbe, Goran J. Nilsen, Mark Devonport, Bela Farago, Fernando Alvarez, Jose A. Martinez Gonzalez, Juan Colmenero
Summary: By using time-of-flight neutron spectroscopy with polarization analysis, this study separated coherent and incoherent contributions to the scattering of deuterated tetrahydrofuran. The comparison with water reveals similar phenomenology, indicating the influence of inter-molecular interactions on dynamics. The study shows a crossover in the structural relaxation and different characteristic times for collective and self-motions compared to water.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
P. Lokanatha Reddy, S. K. Khadheer Pasha
Summary: Solution casting technique was used to prepare PVA/PEDOT:PSS/CuO nanocomposites. The structural, morphological, and thermal properties of the nanocomposites showed good interaction between the polymer blend and the CuO nanoparticles. The nanocomposite with 15% CuO nanoparticles exhibited the highest dielectric constant, dielectric loss, and AC conductivity, indicating its potential for energy storage applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Chemical
Weijie Kou, Ruixin Lv, Shengwu Zuo, Zhihao Yang, Jiajia Huang, Wenjia Wu, Jingtao Wang
Summary: Poly (ethylene glycol) grafted polymer-like quantum dots (PPQDs) with an average diameter of around 2.5 nm were synthesized as nanofillers for hybrid polymer electrolytes, significantly enhancing ion conduction and stability. The efficient ion-conductive networks constructed by PPQDs and PEO showed a vertical Li+ conduction of 5.53 x 10(-5) S cm(-1) at 30 degrees C, 16 times higher than that of PEO electrolyte, demonstrating great potential for all-solid-state lithium batteries.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Steven W. Rick
Summary: A thermal responsive block copolymer made up of ethylene oxide (EO) and propylene oxide (PO) blocks was simulated at different temperatures, showing aggregation behavior in dilute solution that is stabilized by hydrophobic contact of propylene oxide methyl groups. The study compared the aggregation tendency of different polymers in solution and highlighted the importance of hydrophobic interactions in the aggregation process.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Polymer Science
Aniket Raje, Prokopios Georgopanos, Joachim Koll, Jelena Lillepaerg, Ulrich A. Handge, Volker Abetz
Summary: The study used foam extrusion to produce highly porous foams from a blend of polyethersulfone (PESU) and poly(ethylene glycol) (PEG), reducing the processing temperature by approximately 100°C and achieving energy efficiency and sustainability. The resulting extruded polymer foam had a porosity of approximately 51% and an average foam cell diameter of 5 μm.
Article
Polymer Science
Naofumi Naga, Mitsusuke Satoh, Tomoyuki Magara, Kumkum Ahmed, Tamaki Nakano
Summary: Michael-addition reaction between multifunctional-acetoacetate, meso-erythritol tetra-acetoacetate (ETAA) or dsorbitol hexa-acetoacetate (SHAA), and poly(ethylene glycol) diacrylate (PEGDA) has been investigated to obtain porous polymers with controllable diameter and morphology. The porous polymers are soft, flexible, and have high affinity with various solvents.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Omer Suat Taskin, Neslihan Yuca, Joan Papavasiliou, George Avgouropoulos, Erhan Karabayir, Mehmet Emre Cetintasoglu, Emre Guney, Ilknur Kalafat, Busra Cetin, Emre Guzel, Osman Urper, Kaiying Wang
Summary: The demand for lithium-ion batteries has increased in recent years, but the battery life provided by suppliers is insufficient. As a result, the development of new generation materials has become crucial. In this study, a new polymer binder with conductive anthracene units and flexible ethylene glycol lateral groups was developed, and it showed promising results in increasing the specific capacity of lithium-ion battery electrodes.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Irina M. Le-Deygen, Oxana E. Musatova, Victor N. Orlov, Nikolay S. Melik-Nubarov, Irina D. Grozdova
Summary: This study provides the first evidence of the interaction between PEG and HA in aqueous solutions. The binding of PEG to HA requires multiple free primary hydroxyls regularly distributed along the polysaccharide chain. Additionally, PEG-induced compaction of HA may be related to changes in plasma membrane properties and resealing of mechanical injuries.
Article
Polymer Science
Masaaki Okihara, Kohei Okuma, Akifumi Kawamura, Takashi Miyata
Summary: In this study, a photoresponsive tetra-PEG gel that undergoes a phase transition from a sol to a gel state in response to light is reported. The gelation of the tetra-PEG containing photodimerization groups was investigated by varying the polymer concentration and light irradiation time, showing that the elastic modulus of the gel increases with the increase in light irradiation time.
Article
Biochemistry & Molecular Biology
Shuaishuai Yuan, Xiuxia Sun, Yong Shen, Zhibo Li
Summary: This study developed a new bioactive wound dressing by incorporating PEG and ZnO nanoparticles into the P4HB matrix. In vitro and in vivo experiments demonstrated that the bioactive P4HB/PEG/ZnO dressings have synergistic hemostatic and antibacterial effects, making them potential candidates for clinical applications.
MACROMOLECULAR BIOSCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Mohammad Taghi Taghizadeh, Solmaz Zeynali, Habib Ashassi-Sorkhabi, Abbas Mehrdad
Summary: TiO2/AgBr modified with PANI and RGO as a visible light-driven photocatalyst has shown significantly enhanced photocatalytic activity, with a synergistic enhancement attributed to increased light absorption and promoted charge separation. The formation of a p-n-n heterojunction was identified as a key factor in the improved performance. Additionally, (OH)• and O•2- were determined as the main active species in the photodegradation experiments, highlighting the photocatalytic mechanism involved.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Chemical
Narmin Noorani, Abbas Mehrdad
Summary: Biocompatible choline-based amino acid ionic liquids were synthesized and studied for their carbon dioxide sorption performance, with glycinate anion showing the best results. The study also confirmed the sorption energy of CO2 onto these ionic liquids using density functional theory calculations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Abbas Mehrdad, Sahar Ehsani-Tabar
Summary: The study investigated the solute-solvent and solute-solute interactions in mixtures of ibuprofen with water and 1-propanol. Results showed that solute-solvent interactions decrease with increasing temperature, and also decrease with decreasing weight fraction of 1-propanol, possibly due to preferential solvation of ibuprofen with 1-propanol.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Polymer Science
Narmin Noorani, Abbas Mehrdad
Summary: This study evaluates the CO2 adsorption performance of several poly(ionic liquid)s and confirms that CO2 adsorption is exothermic and based on physisorption. Experimental and computational analyses show that the interaction between P[VBIm][SCN] and CO2 is stronger compared to other poly(ionic liquid)s.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Thermodynamics
Narmin Noorani, Abbas Mehrdad, Iraj Ahadzadeh
Summary: In this study, eight amino acid-based ionic liquids were synthesized and characterized, with arginate-anion containing AAILs showing the highest CO2 absorption capacity. Experimental and theoretical calculations were used to analyze the absorption process in depth.
FLUID PHASE EQUILIBRIA
(2021)
Article
Thermodynamics
Narmin Noorani, Abbas Mehrdad, Rana Zarei Diznab
Summary: Vinyl imidazolium amino acid ionic liquids (AAILs) based on seven amino acids were synthesized and used as carbon dioxide absorbers. The CO2 absorption capacity of these AAILs was affected by pressure and temperature, with [VBIm][L-Arg] demonstrating the highest absorption capacity.
FLUID PHASE EQUILIBRIA
(2022)
Article
Chemistry, Physical
Sahar Ehsani-Tabar, Abbas Mehrdad, Ali Shayanfar
Summary: The salt effect of sodium chloride, potassium chloride, choline acetate, choline lactate, and choline propionate on ibuprofen in aqueous solutions of 1-propanol was investigated using various methods. It was found that sodium chloride and potassium chloride have a salting-out effect, while choline acetate, choline lactate, and choline propionate have a salting-in effect.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Narmin Noorani, Abbas Mehrdad, Iraj Ahadzadeh, Parinaz Shajari Sefidehkhan
Summary: Six polyvinyl chloride-g-polyionic liquid ionomers were synthesized and characterized for carbon dioxide gas separation. The results showed that PVC-g-P[VHIm][SCN] exhibited superior performance in CO2 separation, as confirmed by experimental data and theoretical modeling.
JOURNAL OF POLYMER ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Narmin Noorani, Abbas Mehrdad
Summary: The study investigated the solubility of carbon dioxide in a series of ionic liquids and found that the cation alkyl chain length and the type of anion were the main factors affecting solubility, with solubility increasing with alkyl chain length and depending on anion selection.
AUSTRALIAN JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Environmental
Narmin Noorani, Abbas Mehrdad
Summary: In this study, seven biocompatible poly(ionic liquid)s based on amino acids (AAPIL) were synthesized and their CO2 absorption capacities were investigated. It was found that AAPILs have higher adsorption capacity than normal ionic liquids, mainly due to the amino groups attached to the cation. The results showed that CO2 absorption capacity increases with increase in pressure and reduce in temperature, and the number of amino groups in the AAPILs is responsible for their absorption capacities.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Engineering, Chemical
Narmin Noorani, Abbas Mehrdad, Masih Darbandi
Summary: This research investigates the CO2 adsorption performance of Cu2(BDC)2 (Cu-MOF) and Cu3(H2N-BDC)2 (Cu-MOF-NH2) impregnated with cholinium-amino acid ionic liquids. The results reveal that Cu-MOF-NH2 has a 2.5 times higher CO2 adsorption than Cu-MOF, and the [Cho][Arg]/Cu-MOF has a 2.97 times higher CO2 adsorption than Cu-MOF, which helps guide the logical design of new mixtures for gas separation applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Multidisciplinary Sciences
Narmin Noorani, Abbas Mehrdad
Summary: To enhance the CO2/N-2 separation performance of MOFs, the researchers impregnated amine functionalized deep eutectic solvents (DESs) into NH2-MIL-53(Al). The results showed that the DESs/NH2-MIL-53(Al) composite had higher CO2 adsorption capacity and provided guidance for the design of gas separation applications.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Narmin Noorani, Amin Moghaddasfar, Abbas Mehrdad, Masih Darbandi
Summary: With the rapid industry development, air pollution has increased due to the increase in carbon dioxide. Adsorbents, with their advantages of reusability, low cost, easy operation, and scale-up synthesis, are considered a good option for capturing CO2. This study reports the synthesis of mesoporous cobalt oxide nanoparticles in deep eutectic solvent using the ultrasound-assisted method to improve CO2 adsorption performance. The results show that the adsorption performance of the synthesized nanoparticles in deep eutectic solvent is better than those synthesized in water, and the CO2 adsorption process is exothermic.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Narmin Noorani, Behrad Barzegar, Abbas Mehrdad, Hassan Aghdasinia, Seyed Jamaleddin Peighambardoust, Hossein Kazemian
Summary: This study focuses on enhancing the CO2 adsorption capacity of activated carbon composites by incorporating metal oxides. AC/MgO and AC/Fe3O4 composites showed adsorption capacities of 38.567 mmol g(-1) and 71.963 mmol g(-1), respectively, at 298.15 K and 5 bar. The adsorbents maintained adsorption capacities of 94.1%, 97.9%, and 96.5%, respectively, after six consecutive cycles. These findings highlight the promising potential of AC/MgO composites as effective adsorbents for CO2 capture applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Narmin Noorani, Abbas Mehrdad
Summary: Cholinium-amino acid ionic liquids were synthesized using six amino acids and tested for their carbon dioxide absorption capacity. The results show that more amino groups lead to higher absorption capacity, making them potential candidates for carbon dioxide capture.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
