Article
Engineering, Environmental
Drishna Sainju, Robert Lucas, Adam Le Gresley
Summary: This study reports for the first time the application of Nuclear Magnetic Resonance (NMR) method to identify, characterize and quantify water-soluble polymers (WSPs) in real-world samples. The method was successfully used to detect and analyze polyethylene glycol (PEG), polyacrylamide (PAM) and polyacrylic acid (PAA) in different river water samples. This work is of great importance for future studies on evaluating the biological impact of WSPs on aquatic organisms.
Article
Materials Science, Composites
Jan Sher Khan, Rizwan Akram, Mozaffar Hussain, Saima Rafique, Farrukh Bashir Kayani, Anis Ur Rehman
Summary: Composite fibers of bismuth telluride with polyaniline and polyvinylpyrrolidone were synthesized via electrospinning. The morphology and surface morphology of the fibers were studied using scanning electron microscopy. The X-ray diffraction and Fourier transform infrared spectroscopy confirmed the increase in crystalline phase and revealed the influence of functional groups. The thermogravimetric analysis and diffuse reflectance spectroscopy showed the thermal stability and decreased bandgap of the composite fibers.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Melia Lacaze, Nathalie Saffon-Merceron, Fabien Silly, Jacques Bonvoisin
Summary: Two new iodo derivatives of bis-salphen zinc complexes have been synthesized and characterized, with complex 1 also undergoing X-ray single crystal diffraction analysis. These compounds show great potential for generating 2D covalent organic nanoarchitecture.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Polymer Science
Karen Barrios Tarazona, Gilberto Ramos-Rivera, David Suleiman
Summary: This study focuses on the synthesis of sulfonated amine block copolymers and their impact on the morphology and transport properties of polymeric membranes for chemical protective clothing (CPC). The copolymers were prepared using specific monomers and sulfonated by chemical grafting. Various characterization techniques were used to analyze the changes in the membranes. The results show that the synthesized copolymers lacked phase segregation due to low sulfonation, leading to a low water/DMMP selectivity. Blended membranes with sulfonated poly(styrene-isobutylene-styrene) (SIBS) improved breathability and achieved the desired water vapor transport rate limit.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Rania Badry, Hend A. Ezzat, Sherif El-Khodary, Mohamed Morsy, Hanan Elhaes, Nadra Nada, Medhat Ibrahim
Summary: In this study, solid polymer electrolytes based on CMC with the addition of acetic acid and glycerol were prepared, characterized using various techniques, and tested for their electrical properties. The results showed that under certain conditions, these electrolytes exhibited high ionic conductivity and thermal stability.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Polymer Science
Ibrahim Dubdub
Summary: In this study, thermal cracking of plastic wastes, including polystyrene (PS), low-density polyethylene (LDPE), and polypropylene (PP), was investigated using thermal analysis technique thermogravimetric analyzer (TGA). An artificial neural network (ANN) model was developed to predict the weight fraction of mixed polymers, and the results showed good agreement between the actual and predicted values, indicating the high efficiency of the model in simulating new data.
Article
Polymer Science
You Shu, Qionglin Luo, Mingliang Wang, Yuejun Ouyang, Hongwei Lin, Liping Sheng, Shengpei Su
Summary: This study demonstrated that the introduction of L-PVAc into PLA can significantly improve the mechanical and thermal properties of the composites. Furthermore, at a L-PVAc content of 20.0 wt%, the impact strength, elongation at break, glass transition temperature, melting temperature, and degree of crystallinity of the composites were significantly increased compared to pure PLA.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Farzin Azimpour-Shishevan, M. A. Mohtadi-Bonab, Hamit Akbulut
Summary: This study investigates the effects of carbon nanotubes (CNTs) and graphene platelets (GPLs) on the characteristics of carbon/basalt fiber reinforced intra-ply hybrid composites. The results show that the addition of carbon-based nanoparticles improves the properties of the composites, and the response of the composites is directly proportional to the addition ratio of the carbon-based nanoparticles.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Ahmet Akar, Nilgun Kizilcan, Yusuf Yivlik, Derya Onen
Summary: Cyclohexanone-formaldehyde resin and acetophenone-formaldehyde resin were modified in situ with sodium alendronate and nanocomposites containing sepiolite and montmorillonite were successfully produced. The modified resins and their nanocomposites were used to produce reactive non-toxic fire retardant rigid polyurethane foam, with good flame retardant properties and self-extinguishing characteristics observed in testing. The study demonstrated the potential for using alendronic acid-modified resins and nanoclays for developing flame retardant polyurethane materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Charles F. Croft, M. Ines G. S. Almeida, Spas D. Kolev
Summary: In this study, micro polymer inclusion beads (mu PIBs) containing D2EHPA were characterized by TGA for the first time, and their extraction performance for La3+ was evaluated. The TGA method was used to determine the exact composition of mu PIBs, and it was found that PVC- or PVDF-HFP-based mu PIBs underwent negligible D2EHPA leaching during fabrication. The presence of Na+ in mu PIBs had a negative impact on the extraction of La3+, which could be overcome by washing the mu PIBs with 1 M sulfuric acid.
Article
Chemistry, Physical
Ibrahim Dubdub
Summary: This paper aims to investigate the kinetics of polypropylene (PP) polymer pyrolysis using thermogravimetric analysis (TGA). The results show that the activation energy values for PP polymer pyrolysis at different conversions are in good agreement with the values obtained from four model-free methods. Additionally, the most controlling reaction mechanism identified using Criado's method is the geometrical contraction models-cylinder model.
Article
Materials Science, Composites
Zheng Liu, Junliang Zhang, Yusheng Tang, Jianbo Xu, Hao Ma, Jie Kong, Junwei Gu
Summary: Bisphenol A dicyanate ester (BADCy) was used as the matrix, poly (p-phenylene-2, 6-benzobisoxazole) (PBO) fibers as reinforcement, and synthesized fluorine-containing linear PBO precursor (preFLPBO) as the interfacial compatibilizer to prepare PBO fibers/FLPBO-m-BADCy wave-transparent laminated composites. The introduction of fluorine groups and PBO-like structures improved dielectric properties and enhanced interfacial compatibility, leading to better mechanical properties in the composite materials.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Di Yang, Bo Yang, Zongjun Jiang, Hao Zhang, Yin Zhong, Yang Shao
Summary: Research has found that adjusting the content of hydrophobic monomers can effectively improve the salt tolerance of polymers. Polymers with higher hydrophobic monomer content exhibit better salt tolerance. As the salt content increases, the radius of gyration of the polymers continuously decreases at low hydrophobic monomer contents, while it tends to increase and then decrease at high hydrophobic monomer contents. Increasing hydrophobic monomer content enhances the association effect of polymers, forming more hydrophobic regions and improving viscosity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Polymer Science
Zaid Alhulaybi, Ibrahim Dubdub, Mohammed Al-Yaari, Abdulrahman Almithn, Abdullah F. Al-Naim, Haidar Aljanubi
Summary: This study aims to build knowledge on the kinetics of PLA pyrolysis using TGA and four model-free methods (Friedman, FWO, KAS, and Starink), for application in the textile and food packaging fields. The obtained activation energies of PLA pyrolysis by the model-free methods were in good agreement, ranging from 97 to 109 kJ/mol. The best controlling reaction mechanism of PLA pyrolysis was identified as the geometrical contraction model (R2) through the Criado and Coats-Redfern models.
Article
Polymer Science
Melinda Einsla, Vlad Telyatnikov, Johnpeter Ngunjiri, Sipei Zhang, Gary Dombrowski
Summary: In this study, a series of soluble-shell polymers were synthesized using an acrylic composition with an end-chain alkoxysilane crosslinkable moiety. The crosslinking was achieved by using MPTMS as a chain transfer agent, which effectively reduced the molecular weight of the acrylic. The resulting dried films showed improved mechanical properties and thermo-mechanical stability.
Article
Environmental Sciences
Sultan Karagoz, N. Burak Kiremitler, Menekse Sakir, Samaa Salem, M. Serdar Onses, Ertugrul Sahmetlioglu, Ahmet Ceylan, Erkan Yilmaz
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2020)
Article
Chemistry, Analytical
Arzu Yay, Mustafa Serdar Onses, Ertugrul Sahmetlioglu, Ayse Ceyhan, Sami Pekdemir, Gozde Ozge Onder, Gulay Sezer, Zeynep Soyer Sarica, Funda Aydin
Article
Multidisciplinary Sciences
Abdullah Taner Bisgin, Yavuz Surme, Mustafa Ucan, Ibrahim Narin
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE
(2020)
Article
Chemistry, Analytical
Yeliz Camci, Abdullah Taner Bisgin, Yavuz Surme, Mustafa Ucan, Ibrahim Narin
JOURNAL OF ANALYTICAL CHEMISTRY
(2020)
Article
Nanoscience & Nanotechnology
Sultan Karagoz, N. Burak Kiremitler, Gokhan Sarp, Sami Pekdemir, Samaa Salem, Ayse Gencay Goksu, M. Serdar Onses, Ibrahim Sozdutmaz, Ertugrul Sahmetlioglu, Ergun Samet Ozkara, Ahmet Ceylan, Erkan Yilmaz
Summary: This study explores the potential of a multifunctional electrospun nanofiber material (PMMA/ZnO-Ag NFs) for protective mat and clothing applications, with capabilities including antibacterial, antiviral, photocatalytic, and Raman scattering analysis. The material provides both passive and active protection pathways along with sensing capabilities to detect trace pollutants on the nanofiber.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Spectroscopy
Donay Yuvali, Muslum Seyhaneyildizi, Mustafa Soylak, Ibrahim Narin, Erkan Yilmaz
Summary: A new deep eutectic solvent (DES) composed of tetrabuthylammonium bromide (TBABr) and 1-octanol at a 1:2 molar ratio was prepared and characterized, and used as an extraction solvent for E127 in blood, urine, pharmaceutical tablet, and syrup samples. The combination of DES-UA-LLME and UV-Vis spectrophotometric detection allows for accurate determination of E127 in various sample matrices.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Materials Science, Ceramics
Hilal Pecenek, Sevda Yetiman, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study investigates the effect of carbon nanomaterials and MXene addition on MnO2 based supercapacitor electrodes, and finds that MXene based composite materials exhibit the highest specific capacitance and exceptional cycling efficiency. The favorable interaction between MnO2 and nanoscale materials enhances conductivity and surface area, leading to superior supercapacitor efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Hilal Pecenek, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This research reports a facile and rational synthesis procedure to fabricate a high-performance supercapacitor electrode. The NiO/MnO2/CNT composite exhibits a wonderfully stratified flower-like morphology and shows high specific capacitance and good cyclic stability.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Energy & Fuels
Sevda Yetiman, Hilal Pecenek, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study presents the microwave-assisted preparation of cobalt oxide-based nanocomposite electrodes doped with carbon dots and reduced graphene oxide. The electrodes with carbon dots exhibit the highest specific capacitance and good rate capability, even at high current densities. The optimized electrodes are used to fabricate a symmetric supercapacitor with high specific capacitance and long cycle life.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Analytical
Fatma Cidem, Donay Yuvali, Mustafa Soylak, Ibrahim Narin, Erkan Yilmaz
Summary: In this study, a method combining deep eutectic solvent-based ultrasound-assisted liquid-liquid microextraction (DES-UA-LLME) and high-performance liquid chromatography-ultraviolet visible detection system was developed for accurate and sensitive determination of ibuprofen in various samples. The developed method offers the advantage of determining ibuprofen without interfering with the matrix environment of different samples.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Hilal Pecenek, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study reports a compressible supercapacitor electrode with high performance and compressibility, suitable for flexible electronics. The electrode is prepared by coating NiO/MnO2/CNT composite onto a sponge, demonstrating excellent cycling stability and mechanical stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Sevda Yetiman, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: Carbon-based materials with porous and layered forms are important for renewable energy storage. In this study, g-C3N4@ZIF-67 composite material was synthesized and showed excellent performance as a supercapacitor electrode.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Sevda Yetiman, Sultan Karagoz, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study presents the rational design and synthesis of a hybrid material (ZIF-8@BiPO4) with dual functionality: an outstanding supercapacitor electrode and an excellent photocatalyst. The ZIF-8@BiPO4 hybrid structure exhibited considerably higher specific capacitance than pure BiPO4 and ZIF-8. An asymmetric supercapacitor (ASC) device fabricated with ZIF-8@BiPO4 as the cathode showed outstanding cycling stability and energy/power density. Additionally, ZIF-8@BiPO4 demonstrated excellent photocatalytic activity.
Article
Chemistry, Physical
Ahmet Ceylan, Sultan Karagoz, Serap Tekin, Nilgun Kayaci, Sami Pekdemir, Samaa Salem, Eda Mert Gokduman, Ebru Demirci, Ertugrul Sahmetlioglu, M. Serdar Onses, N. Burak Kiremitler, Erkan Yilmaz
Summary: The COVID-19 outbreak has highlighted the need for advancements in protective clothing technology. This study presents a fabrication method for multifunctional nanofiber mats that can kill bacteria and viruses, self-clean, and detect pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Esra Kilavuz, Ersen Turac, Sedef Ilk, Ertugrul Sahmetlioglu
Summary: In this study, two different boron dipyrromethene (BODIPY)/zinc oxide based P(M1-co-Edot)/ZnO and P(M2-co-Edot)/ZnO nanocomposite copolymer materials were prepared and characterized using various spectroscopic methods. The antibacterial activities of the synthesized nanocomposite films against Gram positive and Gram negative bacteria were investigated, showing higher efficacy against Gram negative bacteria. These results suggest that the synthesized nanocomposites have potential applications as antibacterial electrochromical materials due to their easy production and nontoxic properties.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
