Article
Polymer Science
Goretti Arias-Ferreiro, Aurora Lasagabaster-Latorre, Ana Ares-Pernas, Pablo Ligero, Sandra Maria Garcia-Garabal, Maria Sonia Dopico-Garcia, Maria-Jose Abad
Summary: With increasing environmental awareness, lignin is expected to play a crucial role in the development of sustainable and Industry 4.0 materials. This study demonstrates the successful incorporation of low amounts of unmodified lignin into 3D printed light-curable acrylic composites, resulting in composites with smoother surfaces, improved hardness, and higher wettability. The addition of lignin also enhances the dispersion of conductive filler in the composite, leading to reduced surface roughness and increased electrical conductivity.
Article
Electrochemistry
Weibin Jiang, Xiaomo Wen, Youzhou Jiang, Hui Lu, Tao Zhou
Summary: The study shows that the coating modified by PANI/GO has better thermal stability, with T (5%) and T (max) increased by 44 and 5 degrees C, respectively. In exploring the anticorrosion performance of modified coatings in 3.5 wt% NaCl aqueous solution, the coating with 20 wt% GO in PANI/GO exhibits the best corrosion resistance.
Article
Polymer Science
Kohei Takahashi, Kazuki Nagura, Masumi Takamura, Teruya Goto, Tatsuhiro Takahashi
Summary: This study developed an electrically conductive thermosetting resin composite that can transition from liquid to solid state without solvents by adjusting temperature. It has applications as a matrix for carbon fiber reinforced plastics and achieves high electrical conductivity through particle size reduction and temperature optimization.
Article
Construction & Building Technology
Ying Cui, Zhongsheng Tan, Changxin An
Summary: A multi-functional acrylic resin grouting material was studied, which can meet the grouting requirements in different parts of structures through simple material adjustment, possessing flexibility and water swelling performance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Applied
Zhuxin Li, Xue Lv, Zhaoxian Che, Hanlu Liao, Jie Zheng
Summary: This study investigated the crosslinking process of waterborne acrylic resin with total-methyl etherified amino resin to form a film and the pyrolysis kinetics of the resulting product. By analyzing the kinetic parameters and mechanism function of the thermal degradation, it was found that the crosslinked product exhibited improved flexibility, adhesion, and thermal stability.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Composites
Lingyu Tian, Puxuan Zhang, Guijun Xian
Summary: This study investigates the material characterizations of an acrylic resin system, proposes cure kinetics, viscosity, and elastic modulus models, and evaluates the influence of process parameters on the acrylic resin system in the pultrusion die through a case study.
POLYMER COMPOSITES
(2023)
Article
Nanoscience & Nanotechnology
Shaoyun Chen, Lanqin Yu, Shiyu Zhang, Xiaolu Sun, Bo Qu, Rui Wang, Yanyu Zheng, Xiaoying Liu, Wenjie Li, Jianhong Gao, Dongxian Zhuo
Summary: A new 3D printing BDM/ALCR resin with excellent heat resistance and mechanical properties was developed using photosensitive bismaleimide resin and acrylic liquid-crystal resin. The presence of the imide ring and liquid crystal molecules in the resin enhance its overall rigidity and resistance to external forces. The BDM/ALCR resin shows great potential for applications in aerospace, automotive parts, and electronic components.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Polymer Science
Yanyan Zheng, Chongyi Chi, Denglong Chen, Tuer Zeng, Yuxia Zhang, Xiaoyu Lu, Qinhui Chen
Summary: Janus nanosheets (JNSs) with a two-dimensional structure were prepared by phase separation method and modified with polyaniline (PANI) on one side, then composited with epoxy resin (EP). The coatings with PANI@JNSs showed excellent anti-corrosion performance, reaching 5.4 x 10(10) Omega.cm(2) after 35 days of immersion, due to the synergistic effects of physical barrier, interfacial interaction, and passivation effect. Moreover, PANI@JNSs also provided strengthening and toughening effects for the composite coating. JNSs provide a new idea and method for preparing high-performance anticorrosive materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Goretti Arias-Ferreiro, Ana Ares-Pernas, Aurora Lasagabaster-Latorre, Nora Aranburu, Gonzalo Guerrica-Echevarria, M. Sonia Dopico-Garcia, Maria-Jose Abad
Summary: This study successfully predicted the printability of polyaniline/acrylate formulations using photorheology and Jacobs working curves, confirming the viability of these conductive composites for applications in flexible electronic devices.
Article
Materials Science, Multidisciplinary
Goretti Arias-Ferreiro, Ana Ares-Pernas, Aurora Lasagabaster-Latorre, M. Sonia Dopico-Garcia, Pablo Ligero, N. Pereira, P. Costa, S. Lanceros-Mendez, Maria-Jose Abad
Summary: The design of suitable materials for high sensitivity and flexibility pressure sensors in wearable electronics is still challenging. In this study, a flexible and portable pressure sensor based on PANI/Lignin/acrylate is developed. The optimized photoinitiator and presence of lignin in the filler improve the printability and capacitive response of the sensor. The proposed sensor exhibits a sensitivity of 0.012 kPa(-1) in a linear range of 0-10 kPa with only 3.5 wt% PANI.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Polymer Science
Chong Gao, Hongbo Gu, Ai Du, Heng Zhou, Duo Pan, Nithesh Naik, Zhanhu Guo
Summary: Polyaniline (PANI) as a polymeric catalyst exhibits outstanding efficiency in the curing process of phthalonitrile resin, with triazine structure being the main curing product, confirmed by FTIR spectra. The cured PANI/phthalonitrile resin shows high char yield and improved hardness compared to regular amine catalyst/phthalonitrile resin.
Article
Polymer Science
Luisa M. Valencia, Miriam Herrera, Maria de la Mata, Jesus Hernandez-Saz, Ismael Romero-Ocana, Francisco J. Delgado, Javier Benito, Sergio Molina
Summary: Polymer nanocomposites have great potential in various fields, especially electrically conductive and semiconductor materials, which are attracting attention for biomedical, optoelectronic, and sensing applications. By using metallic nanoparticles as nanoadditives, researchers have successfully increased the electrical conductivity of acrylic resin nanocomposites. They have also developed a method to enhance the density of silver nanoparticles by using different solvents, leading to improved electrical behavior. The fabricated nanocomposites with high density of silver nanoparticles show significant increase in electrical conductivity, reaching the semiconductor regime. The use of auxiliary solvents during the printing process affects the mechanical properties and degree of cure of the nanocomposites. These nanocomposites prepared by this method hold promise for electronic applications.
Article
Chemistry, Multidisciplinary
Ahmad Ainurofiq, Yuniawan Hidayat, Eva Y. P. Lestari, Mayasri M. W. Kumalasari, Syaiful Choiri
Summary: This study successfully developed a nanocrystal formulation incorporating resveratrol into a soluble mesoporous carrier using a quality-by-design paradigm and rational screening design. The main factors affecting the critical quality attributes of the formulation were studied and optimized using statistical techniques.
Article
Engineering, Chemical
Zhongwei Chen, Yangyang Xu, Yuan Yu, Tingting Chen, Qingwu Zhang, Changxin Li, Juncheng Jiang
Summary: The incorporation of expandable graphite and PANI@Fe2O3 significantly enhances the flame retardant activity of epoxy resin composite, forming a laminated carbon layer and increasing the limit oxygen index. Additionally, it reduces total heat release and total smoke release, while lowering surface resistivity without compromising performance.
Article
Chemistry, Applied
Liangsen Liu, Mingyue Zhao, Xiaoyuan Pei, Shengkai Liu, Shigang Luo, Minjie Yan, Ruiqi Shao, Ying Sun, Wen Xu, Zhiwei Xu
Summary: This study designed and prepared a new epoxy resin anti-corrosion coating, which overcame the shortcomings of traditional reinforcement materials. The addition of PANI@SiO2 nano-fillers significantly improved the corrosion resistance of epoxy resin, showing excellent performance in stress corrosion and electrochemical corrosion.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Gheorghe Ilia, Vasile Simulescu, Ramona Gheonea, Eleonora Crasmareanu, Iosif Hulka
Summary: This study describes the synthesis of novel hybrid materials by grafting phenyl phosphinic acid onto different metal oxide surfaces (V2O5, ZrO2 and SnO2) using a reactive milling process in the solid phase. The grafted materials were characterized using FTIR, TGA, SEM and EDX methods, showing improved thermal stability and presence of phosphorus and metal elements (Zr, V and Sn).
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Aurelia Visa, Nicoleta Plesu, Bianca Maranescu, Gheorghe Ilia, Ana Borota, Luminita Crisan
Summary: The study found that PMG and VPA act as mixed-type inhibitors in 3% NaCl acidic solution, effectively inhibiting the corrosion process of carbon steel iron with inhibition rates of approximately 91% and 85% respectively. A synergic effect of chlorine ions was observed in the presence of PMG. Density functional theory was used to determine the adsorption site and various electronic properties of the inhibitors on the metal surface. The experimental and calculated results are in agreement regarding the inhibition behavior and adsorption of PMG and VPA inhibitors.
Article
Polymer Science
Simona Popa, Giannin Mosoarca, Lavinia Macarie, Nicoleta Plesu, Gheorghe Ilia, Milica Tara-Lunga-Mihali
Summary: This paper presents the copolymerization of methyl methacrylate (MMA) with n-butyl acrylate (BA) in a bubble column reactor using benzoyl peroxide as free radical initiator at temperatures exceeding 85 degrees C. The inert atmosphere maintained throughout the reaction and high nitrogen bubble pressure contribute to efficient mixing of the monomers and faster contact of the species, leading to higher conversion rates in a shorter reaction time. The absence of residual monomer in the final product is particularly noteworthy for safety reasons.
Article
Chemistry, Applied
Aurelia Visa, Gheorghe Ilia, Lavinia Lupa, Bianca Maranescu
Summary: A series of coordination polymers based on phosphonates were synthesized through hydrothermal reactions, characterized for crystallinity and thermal stability, and further utilized as adsorbents for the removal of cesium and thallium ions from aqueous solutions. Empirical isotherms were used to determine the maximum adsorption capacity of the studied polymers and interpret the results obtained in the equilibrium study.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Review
Sport Sciences
G. Ilia, V Simulescu, P. Merghes, N. Varan
Summary: Honey, as a healthy natural product, offers numerous advantages and health benefits such as antioxidant, antibacterial, antiseptic, and antifungal properties. Due to these properties and benefits, an alternative medicine branch called apitherapy was developed based on honey.
Article
Biochemistry & Molecular Biology
Alin Constantin Murariu, Lavinia Macarie, Luminita Crisan, Nicoleta Plesu
Summary: Graphene and graphene oxide can be used to enhance the properties of polyurethane coatings, particularly in terms of corrosion resistance. This study used ultrasound cavitation technique to disperse graphene oxide nanosheets in polyurethane resin, resulting in a composite coating that effectively protects the substrate. The addition of graphene oxide significantly improved the physical properties of the coatings and showed promising anticorrosion performance.
Review
Chemistry, Multidisciplinary
Gheorghe Ilia, Petru Merghes, Narcis Varan, Vlad Chiriac, Vasile Simulescu
Summary: Zirconium is a heat and corrosion resistant transition metal used in surgical instruments and as a hardening agent in steel alloys. Zirconyl chloride octahydrate is commonly used as a zirconium source for synthesizing zirconium phosphates and zirconium phosphonates. These compounds show potential for various applications, including catalysis, medicine, ion-exchange materials, and proton exchange membrane fuel cells.
Article
Biochemistry & Molecular Biology
Marko Marganovici, Bianca Maranescu, Aurelia Visa, Lavinia Lupa, Iosif Hulka, Vlad Chiriac, Gheorghe Ilia
Summary: This paper presents the adsorption properties of two coordination polymers for the removal of cadmium and lead ions from aqueous solutions. The studied materials show a higher affinity for cadmium ions, with CoCEPPA exhibiting the best adsorption performance. Kinetic and equilibrium data were fitted using pseudo-second-order kinetics and Langmuir isotherm, respectively.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Biochemistry & Molecular Biology
Gheorghe Ilia, Vasile Simulescu, Nicoleta Plesu, Vlad Chiriac, Petru Merghes
Summary: Carbonyl olefinations are important organic syntheses for forming C=C bonds, often with high yields and excellent stereoselectivity. The Wittig reaction is a well-known carbonyl olefination method, involving the reaction between an aldehyde or ketone and a Wittig reagent. The use of ultrasound in these reactions, including modified Wittig syntheses, has been studied for green synthesis and improved yields and reaction times.
Article
Polymer Science
Petru Merghes, Narcis Varan, Gheorghe Ilia, Iosif Hulka, Vasile Simulescu
Summary: In this study, the SEM-EDX method was used to investigate the structure and morphology of organic-inorganic hybrids containing zirconium, boron, and phosphorus compounds synthesized by the sol-gel method. The obtained hybrids showed high thermal stability and insolubility, making them suitable for applications at high temperatures. The hybrids exhibited complex 3D structures and formed organic-inorganic networks with various bridges, holding potential in catalysis, medicine, agriculture, energy storage, fuel cells, sensors, electrochemical devices, and supramolecular chemistry.
Article
Materials Science, Composites
Nicoleta Plesu, Lavinia Macarie, Milica Tara-Lunga Mihali, Bianca Maranescu, Aurelia Visa, Dorin Jurcau
Summary: Polyester coatings containing metal-organic framework (MOF) corrosion inhibitors were studied for their ability to protect carbon steel. The incorporation of these inhibitors into the coating enhanced the corrosion protection of the carbon steel compared with uncoated steel and polyester alone. The synthesis of the polyester coating using microwave irradiation showed improved anticorrosive properties.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Polymer Science
Petru Merghes, Gheorghe Ilia, Iosif Hulka, Vlad Chiriac, Narcis Varan, Vasile Simulescu
Summary: In this study, novel organic-inorganic hybrid materials containing boron, zirconium, and phosphorus were synthesized using the sol-gel method. Zirconium compounds have been widely used in medicine, while boron has the ability to form stable covalently bonded molecular networks and exhibits mixed metallic and nonmetallic properties. The structure of these hybrid compounds involves the connection of zirconium, boron, and phosphorus atoms via an oxygen atom.
Article
Chemistry, Inorganic & Nuclear
Montse Bazaga-Garcia, Alvaro Vilchez-Cozar, Bianca Maranescu, Pascual Olivera-Pastor, Marko Marganovici, Gheorghe Ilia, Aurelio Cabeza Diaz, Aurelia Visa, Rosario M. P. Colodrero
Summary: In this study, three new coordination polymers were synthesized and characterized, with one of them prepared using microwave-assisted synthesis resulting in shorter synthesis times. The crystal structures were solved using ab initio calculations, showing unique topologies and molecular arrangements. Preliminary studies on the electrocatalytic properties of some compounds were conducted, demonstrating good performance in the oxygen evolution and reduction reactions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Gheorghe Ilia, Vasile Simulescu, Iosif Hulka
Summary: In this study, novel organic-inorganic hybrids containing zirconium and phosphorus compounds were synthesized using the sol-gel method. Introduction of alcohols with long hydrocarbon chains altered the reaction kinetics, leading to faster reaction times.
COLLOID AND POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
