Article
Materials Science, Multidisciplinary
Silvia Pizzimenti, Luca Bernazzani, Maria Rosaria Tine, Valerie Treil, Celia Duce, Ilaria Bonaduce
Summary: This study investigated the curing and aging process of air-drying artist's oil paint. Various analytical techniques were used to study the oxidation process of the oil binder and degradation phenomena of oil paintings. The results indicated that the oil-pigment combination plays a significant role in the oxidation and cross-linking degree of the paint film.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Applied
Magdalena Hubmann, Jonathan M. Curtis
Summary: A biobased alternative has been developed to act as both a reactive accelerant and a viscosity modifier for solvent-free drying oil systems. Ozonized linseed FAME can significantly reduce drying time and viscosity while maintaining high biorenewable content and air-induced polymerization.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Multidisciplinary
Ruiliu Wang, Chaoji Chen, Zhenqian Pang, Xizheng Wang, Yubing Zhou, Qi Dong, Miao Guo, Jinlong Gao, Upamanyu Ray, Qinqin Xia, Zhiwei Lin, Shuaiming He, Bob Foster, Teng Li, Liangbing Hu
Summary: Conventional plastic foams made from fossil-fuel-derived polymers are difficult to biodegrade in nature. This study presents a fast and scalable method to prepare cellulose-graphite foams by cross-linking cellulose fibrils in a metal ions-containing solution, followed by ambient drying. The resulting foams exhibit low density, high compressive strength, and excellent water stability. The cross-linking effect of different metal ions is revealed through density functional theory, showing good agreement with experimental observations. This approach offers a sustainable route for low-cost, environmentally friendly, and scalable foam production for various applications.
Article
Chemistry, Applied
Sofia S. Filippova, Konstantin V. Deriabin, Ekaterina A. Golovenko, Sergey V. Baykov, Nikita S. Antonov, Vadim P. Boyarskiy, Regina M. Islamova
Summary: This study proposes the use of a platinum-based complex to catalyze the hydrosilylation and dehydrocoupling reactions of high molecular weight polysiloxanes. The complex exhibits good thermal stability at elevated temperatures and allows for cross-linking of the polysiloxanes. The coupling patterns were successfully confirmed using NMR spectroscopy.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Ronghai Hu, Dejun Dong, Jielun Hu, Huan Liu
Summary: The objective of this research was to investigate the survival of probiotic bacteria encapsulated in soy protein isolate (SPI) matrix using different encapsulation techniques and the influences of various factors on their survival. The results showed that microcapsules fabricated using SPI-PEC coacervation or TGase induced crosslinking provided good protection to the probiotic cells during gastric digestion, heat/UV treatment and storage. However, the combination of these two modification methods resulted in microcapsules with lower cross-linking degree and loose package structure, leading to negative effects on cell viability during gastric digestion and storage. Among the formulations tested, SPI-PEC microparticles offered the best protection to probiotic cells due to the thermal stability and digestion resistibility of pectin.
FOOD HYDROCOLLOIDS
(2023)
Article
Polymer Science
Yuto Inoue, Takahiro Ishida, Natsuhiro Sano, Tatsuo Yajima, Hiromitsu Sogawa, Fumio Sanda
Summary: Polymeric metal complexes were synthesized and polymerized from borane compounds with different ligands. The BH3 groups were removed from the formed polymers, resulting in polyacetylenes with -PPh2 ligands. These polymers were further coordinated with platinum to form polymeric metal complexes, which exhibited catalytic activity in the hydrosilylation reaction.
Article
Green & Sustainable Science & Technology
Wenlei Xie, Chunli Gao, Jiangbo Li
Summary: Efficient and reusable catalysts are desired for improved biodiesel production, and a solid catalyst was successfully developed by incorporating ZIF-8 MOF into Fe3O4 nanoparticles and encapsulating a vanadium-substituted heteropolyacid. The catalyst showed good magnetic responsiveness and achieved simultaneous transesterification of soybean oil and esterification of free fatty acids, with high conversion rates and good reusability.
Article
Chemistry, Physical
Mihai Mesko, Li Xiang, Scott Bohle, Dong Soo Hwang, Hongbo Zeng, Matthew J. Harrington
Summary: Recent research has found that mussels use vanadium to enhance cohesion in their byssus fibers, rather than solely relying on iron as previously thought. Vanadium is more effective at forming tris-DOPA-metal complexes within the relevant pH ranges for byssus formation and function, especially when starting from the V-III form. Additionally, DOPA-V complexes can form at very low pH values, indicating potential adaptation of the protein sequence for vanadium binding.
CHEMISTRY OF MATERIALS
(2021)
Article
Engineering, Biomedical
Hongxia Zhao, Junwei Liao, Feipeng Wu, Jiahui Shi
Summary: Coating and cross-linking techniques were used to enhance the mechanical strength of porous scaffolds in tissue engineering. Material characterization and cell culture experiments confirmed the good biocompatibility of the scaffolds, suggesting potential for future applications.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Chemistry, Applied
Magdalena Hubmann, Konstantin von Gunten, Daniel S. Alessi, Jonathan M. Curtis
Summary: The study found that adding ELOME to epoxidized linseed oil improved curing and reduced degradation compared to air-dried linseed oil. Additionally, using curcumin as a photosensitizer for curing under solar irradiation was effective but oxygen inhibition limited cross-linking.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Green & Sustainable Science & Technology
Sakthinarayanan Jayaraman, Selvarasu Uthayanila, Chandrakasan Vanmathi, Parasuraman Karthikeyan
Summary: The current study demonstrates the synthesis of secondary alcohol from ketone using BIL as a homogeneous catalyst, under solvent-free and harsh reaction conditions. Isopropanol was found to be an effective catalyst for clean reduction of ketone to secondary alcohols. The use of ionic liquids as catalysts showed high activity, selectivity, and recyclability.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Materials Science, Multidisciplinary
Dongwoo Kim, Sunghyun Kim, Junyoung Park, Myeonghee Kwon, Suraj Aswale, Heung Bae Jeon, Hong Y. Y. Cho, Seung Man Noh, Hyun-jong Paik
Summary: In this study, a method to control the dual cross-linking of radical and urethane reactions for enhanced polymer coatings was presented using sulfoxide chemistry for protecting and deprotecting vinyl functionalities. Cross-linkable polymers with sulfoxide-protected vinyl and hydroxyl functionalities were synthesized and underwent thermal curing to form urethane and vinyl cross-links. The real-time monitoring of the cross-linking behavior revealed enhanced cross-linking when the reaction rate of the vinyl functionalities was retarded. This work provides insights into enhancing dual-cross-linking reaction efficiency and has applications for automotive clearcoats preparation at low temperatures.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Applied
Chanchal Kumar Kundu, Lei Song, Yuan Hu
Summary: The study investigated the use of oxidized sucrose as a cross-linking agent to stabilize flame retardant coatings on poly amide 66 textiles. Compared to citric acid, oxidized sucrose showed superior coating stability and better flame retardant performance, demonstrating its potential as an effective green flame retardant with cross-linking ability.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Physical
Martin Jakoobi, Vincent Dardun, Clement Camp, Chloe Thieuleux
Summary: The study demonstrates the use of Co-2(CO)(8) as a cost-effective alternative to precious metals for functionalizing PMHS with alkenes, achieving high efficiency. It was found that both traditional dienes and unconventional tethers can effectively cross-link PMHS through hydrosilylation, forming Si-O-Si bridges between chains. Integration of renewable resources like oleic acid derivatives shows potential for creating bio-sourced cross-linked silicone materials.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Qi Wang, Zhongxia Shang, Haiyan Wang, Alexander Wei
Summary: Colloidal Ag particles decorated with Fe3O4 islands can be activated as inverse catalysts for C(sp(2))-H heteroarylation either electrochemically or photochemically. The silver-iron oxide (SIO) particles are reduced into redox-active forms by cathodic charging at mild potentials or short-term light exposure, and can be reused multiple times by magnetic cycling without further activation. The reduction peak shift is attributed to the overpotential produced by surface Fe3O4, which separates residual Ag ions or clusters from bulk silver. The catalytic efficiency of SIO is maintained even with acid degradation, and can be counteracted by simple addition of water to the reaction medium.
Article
Chemistry, Analytical
Ahmed G. Hassabo, Amina L. Mohamed, Tawfik A. Khattab
Summary: This study developed novel fluorescent nanofibers via electrospinning of chromophore-doped cellulose, using cellulose as the host material and perylene dye derivatives as active dopants. The fabricated fluorescent cellulose nanofibers pave the way for the development of promising textile fluorescence materials for applications such as flexible displays, photonics, and optical devices.
Article
Chemistry, Analytical
Mohamed H. El-Newehy, Hak Yong Kim, Tawfik A. Khattab, Meera A. Moydeen, Mehrez E. El-Naggar
Summary: The study developed mechanically reliable and highly photoluminescent LSAN-PAN hybrid nanofibrous film with UV-induced photochromic properties. Immobilizing LSAN onto nanoparticles improved transparency and increased hydrophobicity with enhanced mechanical performance, without compromising appearance.
Article
Materials Science, Ceramics
Mohamed H. El-Newehy, Hak Yong Kim, Tawfik A. Khattab, Mehrez E. El-Naggar
Summary: The study successfully developed lanthanide-doped aluminate nanoparticles/polystyrene electrospun nanofibers as novel secure authentication films, which demonstrated photochromism and fluorescence. The nanofibers had high transparency, stretchability, and hydrophobic properties, showing potential for anti-counterfeiting applications.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Amal H. Abdel Kader, Sawsan Dacrory, Tawfik A. Khattab, Samir Kamel, Hussein Abou-Yousef
Summary: This study aimed to prepare hydrophobic, lightweight, and flame retardant foam composites using modified cellulose and dolomite. The addition of environmentally friendly silicone rubber (RTV) on the foam surface improved water repellency. The optimization of flame retardancy was achieved at low and medium dolomite loading, and the addition of RTV maintained the fire retardancy of the composites at medium loading.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Mohamed H. El-Newehy, Hak Yong Kim, Tawfik A. Khattab, Meera Moydeen Abdulhameed, Mehrez E. El-Naggar
Summary: Electrospun PHBV mats with varying amounts of PEG showed different effects on cell adhesion and growth rates, indicating high potential for soft tissue engineering, particularly in wound healing applications.
Article
Chemistry, Analytical
Mohamed H. El-Newehy, Hak Yong Kim, Tawfik A. Khattab, Mehrez E. El-Naggar
Summary: A photochromic and long-lasting photoluminescent transparent, rigid, UV-protective, and superhydrophobic poly(methyl methacrylate) (PMMA) plastic has been developed, capable of switching colors under UV irradiation. The PMMA plastic, prepared through a simple polymerization process immobilizing alkaline earth aluminate nanoparticles, exhibited enhanced UV shielding and superhydrophobicity, with demonstrated photoluminescence properties.
Article
Materials Science, Multidisciplinary
Sarah Alharthi, Mehrez E. El-Naggar, M. A. Abu-Saied, Tawfik A. Khattab, Dalia Saleh
Summary: A microporous cellulose acetate biopolymer test dipstick was constructed for colorimetric detection of urea, with proton transfer from hydrolysis of urea/urease reaction. Integration of TAM probe led to ratiometric changes in absorption spectra as a function of urea total content in the aqueous medium.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Lingjie Xie, Li Yin, Yina Liu, Hailiang Liu, Bohan Lu, Chun Zhao, Tawfik A. Khattab, Zhen Wen, Xuhui Sun
Summary: The raindrop solar cell can collect both mechanical energy from raindrops and solar energy, achieving high energy conversion efficiency. This study proposes a triboelectric nano-generator with high rain droplet energy conversion efficiency, integrated with a perovskite solar cell through shared electrodes. By adjusting the water droplet parameters, the raindrop output power and mechanical energy conversion efficiency reach 0.68 mW and 12.49%, respectively.
Article
Biochemistry & Molecular Biology
Tawfik A. Khattab, Mehrez E. El-Naggar, Mehboobali Pannipara, S. Wageh, Manal F. Abou Taleb, M. A. Abu-Saied, Ibrahim El-Tantawy El Sayed
Summary: In this study, an environmentally-friendly metallochromic solid state sensor was developed using cyanidin-based anthocyanin as a spectroscopic probe and chitosan nanoparticles integrated onto cellulose paper strip as a host matrix for real-time determination of ferric ions. The sensor showed high selectivity, fast response, low cost, and environmental safety.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Tawfik A. Khattab, Samir Kamel
Summary: Electrically conductive hydrogels with self-healing ability have unique properties and promising applications in biomedical and electronic fields. This article discusses the preparation, mechanisms, characterization, and attractive applications of polysaccharide-based hydrogels with self-healing and electrical conductivity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xiaoping Chen, Yina Liu, Yi Sun, Tianshi Zhao, Chun Zhao, Tawfik A. Khattab, Eng Gee Lim, Xuhui Sun, Zhen Wen
Summary: In this study, a MXene/TiO2 hybrid film was prepared as an intermediate layer in a TENG to regulate and store charges, thereby improving the output performance of the TENG.
Article
Polymer Science
Mahmoud Essam Abd El-Aziz, Samir M. M. Morsi, Kholod H. Kamal, Tawfik A. Khattab
Summary: In this study, a carbon nanoparticle-modified crosslinked chitosan nanocomposite was successfully synthesized and its adsorption capacity for lead ions and methylene blue in wastewater was investigated. The results demonstrated that the nanocomposite exhibited superior adsorption performance compared to individual crosslinked chitosan and carbon nanoparticles.
Article
Chemistry, Analytical
Islam El-Nagar, Ahmed M. Youssef, A. A. Abd El-Hakim, El-Refaie Kenawy, Hamada S. A. Mandour, Tawfik A. Khattab
Summary: A novel dicyanomethylene dihydrofuran hydrazone (DCDHFH) based colorimetric chemosensor was developed for the detection of Cd(II) in aquatic media, showing strong sensitivity and selectivity towards cadmium ions. The evaluation of cadmium detection abilities of DCDHFH-immobilized paper strips was conducted based on CIE Lab's criteria, colorimetric strength (K/S), and UV-Vis absorbance spectra. The optimal pH range for Cd(II) determination was determined to be between 5.5-6.3, with a rapid chromogenic change from yellow to red depending on Cd(II) concentration.
Article
Polymer Science
Mahmoud T. Abdu, Tawfik A. Khattab, Maiada S. Abdelrahman
Summary: A polyester resin was reinforced with electrospun glass nanofibers to create long-lasting photochromic and photoluminescent products, such as smart windows and concrete, as well as anti-counterfeiting patterns.
Article
Materials Science, Multidisciplinary
Meram S. Abdelrahman, Shimaa S. M. Elhadad, Mehrez E. El-Naggar, Hatem E. Gaffer, Tawfik A. Khattab
Summary: The presented research work focuses on the development of new smart textiles with photoluminescence properties. Rare-earth-doped aluminate nanoparticles were immobilized into silicone rubber and spray-coated onto cotton fibers to create a photoluminescent coating. The findings show improved superhydrophobic activity and color change of the fabric by adjusting the nanoparticle content.
Article
Chemistry, Applied
Heena, Komal Sharma, Kamlesh Kumar, Bhargab Das, Raj Kumar
Summary: In this study, holographic films were prepared using an automatic film applicator, and their performance was compared with films prepared by other methods. The results showed that holographic films prepared with the automatic film applicator had higher diffraction efficiency and more uniform thickness, making them suitable for holographic applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Athira S. Vijayan, Antony Joseph, Abey Joseph, T. S. Abhijith, Baiju G. Nair, V. Sajith
Summary: Novel polydopamine functionalized ceria-zirconia nanoparticles filled water-borne epoxy nanocomposite coatings were developed to prevent microbial-induced corrosion of mild steel. The coatings exhibited exceptional anti-biofouling and anti-biocorrosion properties due to the synergistic effect of PDA functionalization and zirconium incorporation, providing significant enhancement in charge transfer resistance and coating resistance.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yudan Yi, Qingyong Sun, Qijun Li, Bi Shi, Ya-nan Wang
Summary: Producing metal-free leather is an effective approach to eliminate Cr pollution and achieve sustainable development of the leather industry. However, current metal-free tanning technologies have limitations in terms of water sorption and charge properties. By using cationic amphiphilic acrylic copolymers (PSD) as retanning agents, the properties of metal-free leather can be significantly improved, including enhanced hydrophobicity, better dye absorption, and excellent filling effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yunqing Xia, Lifen Tong, Xiaofang Feng, Hubing Xiang, Yi He, Xiaobo Liu
Summary: By incorporating functionalized nanofillers, such as polydopamine-modified graphitic carbon nitride and cerium oxide, into epoxy coatings, their corrosion resistance can be improved and their protective period can be extended.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Weineng Lu, Guanhao Ma, Jinqing Qu
Summary: Four novel bis-chalcone-based carbazole derivative photoinitiators were designed and synthesized in this study. Their maximum absorption wavelengths were determined and found to exhibit high molar extinction coefficients. Furthermore, a three-component photoinitiation system including bis-chalcone/iodonium/amine was successfully used to trigger the rapid and efficient photopolymerization of acrylates. The photoinitiators also showed good photo bleaching and biocompatibility, making them suitable for applications such as 3D printing and deep coating curing.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Xingnan Zhou, Shixian Zhang, Yiheng Song, Hongmei Qin, Chuanxi Xiong, Shan Wang, Quanling Yang, Delong Xie, Rong Fan, Dan Chen
Summary: In this study, eco-friendly 3-amino-1,2,4-triazole (ATA) molecules were used to modify graphene oxide (GO) nanosheets for improving the anti-corrosion performance of water-borne epoxy (WEP) coating. The results show that ATA modification enhances the dispersion of GO in the polymer coating and significantly improves the barrier effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Hao Fu, Wei Bing, Xushibojie Liu
Summary: In this study, temperature-sensitive coatings with bacteria-killing and bacteria-releasing functions were prepared on silicone rubber surfaces by UV polymerization and UV photocatalysis. The modified surface exhibited strong and persistent bactericidal effect, inhibiting the formation of bacterial biofilm. Moreover, the smart surface can effectively release bacteria and resist bacterial adhesion through temperature changes. The modified silicone rubber surface showed good biocompatibility without cytotoxicity.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Lee Eyann, Zulkifli Mohamad Ariff, Mohamad Danial Shafiq, Raa Khimi Shuib, Muhamad Sharan Musa
Summary: By investigating the effect of MAA addition on the properties of the WEA core-shell emulsion, film and coating, it was found that MAA can significantly impact the structure and performance of the coatings, and has great potential for applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Jinkyu Choi, Kyung Hoon Min, Byeong Seok Kim, Sung-Hyeon Baeck, Sang Eun Shim, Yingjie Qian
Summary: A novel phosphorus-based flame retardant was designed by incorporating aryl groups, which effectively improved the flame retardancy and mechanical properties of polyurethanes.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Saowaluk Taechutrakul, Thananchai Piroonpan, Beata Paulina Rurarz, Slawomir Kadlubowski, Piotr Ulanski, Wanvimol Pasanphan
Summary: This study proposes the use of nanogels to disperse and stabilize water-insoluble organic pigment particles in water-based inks. The nanogels were prepared using electron beam-induced chemical reactions and showed good dispersion and stabilization properties. The use of nanogels in ink formulation improved the ink's hiding power, lightfastness, and resistance properties.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Shan Wan, Huikai Chen, Bokai Liao, Xingpeng Guo
Summary: In this study, 2-amino-5 mercapto-1,3,4-thiadiazole (ATT) was used as an intercalating agent to prepare ATT/BNNS nanofillers via a liquid-phase assisted ultrasound method. TEM results showed that ATT successfully exfoliated BNNS and reduced agglomeration. The WEP ATT/BNNS coating exhibited the best protective performance under saline immersion due to the combined action of ATT inhibitor and BNNS physical barrier.
PROGRESS IN ORGANIC COATINGS
(2024)
Review
Chemistry, Applied
Lijie Yin, Bo Zhang, Ming Tian, Nanying Ning, Wencai Wang
Summary: This paper reviews the recent progress in the synthesis of bio-based waterborne polyurethanes (BWPU) and focuses on its applications in coatings, adhesives, and antimicrobials. BWPU has attracted much attention due to its good physical and chemical properties, no VOCs emissions, exploitation of renewable substances, and structural design-ability.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yuyang Zhou, Yang Chen, Xinming Cao, Haodong Fu, Yun Li, Yonghui Zhang, Jun Ma, Xin Liu
Summary: This study proposes a strategy to fabricate a high-strength double-layer superhydrophobic actuator, which consists of a metal/glass-based superhydrophobic substrate and a polymer superhydrophobic coating. The coating has high adhesive strength, self-cleaning, anti-ultraviolet irradiation, and anti-stripping properties, along with photothermal and magnetic response capabilities, enabling its application in various fields.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Fengbiao Chen, Fei Gao, Xinru Guo, Yu Chen, Xuelang Gao, Liang Shen
Summary: In this study, various covalent adaptable networks (CANs) were synthesized using multifunctional amines and compared with CANs prepared from primary and secondary amines. The results showed that the performance of CANs is closely related to the crosslinking density, and increasing the content of secondary amines improves the performance but weakens the dynamics.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Qian Zhang, Mengyi Shen, Xingcai Liu, Hao Fu, Wenbo Yang, Jinyuan Zhao, Jian Wang, Yaping Du, Chunjie Ma
Summary: Rare earth-containing corrosion inhibitors were successfully synthesized and added into epoxy coatings for the anti-corrosion of steel materials. The results showed that the coatings with rare earth elements had better anti-corrosion performance, and this difference in performance could be explained by the inherent properties of rare earth elements.
PROGRESS IN ORGANIC COATINGS
(2024)
