Article
Chemistry, Applied
Changjiang Yu, Martina Salzano de Luna, Angela Marotta, Corinna Ponti, Ilaria Esposito, Fabio Scherillo, Zhanhua Wang, Xi Zhang, Hesheng Xia, Marino Lavorgna
Summary: The study successfully developed a self-healing waterborne polyurethane coating with Diels-Alder bonds for self-repair, utilizing NIR light as trigger. The nanocomposite PU coatings demonstrated fast and effective self-healing under NIR light irradiation, along with enhanced corrosion protection for the underlying substrate.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Biochemistry & Molecular Biology
Meiling Zhang, Xiaoming Yu, Mengyi Sheng, Hua Chen, Bailin Chen
Summary: In this study, a mussel-inspired supramolecular polymer coating was developed to improve the anti-corrosion and self-healing properties of an AZ31B magnesium alloy. The coating utilized a self-assembled aggregate of polyethyleneimine (PEI) and polyacrylic acid (PAA) that took advantage of weak non-covalent interactions. Cerium-based conversion layers were used to overcome corrosion between the coating and substrate. Catechol mimicked mussel proteins to form adherent polymer coatings. The addition of graphene oxide (GO) as an anti-corrosive filler improved the barrier and impermeability properties of the supramolecular polymer coating. The results demonstrated that the polymer coating had superior corrosion resistance and rapid self-healing capabilities.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Khalid Azyat, Darren Makeiff, Bradley Smith, Mickie Wiebe, Steve Launspach, Ashley Wagner, Marianna Kulka, Nicolas Godbert
Summary: Mono-N-alkylated primary oxalamide derivatives with different sized branched alkyl tail-groups are effective gelators for various organic solvents. The molecular structures of the tail-groups have significant effects on gel properties in select solvents. These gelators show no cytotoxicity and are suitable for biomedical applications.
Article
Chemistry, Physical
D. A. Makeiff, J-y Cho, N. Godbert, B. Smith, K. Azyat, A. Wagner, M. Kulka, R. Carlini
Summary: In this study, seven alkylated benzimidazolone derivatives with different size and shape hydrocarbon tail-groups were synthesized. The compounds with amide linker and branched hydrocarbon tail-group were found to be successful gelators. The size, shape, and hydrophobicity of the tail-group significantly influenced the gelator ability and network morphology. Spectroscopic and molecular modelling studies provided insight into the self-assembly driving forces of gels with low polarity liquids. Cytotoxicity studies indicated that the alkylamido BZI gelators were biocompatible and could potentially have therapeutic properties.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Cheng-You Wu, Ashenafi Zeleke Melaku, Wei-Tsung Chuang, Chih-Chia Cheng
Summary: A newly developed electrically conductive supramolecular polymer composite can efficiently exfoliate crystalline graphite into highly disordered graphene nanosheets with well-tailored physical and conductive properties. By controlling the content of 3A-PCL, the number of graphene layers exfoliated can be adjusted, and the composite exhibits excellent electrical conductivity at a graphite loading of 23 wt%.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Jiacheng Ma, Shifeng Wen
Summary: In this paper, a luminescent organogel sensor with high elasticity, stretchable, transparent and luminescent properties is reported. The organogel exhibits excellent self-healing performance and admirable mechanical properties. Additionally, it can be used as a sports sensor to monitor motion states. This strategy provides a novel elastomer for applications in e-skin and soft robots, and enriches the synthetic methods of functional organogels.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Wenjun Feng, Zhengke Wang
Summary: This article reports on the fabrication of an injectable and self-healing hydrogel through one-pot heating of chitosan and graphene oxide mixture solution. The resulting hydrogel exhibits good adhesiveness, hemostatic, and wound healing capabilities, making it a promising candidate for wound dressings.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Composites
Bhashkar Singh Bohra, Poonam Singh, Anita Rana, Harsh Sharma, Tanuja Arya, Mayank Pathak, Alok Chaurasia, Sravendra Rana, Nanda Gopal Sahoo
Summary: This study utilized covalent functionalization to modify graphene oxide (GO) with 4-aminophenyl disulfide (4-AFD) for the development of vitrimer epoxy nanocomposites. The functionalization of GO was confirmed through FT-IR, Raman, and XRD analyses, as well as TEM and elemental analysis. The dispersion of GO and FGO inside the polymer matrix was examined using FE-SEM, showing improved dispersion due to the functionalization of GO.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Hyeongtae Kim, Jihyun Lee, Soo Bin Shim, Moon Se Kim, Bharat Shrimant, Jae Hyun Lee, Sang Yong Nam, Dong-Jun Kwon, Jun Hong Park
Summary: The presence of microcracks in polymer coatings degrades the structural stability and lifespan of the protective layers. Enhancing the polymer-coated surfaces with self-healing properties has attracted considerable attention. By improving the strength and self-healing properties of polyurethane/graphene oxide (PU/GO) composite materials through two GO treatments (mechanical milling and chemical treatment with HF), a healing efficiency of over 80% can be achieved. The HF-treated GO-reinforced composites demonstrate high self-healing efficiency and remarkable mechanical performance, making them a promising self-healing material for protecting structural composites.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Polymer Science
Nguyen Khai Hoang Nguyen, Huan Hoang Dang, Loc Tan Nguyen, Ly Mai Thi Nguyen, Thuy Thu Truonga, Ha Tran Nguyen, Thiet Quoc Nguyen, Chau Duc Tran, Le-Thu T. Nguyen
Summary: For the first time, hydrogen bonding complexes between poly(4-vinyl pyridine) (P4VP) and its copolymers were used as a healing concept to build supramolecular materials with self-healability. Through the synthesis of P4VP and its copolymers with stearyl acrylate and stearyl methacrylate, and the formation of complexes with 3,3'-dithiodipropionic acid (DTDP) as a crosslinker, efficient self-healing of complete cuts at room temperature was achieved.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Materials Science, Characterization & Testing
Hang Yuan, Chenming Ji, Hua Yuan
Summary: In this study, a polyurethane composite PCL-MDI-SeSe-PU/NCO-GO was synthesized, and it showed efficient self-healing behavior through the thermal stimulated dynamic properties of diselenide bond and the photothermal effects of graphene oxide.
Article
Nanoscience & Nanotechnology
D. Callegari, S. Colombi, A. Nitti, C. Simari, I Nicotera, C. Ferrara, P. Mustarelli, D. Pasini, E. Quartarone
Summary: The research focused on enhancing the performance of nanosized black phosphorus (BP) anodes in sodium-ion batteries by utilizing a self-healing strategy based on dynamic quadruple hydrogen bonding. By developing novel polymeric blends, the SH electrode showed significantly improved capacity retention, maintaining functionality even at higher current densities thanks to better adhesion, buffering properties, and spontaneous damage reparation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Xiao-Kang Fu, Hao-Bo Cao, Yu-Long An, Hui-Di Zhou, Yan-Ping Shi, Guo-Liang Hou, Wei Ha
Summary: A novel HA composite coating infiltrated with vancomycin-loaded graphene oxide (GO) hydrogel was developed using a bioinspired strategy, resulting in improved self-lubrication, anti-wear performance, and antibacterial property.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Pharmacology & Pharmacy
Prabhakar Orsu, Haider Yaroub Haider, Arun Koyyada
Summary: The study reported on the fabrication and characterization of nanostructured CMGG and rGO composite dressings loaded with curcumin for chronic wound healing. In vitro studies showed 100% wound closure within 48 hours and controlled drug release, while in vivo results demonstrated the potential wound healing effects of the nanocomposite. Histological studies indicated that the biomimetic CMGG nanofibers have excellent healing effects on chronic wounds.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Chemistry, Multidisciplinary
Ke-Qi Zhang, Khalil Ur Rehman, Jian Gao
Summary: Self-healing film actuators based on interfacial supramolecular crosslinking and hierarchical structural design have been developed to overcome the limitations of multi-responsive actuators in soft robots. The graphene oxide supramolecular film exhibits excellent reversible deformation under various trigger signals and has a good self-healing property. The integration of reconfigurable liquid metal on the graphene oxide film further enhances the functionality of the actuators.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Energy & Fuels
Maria Hasnain, Zainul Abideen, Saud Hashmi, Shagufta Naz, Neelma Munir
Summary: The present study investigates the effects of nutrient deficiency on the growth and metabolism of different algae species, and finds that nitrogen, phosphorus, and iron deficiency can lead to increased production of carbohydrates and lipids, which is important for improving biodiesel quality.
Article
Chemistry, Multidisciplinary
Syed Imran Ali, Shaine Mohammadali Lalji, Zahoor Awan, Saud Hashmi, Ghani Khan, Muhammad Asad
Summary: This research study compares the performance of four different kinetic models in predicting asphaltene adsorption kinetic on nanoparticles. The pseudo-second-order kinetic model proves to be the best model. The study also finds that data generated in later times of the experiment better fit the models compared to data generated in earlier times.
Article
Biochemistry & Molecular Biology
Mehdihasan I. Shekh, Guangming Zhu, Wei Xiong, Weiling Wu, Florian J. Stadler, Dijit Patel, Chengtian Zhu
Summary: By forming multi-dynamic interactions and strong covalent interactions, stretchable, self-recoverable, conductive, and tough nanocomposite hydrogels (NCHGs) were successfully synthesized. These NCHGs exhibited high mechanical strength, toughness, stretchability, elasticity, and conductivity. The presence of Fe(III) ions and conducting fillers endowed excellent repeatability and stability in resistance change, along with ultra-broad sensitivity and minimal resistance change.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Biomedical
Peyman GhavamiNejad, Amin GhavamiNejad, Hanjia Zheng, Karan Dhingra, Melisa Samarikhalaj, Mahla Poudineh
Summary: This study introduces a low-cost hydrogel microneedle (HMN)-CGM assay for glucose detection. The HMN patch, fabricated using dopamine-hyaluronic acid hydrogel, allows glucose interrogation in dermal interstitial fluid (ISF). In vitro and ex vivo studies demonstrate the good performance of this method, and real-time measurement of glucose is achieved in a rat model of type 1 diabetes.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Environmental Sciences
Saud Hashmi, Rafiq Ahmed, Adeel ur Rehman, Alberto Garcia-Penas, Awan Zahoor, Firoz Khan, Mohammad Vatankhah-Varnosfaderani, Thamraa Alshahrani, Florian J. Stadler
Summary: Hybrid hydrogels based on n-isopropylacrylamide, zwitterionic comonomer, and graphene oxide were synthesized to study their physical and mechanical properties. The compositional variation greatly affected the swelling characteristics of the hybrid hydrogels, while the mechanical properties such as elongation and compression were less influenced. Rheometric swelling measurements showed a strong covalent network, which increased with increasing content of zwitterions and GO. Kinetics of swelling followed Fickian dynamics and 2-step swelling pattern was observed for zwitterion-containing gels. The study also observed differences in swelling mechanism between hydrogels with 2D GO nano-fillers and 1D CNT nano-fillers, and differences in mechanical properties between elongation and compression modes.
Review
Energy & Fuels
Amit Kumar, Atul Khosla, Sunil Kumar Sharma, Pooja Dhiman, Gaurav Sharma, Lalitha Gnanasekaran, Mu. Naushad, Florian J. Stadler
Summary: This article provides a review on the transition from Z-scheme to S-scheme photocatalytic materials, discussing different types of heterojunctions and charge transfer mechanisms. It also presents the synthetic routes to S-scheme heterojunctions and highlights their current applications in pollutant degradation, hydrogen production, and CO2 conversion. The commercialization status and existing readiness and bottlenecks of S-scheme heterojunctions are also discussed.
Article
Chemistry, Multidisciplinary
Jun-Feng Liu, Zhan-Yu Wu, Florian J. Stadler, Yan-Fei Huang
Summary: The incorporation of ionic liquids (ILs) in solid-state polymer electrolytes (iono-SPEs) greatly enhances Li+ transport in polymer phases. By using a poly (vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) (PTC) as the framework of ILs, non-uniform Li+ transport among different phases is reduced. This is achieved through weaker adsorption energy of IL cations on PTC chains compared to PVDF and the higher dielectric constant of PTC facilitating the dissociation of Li-anions clusters. The LiFePO4/PTC iono-SPE/Li cells show stable cycling performance with high capacity retention after 1000 cycles at 1 C and 25 degrees C. This work provides a novel approach to induce uniform Li+ flux in iono-SPEs through polarity and dielectric design of the polymer matrix.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Shi-Chang Wang, Shu-Tong Du, Saud Hashmi, Shu-Ming Cui, Ling Li, Stephan Handschuh-Wang, Xuechang Zhou, Florian J. Stadler
Summary: This study investigates the rheological properties of dual-network hydrogels based on acrylamide and sodium alginate under large deformations. The concentration of calcium ions affects the nonlinear behavior, and all gel samples exhibit strain hardening, shear thickening, and shear densification. The paper focuses on the systematic variation of the alginate concentration and the Ca2+ concentration in order to understand their impact on the hydrogel's properties.
Article
Chemistry, Multidisciplinary
Jackie Fule Liu, Amin Ghavaminejad, Brian Lu, Sako Mirzaie, Melisa Samarikhalaj, Adria Giacca, Xiao Yu Wu
Summary: A novel glucose-responsive microneedle patch has been developed to deliver insulin at hyperglycemia, showing great potential for clinical translation. The patch is made of self-crosslinkable polymer-based hydrogel microneedles that can quickly release insulin in response to high glucose concentrations.
Article
Polymer Science
Gaurav Sharma, Alberto Garcia-Penas, Yaksha Verma, Amit Kumar, Pooja Dhiman, Florian J. Stadler
Summary: This study successfully designed shape-oriented hydrogel nanospheres using a facile ultrasonication-supported crosslinked copolymerization technique. The chitosan-cl-poly(MMA) hydrogel nanospheres were characterized and found to have optimal rhodamine B dye adsorption capacity at pH 5. Nanohydrogel concentration also affected the adsorption capacity and percentage.
Article
Materials Science, Composites
Ge-Ge Zheng, Xin Lin, Zhen-Xing Wen, Yu-Hao Ding, Rui-Hui Yun, Gaurav Sharma, Amit Kumar, Florian J. Stadler
Summary: Photocatalytic degradation is crucial for wastewater treatment, and efficient degradation relies on photocatalytic systems with excellent light absorption, carrier separation efficiency, and surface-active sites. S-type heterojunctions, especially the BiFeO3/ZnIn2S4 heterojunction, show remarkable potential for efficient degradation. This study focuses on enhancing the photocatalytic degradation performance by introducing sulfur vacancy defects and morphology modifications to ternary indium metal sulfide and bismuth ferrite nanofibers. The optimized 30% BiFeO3/ZnIn2S4 heterojunction exhibits superior photocatalytic performance, with high sulfur vacancy concentration and enhanced electron transport efficiency. It achieved a remarkable 99% degradation of Evans blue within 45 minutes and a significant 68% degradation of ciprofloxacin within 90 minutes. These results provide a feasible approach for developing photocatalysts to address water pollution issues under practical conditions.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Education, Scientific Disciplines
Stephan Handschuh-Wang, Florian J. Stadler
Summary: New experiments on redox reactions at the liquid metal (Galinstan) interface are presented in this article. These experiments link redox reactions with standard potentials and metallurgy. The experiments offer a simple setup, easy handling without hazardous chemicals, a quick visual and memorable access to redox reactions, as well as the ability to reclaim and reuse the liquid metal (Galinstan).
Article
Chemistry, Physical
Shu-Ming Cui, Saud Hashmi, Wen-Qiang Li, Stephan Handschuh-Wang, Cheng-Tian Zhu, Shi-Chang Wang, Yan-Fei Huang, Guang-Ming Zhu, Florian J. Stadler
Summary: This paper investigates Pickering emulgels stabilized by graphene oxide (GO) with didodecyldimethylammonium bromide (DDAB) as an auxiliary surfactant and liquid paraffin as the oil phase, which are proved to be excellent 3D printable ink. The structure of these emulgels is elucidated by microscopy, broadband dielectric spectroscopy and rheology analysis. It is found that the increase of DDAB surfactant and GO-contents results in an increase of modulus and viscosity, a reduction of nonlinear regime limits, and a complex variation of normal forces.
Article
Multidisciplinary Sciences
Syed Imran Ali, Shaine Mohammadali Lalji, Muhammad Rizwan, Zahoor Awan, Saud Hashmi, Syed Danish Rasool
Summary: The flow properties of crude oil can be improved by increasing temperature or diluting the oil with lower molecular weight hydrocarbons. However, these operational changes often lead to asphaltene deposition problems. In this study, a two-level full factorial design was applied to investigate the effect of three experimental parameters on the yield of asphaltene weight percentage. The results showed that dilution ratio has a significant positive effect, while molecular weight of precipitant and temperature have a moderate negative effect on the response variable. The study provides a useful methodology for optimizing production parameters.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Mechanics
Chen Liu, Jianzhong Lin, Zhenyu Ouyang
Summary: This study simulated the locomotion state and motion type of elliptical squirmers in a channel flow of power-law fluids. The influence of different parameters on the squirmers was explored, and it was found that coupled structures are prone to break and viscosity significantly affects the flow velocity and motion type of squirmers.
Article
Mechanics
E. E. Herrera-Valencia, M. L. Sanchez-Villavicencio, C. Soriano-Correa, O. Bautista, L. A. Ramirez-Torres, V. J. Hernandez-Abad, F. Calderas
Summary: This study investigated the electroosmotic flow of a viscoelastic fluid in a capillary system. The rheology of the fluid was characterized by a novel generalized exponential model equation, and the effect of charge density on the double-layer field and electrical forces was analyzed. Mathematical models were used to describe the rheological properties and flow performance of the fluid, and experimental data were used to make predictions. The study also examined the influence of applied forces on the structure of the fluid.
Article
Mechanics
Stefano Amadori, Giuseppe Catania
Summary: This article presents a multi-step, iterative technique for locally non-parametric identification of the standard linear solid (SLS) material model using fractional order time differential operators. Test input data consists of a set of identified material complex modulus values estimated at different frequency values obtained from input-output experimental measurements and quasi-static relaxation measurements on the same specimen. The proposed technique is based on an algebraic procedure to solve an overdetermined system of linear equations in order to obtain optimal values for the unknown parameters of the model. The procedure is non-parametric, as the order of the SLS model is initially unknown.
