Article
Thermodynamics
Ke Xu, Fan Jing, Ruikang Zhao, Chengsuang Wang, Qingjun Wang, Hongfeng Xie
Summary: Bio-based interpenetrating polymer networks (IPNs) with tunable thermal and mechanical properties were prepared using bio-based polyurethane (PU) and epoxy resin (EP) derived from plant oils. The composition of the IPNs affected the dynamic modulus, glass transition temperature, thermal stability, tensile strength, damping properties, and elongation at break. By adjusting the mass ratio of the plant oil-based EP to the soybean oil-based PU, the desired properties of the bio-based PU/EP IPNs can be achieved.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Polymer Science
Xi Li, Yanhui Niu, Tao Ai, Xu Li, Peng Yang, Xinyu Wang, Zhuo Zhang
Summary: In this research, innovative self-healing interpenetrating polymer networks (IPNs) based on polyurethane elastomer and cross-linked epoxy are designed and prepared. The IPNs containing dynamic disulfide bond exhibit favorable damping and self-healing properties. What is more, the PU/EP IPNs also have excellent shape memory properties and thermal stability.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Construction & Building Technology
Yunlong Ma, Zhenyi Liu, Pengliang Li, Mingzhi Li, Yao Zhao
Summary: In this study, an epoxy resin/acrylate interpenetrating polymer network (IPN) MR with oil-surface bonding was prepared, showing characteristics of rapid curing and high strength, suitable for rapid damage repair of oil pipelines. By optimizing the ingredient proportion and testing the optimum amount of filler, the material properties were enhanced.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Polymer Science
Jie Liu, Pengcheng Miao, Wenwen Zhang, Guanjun Song, Jiale Feng, Xuefei Leng, Yang Li
Summary: This study successfully synthesized a series of interpenetrating polymer networks (IPNs) using a sequential UV-thermal dual-curing method. The effect of different polyol hydroxyl numbers on the properties of IPNs was systematically studied. The results showed that pentaerythritol as polyol exhibited the highest tensile strength. Moreover, introducing interpenetrating or semi-interpenetrating networks improved the mechanical properties of the UV curable resin.
Article
Agricultural Engineering
Abdus Sobhan, Varlika Ahirekar, Magdalene Hoff, Kasiviswanathan Muthukumarappan
Summary: The scientific community is focusing on developing high-value-added epoxidized soybean oil and green bio-based epoxy resins using sustainable resources. The goal is to produce low-cost, value-added, and bio-based epoxy resins from conventional soybean oils and commercialize the technology for chemical industries. The use of deep eutectic solvent catalysts in the synthesis of epoxidized soybean oil has shown improved carbon-carbon double bond conversion and selectivity. Novel bio-based epoxy resins catalyzed by these catalysts have also shown enhanced mechanical properties.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Food Science & Technology
Mengjia Du, Wei Lu, Yin Zhang, Analucia Mata, Yapeng Fang
Summary: Compared to single network hydrogels, interpenetrating network hydrogels generally exhibit more favorable mechanical performance, water holding capacity, and thermal stability. The strengthening mechanisms of interpenetrating network hydrogels are mainly attributed to polysaccharides filling, increased network density, and possible interactions between networks. Furthermore, interpenetrating network hydrogels with tunable mechanical properties have great potential for various food applications.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Cristian-Dragos Varganici, Liliana Rosu, Dan Rosu, Corneliu Hamciuc, Irina Rosca, Ana-Lavinia Vasiliu
Summary: Epoxy resins, despite their excellent features, have drawbacks such as flammability, low thermal stability, and brittleness. This article investigates the effect of different hardeners and an oligophosphonate on epoxy-based semi-interpenetrating polymer networks, aiming to improve their photochemical, fire, and antifungal performance. The findings suggest that these networks exhibit enhanced fire resistance and antifungal properties, making them suitable for outdoor protective coatings.
Article
Polymer Science
Ya-Shiuan Lee, Wen-Jau Lee, Yi-Chun Chen
Summary: This study investigates the influence of polyurethane resin composition on the reactivity and properties of epoxy resin/polyol/isocyanate blended resin. It is found that the addition of polyurethane resin can improve the toughness of epoxy resin, and different compositions have varying reactivity and properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Cristian-Dragos Varganici, Liliana Rosu, Sandro Lehner, Corneliu Hamciuc, Milijana Jovic, Dan Rosu, Fanica Mustata, Sabyasachi Gaan
Summary: The study investigated the comparative effect of three different hardeners and an oligophosphonate on the thermal behavior and fire performance of epoxy resin semi-interpenetrating networks, finding that the oligophosphonate significantly enhanced the fire performance. Results suggest that the semi-interpenetrating network cured with aromatic hardener could serve as a potential matrix for flame retardant composites or coatings.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Qiang Feng, Menglu Shen, Jiaming Zhu, Jiang Li, Jie Zhang, Shaoyun Guo
Summary: A novel PU/EP IPN damping material with a broad high-damping temperature range was successfully prepared by using 21-hydroxyl β-cyclodextrins as chain extenders, which showed superior damping effects at different temperatures compared to traditional materials.
MATERIALS & DESIGN
(2021)
Article
Engineering, Chemical
Nima Alizadeh, Asha-Dee N. Celestine, Maria L. Auad, Vinamra Agrawal
Summary: The stress relaxation behavior of acrylic-polyurethane (PU)-based graft-interpenetrating polymer networks (IPNs) was studied through dynamic mechanical analysis (DMA) and numerical modeling using finite element method (FEM). Experimental results were used to develop a three-dimensional FEM model, with good agreement between experimental observations and FEM model results. The effects of varying styrene content, phase compatibility in IPNs, and concentration of acrylic copolymer and PU on stress relaxation were investigated.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Polymer Science
Qi Xu, Jianwei Lin, Guichang Jiang
Summary: This paper explores the use of environmentally friendly and renewable bio-based materials to prepare polyurethane. Epoxy soybean oil and polyethylene glycol were used to prepare soybean oil-based polyester polyols, which were then reacted with isophorone diisocyanate to synthesize soybean oil-based polyurethane. The properties of the polyurethane films were adjusted by changing the reaction conditions, and the results show that the properties of the polyurethane films change accordingly.
Article
Polymer Science
Dharmalingam Sivanesan, Suna Kim, Tae Woo Jang, Hye Jin Kim, Jinyoung Song, Bongkuk Seo, Choong-Sun Lim, Hyeon-Gook Kim
Summary: The synthesis of a novel polyurethane (PCL-TCD-PU) and its use as a reinforcing agent with epoxy resin demonstrated improved mechanical and thermal properties of the polymer, with excellent physical properties and significant impact on the adhesive strength of the epoxy resin.
Article
Polymer Science
Nikita A. Bratasyuk, Stepan A. Ostanin, Maxim Mokeev, Vjacheslav V. Zuev
Summary: This study investigated the diffusion of water in epoxy-polyurethane interpenetrating networks and found different states of water molecules and their formation sequence. The influence of water uptake on material properties was determined.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Engineering, Multidisciplinary
Cheng-Bing Qu, Tong Wu, Gui-Wen Huang, Na Li, Meng Li, Jun-Li Ma, Yu Liu, Hong-Mei Xiao
Summary: The study found that EP can effectively enhance the mechanical strength of composites, with EP/HTPU1 exhibiting the best tensile properties of the EP matrix and CF/EP/HTPU2 showing the highest longitudinal tensile strength. The microstructure after curing and the interfacial adhesion between matrix and fibers strongly affect the tensile properties of composites.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Thermodynamics
Xiaocheng Han, Wufeng Su, Jie Gong, Zhonghua Xi, Junsheng Zhang, Jun Cai, Qingjun Wang, Hongfeng Xie
Summary: The study found that introducing asphaltene fillers into epoxy resin affects the material properties, such as increasing viscosity, enhancing Young's modulus, and storage modulus. With an increase in asphaltene content, aggregation and network structures appear in the microstructure, while there is minimal impact on glass transition temperature, damping properties, and thermal stability.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Yifan Sun, Ya Liu, Jie Gong, Xiaocheng Han, Zhonghua Xi, Junsheng Zhang, Qingjun Wang, Hongfeng Xie
Summary: In this study, the effects of asphalt content on Epoxy Asphalt Bond Coat (EABC) were characterized using various instruments. It was found that with the increase of asphalt content, the phase separation, viscosity, and mechanical properties of EABC showed different trends.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Review
Construction & Building Technology
Hongfeng Xie, Chenxuan Li, Qingjun Wang
Summary: This paper reviewed the application of epoxy asphalt in steel deck bridges and analyzed its performance, classification, and phase separation mechanism, discussing the factors influencing its mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Ruikang Zhao, Fan Jing, Rui Wang, Jun Cai, Junsheng Zhang, Qingjun Wang, Hongfeng Xie
Summary: The research investigated the impact of oligomer content on the viscosity, dynamic mechanical properties, and mechanical behaviors of hot-mix epoxy asphalt binders. The results showed that the viscosity decreased and the construction time increased with higher oligomer content. The storage modulus decreased at the glassy stage but increased at the rubbery stage. The epoxy asphalt binders exhibited two glass transition temperatures and increased in the epoxy oligomer content. The damping properties and tensile strength increased with higher oligomer content, while the elongation at break and toughness showed an opposite trend.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Chenxuan Li, Jie Gong, Ruikang Zhao, Zhonghua Xi, Qingjun Wang, Hongfeng Xie
Summary: This paper investigates the influence of polymer loading on the properties of recycled polyethylene modified epoxy asphalt binder. The results show that the binder has a double phase separation structure with increased viscosity and improved thermal stability. The addition of polymer also enhances the damping behavior and mechanical properties, but only at low concentrations.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Materials Science, Composites
Ruikang Zhao, Fan Jing, Chenxuan Li, Rui Wang, Zhonghua Xi, Jun Cai, Qingjun Wang, Hongfeng Xie
Summary: Graphene oxide (GO) was used to modify warm-mix epoxy asphalt binders (WEABs) with different loading, and the performance of the composites was investigated. The results showed that GO significantly enhanced the thermal stability and mechanical properties of the pure binder. The addition of GO also affected the viscosity and phase-separated morphology of the modified binders.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Analytical
Ge Gao, Nanjing Jia-Hao Chen, Cheng-Jun Li, Cheng-Shuang Wang, Jin Hu, Hong Zhou, Peng Lin, Qin Xu, Wei-Wei Zhao
Summary: This study presents a novel organic photoelectrochemical transistor (OPECT) for sensitive microRNA detection using semiconductor metal-organic frameworks (MOFs) and heterojunctions. The device achieved dual-amplified miRNA detection with a low detection limit by utilizing an energy transfer process. The research also highlights the potential of semiconductor MOF heterojunctions in optobioelectronics.
ANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Fan Jing, Ruikang Zhao, Chenxuan Li, Zhonghua Xi, Qingjun Wang, Hongfeng Xie
Summary: This study explored the cure behavior, thermal and mechanical properties of epoxy vitrimers and their relationship with the epoxy/acid stoichiometry. The results showed that an increase in the epoxy/acid ratio decreased cure rate, swelling ratio, glass transition temperature and mechanical properties, while increasing gel content. Recycling improved the mechanical properties of epoxy vitrimers but decreased the swelling ratio and elongation at break.
Article
Biochemistry & Molecular Biology
Jie Gong, Fan Jing, Ruikang Zhao, Chenxuan Li, Jun Cai, Qingjun Wang, Hongfeng Xie
Summary: The application of crumb rubber and waste cooking oil in road pavements is economically and environmentally significant. The compatibility between crumb rubber and asphalt binder limits the allowable construction time of epoxy asphalt rubber binders. This study investigates the use of waste cooking oil to improve the viscosity, construction time, and compatibility of the asphalt rubber.
Article
Chemistry, Physical
Junsheng Zhang, Rui Wang, Ruikang Zhao, Fan Jing, Chenxuan Li, Qingjun Wang, Hongfeng Xie
Summary: The study utilized graphene oxide to enhance the bonding strength and toughness of the epoxy asphalt bond coat. The addition of GO improved the hydrophobicity of the unmodified EABC and extended the allowable construction time. Additionally, GO enhanced the stiffness and mechanical properties of the unmodified EABC, particularly at 60 degrees C.
Article
Construction & Building Technology
Ruikang Zhao, Fan Jing, Chenxuan Li, Rui Wang, Zhonghua Xi, Jun Cai, Qingjun Wang, Hongfeng Xie
Summary: Graphene nanoplatelets (GNPs) were used to modify warm-mix epoxy asphalt binder (WEAB) to improve the toughness and resistance to fatigue cracking. The presence of GNPs enhanced the thermal stability of the mixture, but increased viscosity and shortened construction time. GNPs dispersed in the asphalt phase and altered the phase-separated morphology. GNPs significantly improved the mechanical properties of the mixture.
MATERIALS AND STRUCTURES
(2022)
Article
Polymer Science
Fan Jing, Rui Wang, Ruikang Zhao, Chenxuan Li, Jun Cai, Guowei Ding, Qingjun Wang, Hongfeng Xie
Summary: This study aimed to reinforce the epoxy asphalt bond coat (EABC) with graphene nanoplatelets (GNPs) to improve the mechanical and bonding strengths. The inclusion of GNPs lowered the viscosity of EABC, extended the construction time, and enhanced the hydrophobicity. The storage modulus, crosslinking density, and glass transition temperatures of both asphalt and epoxy in EABC increased with the addition of GNPs, leading to improved mechanical and bonding properties.
Article
Chemistry, Multidisciplinary
Yi-Li Liu, Si-Yuan Yu, Jia-Hao Chen, Cheng-Shuang Wang, Heng-Ye Li, Dechen Jiang, Deju Ye, Wei-Wei Zhao
Summary: Single-cell interrogation using solid-state nanoprobes allows for understanding the connection between cellular behavior and heterogeneity. A generic ionic current rectification (ICR) single-cell methodology is developed based on the charge property of the organic molecular probe (OMP), enabling subcellular detection of glutathione (GSH) with high selectivity, sensitivity, and recyclability.
Article
Chemistry, Multidisciplinary
Ge Gao, Jia-Hao Chen, Ming-Jian Jing, Jin Hu, Qin Xu, Cheng-Shuang Wang, Hong Zhou, Peng Lin, Guangxu Chen, Wei-Wei Zhao
Summary: This study addresses the challenge of achieving maximum transconductance (g(m)) at zero gate bias (V-G) in organic electrochemical transistors. By utilizing unique light-matter interplay in the newly emerged technique of organic photoelectrochemical transistor (OPECT), a dual-ligand photosensitive metal-organic framework (DL-PS-MOFs)/TiO2 nanorods (NRs) gated poly(ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) OPECT is developed, demonstrating enhanced performance with maximum g(m) at zero V-G. The device is further biologically interfaced with a miRNA-triggered growth of DNA spheres for sensitive miRNA-21 detection.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Jia-Hao Chen, Cheng-Shuang Wang, Zheng Li, Jin Hu, Si-Yuan Yu, Yi-Tong Xu, Peng Lin, Wei-Wei Zhao
Summary: In this study, a poly(1,4-diethynylbenzene) (pDEB)/NiO enhancement-mode organic photoelectrochemical transistor (OPECT) was developed for highly sensitive bioelectronic detection. The developed biosensor showed a linear range of 70 fg mL-1-10 ng mL-1 and a low detection limit of 28.5 fg mL-1.
ANALYTICAL CHEMISTRY
(2023)
