Article
Polymer Science
Madalina Ioana Necolau, Celina Maria Damian, Elena Olaret, Horia Iovu, Brindusa Balanuca
Summary: This study investigates the properties of bio-based polymeric matrices obtained by crosslinking epoxidized linseed oil (ELO) with different activators. The results show that ELO_CA material, formed by using citric acid and THF as activators, exhibits higher thermal stability and glass transition temperature. Additionally, the crosslink density, storage modulus, mechanical properties, and water affinity of these materials are discussed.
Article
Polymer Science
Tuyara V. Petrova, Ilya V. Tretyakov, Alexey V. Kireynov, Alexey V. Shapagin, Nikita Yu. Budylin, Olga V. Alexeeva, Betal Z. Beshtoev, Vitaliy I. Solodilov, Gleb Yu. Yurkov, Alexander Al. Berlin
Summary: This study investigates the modification of epoxy resin with polysulfone and active diluent furfuryl glycidyl ether. The results show that heterogeneous structures are formed during the curing process, depending on the concentration of the active diluent and the type of hardener. The physico-mechanical properties of the hybrid matrices are determined by the formed structures, with thermoplastic-enriched matrix-interpenetrating structures providing the highest resistance to crack propagation.
Article
Chemistry, Multidisciplinary
Jingyu Li, Haichao Zhao, Guoxin Sui
Summary: Hydrosilylation epoxidized eugenol (HSI-EP-EU) is synthesized and used as a reactive diluent for epoxy/anhydride and epoxy/imidazole curing systems. HSI-EP-EU demonstrates good dilution effects, antibacterial properties, and improved mechanical properties for the epoxy/imidazole system.
Article
Materials Science, Characterization & Testing
Fengfan Zhu, Qinghe Fu, Min Yu, Jiancheng Zhou, Naixu Li, Fang Wang
Summary: A series of multifunctional castor oil-based epoxy resins, including methoxy castor oil polyglycidyl ether (MOCOGE), allyloxy castor oil polyglycidyl ether (AOCOGE), and castor oil-based non-glycidyl ether (CONGE), were designed to broaden the application of bisphenol A epoxy resin E-51. The research showed that adding these castor oil-based epoxy resins significantly improved the flexibility, toughness, and mechanical strength of E-51. The tensile strength, elongation at break, and impact strength of E-51 increased when blended with the castor oil-based epoxy resins.
Article
Polymer Science
David Alejandro Gonzalez Martinez, Enrique Vigueras Santiago, Susana Hernandez Lopez
Summary: By optimizing the carbonation of epoxidized linseed oil containing CC5 groups, high conversion, carbonation, and selectivity values can be achieved. Higher temperature and pressure lead to increased conversion but decreased selectivity, while increasing catalyst concentration favors selectivity. The presence of a secondary mechanism involving the formation of a carboxylate ion was demonstrated through spectroscopic analysis.
Article
Agricultural Engineering
Maoping Lyu, Xiangyu Yang, Jing Li, Fei Xie, Hebo Shi, Xinhu Gong, Xusheng Huang, Dandi Fang, Chaoqun Zhang
Summary: Developing novel multifunctional polymeric materials from biomass to replace traditional electric encapsulation materials is significant for energy consumption and sustainable development. This study prepared bio-based epoxy thermosets from different epoxidized plant oils and investigated their properties and structure. Among them, soybean oil-based thermoset showed superior performance and was identified as a suitable candidate for encapsulation materials.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Materials Science, Multidisciplinary
Tolibjon S. Omonov, Vinay R. Patel, Jonathan M. Curtis
Summary: This work presents a model biobased epoxy thermoset resin that incorporates epoxidized linseed oil fatty acid methyl esters (ELOMEs) and trimellitic anhydride (TMA) as a curing agent. The study investigates the effects of different molar ratios of ELOME and TMA on the storage moduli, glass-transition temperatures, and thermomechanical properties of the resulting thermosets. The results indicate that the concentration of the curing agent influences the crosslinking density and affects the formation of the cross-linked network, while the use of ELOME/ELO mixtures leads to an improvement in the thermomechanical properties due to the branched triacylglycerol structure of epoxidized linseed oil.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Textiles
M. Megahed, Sherif M. Youssef, Soliman S. Ali-Eldin, M. A. Agwa
Summary: The study aimed to reduce the viscosity of epoxy resin by adding ethanol and TiO2 nanoparticles, thus decreasing processing time. Results showed that increasing ethanol percentage lowered resin viscosity and reduced processing time. Besides, the addition of ethanol and TiO2 nanoparticles improved tensile strength and flexural properties of the glass fiber reinforced epoxy composites.
FIBERS AND POLYMERS
(2021)
Article
Polymer Science
Kang Yang, Yongping Niu, Xiaowei Wang, Sanming Du, Yongzhen Zhang, Junkai Zhang, Junqing Cai
Summary: This study aims to improve the tribological properties of epoxy resins by combining self-lubrication and auto-healing. Linseed oil microcapsules with good thermal stability were successfully prepared and incorporated into the resin. The composite coating exhibited outstanding self-lubricating properties, reducing the coefficient of friction and wear rate. The formation of a uniform lubricating film and the release of linseed oil contributed to the improved wear resistance and prolonged the life of the coating.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Applied
Gan Cui, Feiyu Chen, Chuchu Zhang, Jianguo Liu, Xiao Xing, Zili Li
Summary: In this study, two-component microcapsules were prepared using benzotriazole (BTA) and linseed oil as core material and poly(urea-formaldehyde) as shell material. The effects of stirring speed, temperature, emulsifier type and amount, core/shell mass ratio, and initial pH on the microcapsule structure and properties were investigated, and an optimum preparation process was determined. Graphene oxide (GO) was added to enhance the shell stability of the microcapsules, and the optimal GO content was determined through microscopic observation. The prepared microcapsules exhibited an encapsulation rate of 83.44%. The microcapsules were embedded into epoxy coating and their self-healing and anticorrosion performances were optimized through scratch test and salt spray test and electrochemical impedance spectroscopy. The damaged graphene-based two-component self-healing coating showed an impedance modulus of 1.29 × 10(9) Ω·cm(2) after repair, which lasted for 24 hours.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2023)
Article
Polymer Science
Dana Luca Motoc, Jose Miguel Ferri, Santiago Ferrandiz-Bou, Daniel Garcia-Garcia, Rafael Balart
Summary: This study focused on the development of flax and flax/basalt hybrid reinforced composites using epoxidized linseed oil resin, with different ratios of glutaric anhydride and maleinized linseed oil in the hardener system. The addition of glutaric anhydride resulted in hard and brittle laminates, while increasing MLO content led to a decrease in brittleness of the crosslinked resin. The thermal analysis showed shifts in glass transition temperatures and final degradation temperatures with varying MLO content.
Article
Materials Science, Multidisciplinary
Nikita Reinhardt, Jonas M. Breitsameter, Klaus Drechsler, Bernhard Rieger
Summary: This study introduces a fully bio-based epoxy thermoset using epoxidized linseed oil and tannic acid, which exhibits high glass transition temperature, stiffness, and strength, making it a potential bio-based substitute for petrochemical-based epoxy resins in high-performance applications.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Polymer Science
Diego Lascano, Alejandro Lerma-Canto, Vicent Fombuena, Rafael Balart, Nestor Montanes, Luis Quiles-Carrillo
Summary: The curing process of epoxy resin based on epoxidized linseed oil (ELO) was studied using dynamic differential scanning calorimetry (DSC) to determine the kinetic triplet. It was found that the epoxy resins crosslinking is a multi-step process, but the curing kinetics can be simplified to a single-step process with a high proportion of autocatalytic process.
Article
Materials Science, Multidisciplinary
Elham Katoueizadeh, Seyed Mojtaba Zebarjad, Kamal Janghorban
Summary: Using UFMs containing an oxidizable oil phase modified by APTES has shown to enhance the toughness of epoxy composites. The presence of functionalized UFMs resulted in improved fracture toughness and morphology compared to non-functionalized UFMs, with part of the microcapsule shell remaining in the matrix after fracture.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Construction & Building Technology
Tao Ai, Hua Pang, Xuanxuan Wu, Danni Zhong, Kun Yang, Xin Yan, Yanhui Niu
Summary: Waterborne epoxy-resin-emulsified asphalt (WEREA) was modified using oxidized furfural extract oil, which significantly improved its mechanical properties and aging resistance, especially the elongation at break.
Article
Polymer Science
F. Fotoohi, A. Salimi, H. Bouhendi, K. Kabiri
Article
Engineering, Environmental
Zeinab Karami, Parvin Naderi, Kourosh Kabiri, Mohammad Jalal Zohuriaan-Mehr
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2020)
Article
Polymer Science
Parvin Naderi, Kourosh Kabiri, Reza Jahanmardi, Mohammad Jalal Zohuriaan-Mehr
Summary: In this study, novel IA-GMA and IA-ECH materials were synthesized by modifying itaconic acid (IA), and used for the preparation of superabsorbent polymers (SAP). IA-GMA acted as an internal crosslinker to enhance water absorbency of SAP, while IA-ECH served as an external crosslinker to improve gel strength and water absorption capacity.
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2021)
Article
Polymer Science
Z. Palizban, K. Kabiri, M. J. Zohuriaan-Mehr, N. Moini, A. Jahandideh
Summary: Antibacterial absorbent fabrics were prepared by immersing polyester cotton fabrics in a solution containing novel functional acrylic monomers and various antibacterial agents. The modified fabric showed good absorbency and antibacterial properties, with a significant increase in swelling capacity in distilled water. The antibacterial behavior of the fabrics against Staphylococcus aureus was also reported to be efficient.
Article
Polymer Science
Nasrin Moini, Kourosh Kabiri
Summary: This study focuses on the recycling of fine acrylate-based Superabsorbent Polymer (SAP) particles using silicone-based coupling agents. The recycled SAP particles exhibit no deterioration in properties and even show increased gel strength under stress. The analysis reveals a well-attached porous structure of the recycled SAP particles, maintaining their integrity.
Article
Materials Science, Textiles
Ali Sadeghianmaryan, Saman Naghieh, Ali Salimi, Kourosh Kabiri, Monica A. Cella, Ali Ahmadi
Summary: Novel wound dressings with antibacterial activity were fabricated using the coating technique, and microwave techniques were employed to enhance fibroblast cell viability. Physical, mechanical, and antibacterial tests showed that the coated nonwoven with layers of hydrogels possessed the desired strength, breathability, flexibility, and wettability. The results suggest that the fabricated structures have potential applications in wound dressing.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Polymer Science
Fatemeh Shahkarami, Kourosh Kabiri, Farideh Piri, Nasrin Moini, Arash Jahandideh
Summary: Green chemistry is crucial for mitigating global warming and environmental pollution. This study synthesized conductive and asymmetric star-shaped biobased oligomers from bio-sourced resin using microwave irradiation. The resulting oligomers exhibited high thermal stability and conductivity. This functional structure has potential applications in tissue engineering and biobased adhesives.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Polymer Science
Zohreh Mohammadhashemi, Mohammad Jalal Zohuriaan-Mehr, Reza Jahanmardi
Summary: This study reports a facile and nearly quantitative synthesis of a novel partially bio-based Schiff base modifier for surface modification of commercial superabsorbent polymer (SAP) hydrogels. The modified SAP showed improved saline absorbency and antibacterial activity, making it a potential candidate for biomedical applications.
Article
Biotechnology & Applied Microbiology
Ali Salimi, Nejat Kheiripour, Ali Fathi Jouzdani, Hassan Ghasemi, Sara Soleimani Asl, Abolfazl Ghafouri-Khosrowshahi, Akram Ranjbar
Summary: This study evaluated the effect of nanocurcumin and curcumin on liver toxicity induced by aluminum phosphide. It was found that nanocurcumin significantly protected the liver against the toxic effects and had a more pronounced protective effect compared to curcumin.
BIOMED RESEARCH INTERNATIONAL
(2022)
Article
Polymer Science
Roghayeh Khaleghi Qusheh Bolagh, Ali Salimi, Kourosh Kabiri, Alireza Pourali
Summary: In this study, two types of aromatic monomers with high refractive index (RI) were developed and combined with a newly synthesized oligomer to develop a UV-curing adhesive. The results showed that the composition containing the oligomer had improved thermal stability and high glass transition temperature. The adhesion strength was also positively affected, and the refractive index value was suitable for most applications in optoelectronics.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Alireza Sabzevari, Maryam Alayi, Kourosh Kabiri, Mohammad Jalal Zohuriaan Mehr
Summary: In this study, a reactive diluent (D-1) derived from phthalic acid was synthesized to replace styrene in epoxy acrylate resin. The diluent D-1 showed better performance in reducing the viscosity of the resin compared to deactivated diluent D-p and styrene. It also improved the rheological properties, thermal stability, and mechanical properties of the resin.
Article
Biochemistry & Molecular Biology
Saeed Jafarkhani, Mehrdad Khakbiz, Ghasem Amoabediny, Javad Mohammadi, Mohammad Tahmasebipour, Hodjattallah Rabbani, Ali Salimi, Ki-Bum Lee
Summary: Dedifferentiation of vascular smooth muscle cells (VSMCs) from a functional phenotype to an inverse synthetic phenotype is an important symptom of cardiovascular disorders. The sympathetic nervous system (SNS) plays a crucial role in regulating the differentiation and maintenance of VSMCs' contractile gene expression. However, the molecular mechanisms involved in this process are not well understood. This study used a novel in vitro co-culture method to investigate the effects of sympathetic neurons on VSMCs differentiation and found that sympathetic innervation promotes VSMCs' contractile gene expression and functional phenotype maintenance.
BIOORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
A. Abbasi, A. Salimi, H. Bouhendi, M. Karimi
Summary: The addition of glycidoxy propyl POSS (GPOSS) nanoparticles and alumina microparticles into a two-part epoxy adhesive resulted in improved glass transition temperature (Tg), thermal stability, and adhesion strength. The dispersion of the fillers in the adhesive samples was characterized, showing weaker dispersion for highly loaded alumina and/or GPOSS filled compositions. DSC thermograms revealed lower heat of cure and higher onset cure temperatures in all compositions compared to neat epoxy resin.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Polymer Science
F. Shahkarami, N. Moini, K. Kabiri, F. Piri, A. Jahandideh
Summary: Multitask star-shaped oligoaniline (S-TAH), synthesized through a three-step microwave irradiation process, showed excellent performance as a multitask hardener for bisphenol A-based epoxy resin. It exhibited improved thermal stability, increased char yield, and representative storage moduli in glassy and rubbery states. Furthermore, it demonstrated good electrical conductivity and can be applied in various applications such as thermal resistance anticorrosive coatings and conductive adhesives.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Veterinary Sciences
Ali Salimi, Mohsen Eslami, Farhad Farrokhi-Ardabili
Summary: The study finds that different concentrations of trans-ferulic acid have both positive and negative effects on ram semen during cold storage.
VETERINARY MEDICINE AND SCIENCE
(2023)
Article
Polymer Science
Zhongming Yuan, Hiroko Yamamoto, Shinji Kanehashi, Takeshi Shimomura
Summary: This study reports the synthesis of a flexible light-emitting polymer film using a solution blending method. The selective positioning of MEH-PPV molecules in the PS phase of the film was confirmed. The film exhibited a nanometer-scale luminescent domain with low aggregation quenching and showed good elastomeric characteristics.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2024)
