Article
Chemistry, Physical
Eva Skoura, Peter Bohac, Martin Barlog, Helena Palkova, Andreas Mautner, Larysa Bugyna, Helena Bujdakova, Juraj Bujdak
Summary: The poly(caprolactone) was modified with a thin nanocomposite layer consisting of organoclay and photoactive dye, PhB. Electron microscopy, water contact angle measurements, X-ray diffraction, and various spectroscopies were used to characterize the surface properties and composition of the nanocomposite layer. The films exhibited photoactive and antimicrobial properties.
APPLIED CLAY SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Xu Yang, Suisui He, Jun Wang, Ying Liu, Hua Wei
Summary: In this study, a multifunctional nanocomposite hydrogel with self-healing and photo-thermal properties was developed as an antibacterial adhesive for the successful treatment of chronic diabetic wounds. The optimized hydrogel formulation exhibited excellent antibacterial efficacy, free radical scavenging capability, and photo-thermal properties, along with viscoelastic characteristics, in vitro degradation properties, good adhesion, and selfadaptation capacity. In vivo wound healing experiments confirmed the superior performance of the developed hydrogels in promoting the healing of infected chronic wounds compared to a commercially available dressing.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Composites
Jiyong Luo, Qin Tian, Shuhao Qin, Yating Qi, Jiali Li, Daohai Zhang
Summary: Nanocomposites composed of polypropylene, organoclay, ethylene acrylic acid, and maleic anhydride-grafted polypropylene were prepared and their thermal stability properties were investigated. The addition of organoclay improved the thermal stability and mechanical properties of the nanocomposites.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Engineering, Environmental
Marcela Pfeifer, Flavio A. C. Andrade, Ricardo Bortoletto-Santos, Fauze A. Aouada, Caue Ribeiro
Summary: This study investigated the effect of different surface-charged lamellar materials on the swelling and diffusion properties of synthesized polyacrylamide-methylcellulose hydrogels. Results showed that the presence of lamellar nanoparticles in hydrogels made the polymer matrix more rigid, and less likely to absorb water. However, hydrogels with hydrotalcite at specific ratios exhibited anomalous behavior with an increase in their water absorption capacity. This research suggests that the developed nanocomposite hydrogels can be suitable candidate materials for controlled release applications.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Nanoscience & Nanotechnology
Seon Ju Lee, Moon Young Choi, Lee Ku Kwac, Hong Gun Kim, Jin-Hae Chang
Summary: In this study, organoclays with different alkyl chain lengths were dispersed in poly(amic acid) (PAA) and polyimide (PI) hybrid films were prepared. The effects of organoclay content on the thermal, morphological, and optical properties of the hybrid films were investigated.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Soni Ngadong, Tani Chekke, Ringshar Narzary, Sayan Bayan, Upamanyu Das
Summary: A nanocomposite consisting of CuO and PVDF-HFP has been fabricated for flexible piezoelectric nanogenerators. The incorporation of optimal CuO nanostructures in PVDF-HFP increases the output voltage of the nanogenerator. Furthermore, the nanogenerator exhibits high power and can be enhanced under illumination condition.
Article
Polymer Science
Sara Shafiee, Leila Bazli, Mohammad Karrabi, Mir Hamid Reza Ghoreishy, Milad Bazli
Summary: The effects of NBR polarity and organoclay addition on the properties of an NBR/phenolic resin blend were investigated. It was found that good distribution of nanoparticles and compatibility between NBR and phenolic resin improved the rheological and tensile properties. The addition of organoclay increased the tensile strength of the blends, while increasing nanoparticle concentration reduced the deterioration in tensile properties and Young's modulus.
Article
Materials Science, Multidisciplinary
Chien-Wei Chu, Yucheng Zhang, Kakeru Obayashi, Ken Kojio, Atsushi Takahara
Summary: The study investigates the effect of organoclay reinforcement on the adhesion and fatigue behaviors of epoxy nanocomposite adhesives through single-lap shear tests and fatigue tests, finding that the addition of MMT can improve shear strength and prolong fatigue life.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Yi Wang, Hongyan Ouyang, Yuanjie Xie, Yinan Jiang, Lijuan Zhao, Wanliu Peng, Junliang Wu, Ji Bao, Yong Liu, Jinrong Wu
Summary: This study develops a strategy to construct PHEMA-based hydrogels with exceptionally high tensile strength, elastic modulus, and toughness by introducing coordination interactions and suppressing phase separation. These hydrogels show comparable mechanical properties to human nasal and auricular cartilage, and exhibit outstanding self-recovery properties and fatigue resistance.
Article
Materials Science, Multidisciplinary
Aditi Nain, Sanjay Dahiya, Rishi Pal Chahal, Ekta Dhanda
Summary: PVA/CdS nanocomposites with varying amounts of CdS NPs were synthesized in PVA using a chemical reduction method and exposed to UV irradiation for different durations. The presence of CdS NPs in PVA was confirmed by an absorption peak around 450 nm. UV exposure resulted in a red shift in the absorption spectra, indicating an increase in particle size. The transmittance of PVA decreased after NP embedding and further decreased with UV exposure, suggesting potential use in UV-blocking devices. The band gap of PVA decreased with increasing NPs and UV exposure time. The refractive index of PVA increased after embedding CdS NPs, which further increased with higher NP concentration and longer UV exposure. Structural changes in PVA were analyzed by FTIR, and the presence and distribution of NPs were confirmed by FE-SEM and EDS analysis. The photoluminescence spectrum exhibited the quantum confinement effect of CdS NPs in the polymer matrix. The thermal properties of the nanocomposite films were investigated by DSC and TG. The dependence of electrical parameters on NP concentration and UV exposure time was studied, and the formation of charge-transfer complexes inside the matrix was proposed as an explanation.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Ahmed El-Refaey, Yoshihiro Ito, Masuki Kawamoto
Summary: This study developed a nanocomposite hydrogel incorporating graphene sheets, which significantly improves the mechanical properties of hydrogels. The nanofiller enhances the tensile stress and fracture stress of the hydrogel through chemical and physical interactions.
Article
Pharmacology & Pharmacy
Celso R. N. Jesus, Eduardo F. Molina, Ricardo de Oliveira, Sandra H. Pulcinelli, Celso V. Santilli
Summary: This paper investigates the influence of modified organoclay, Cloisite((R)) 20A (MMTA) on the structure and drug release properties of ureasil organic-inorganic hybrid. The presence of MMTA in the hybrid matrix affects the crystallite growth and causes the formation of water channels, leading to increased drug release. The design of ureasil-MMTA nanocomposites with modified nanoclay provides tunable properties for versatile biomedical applications.
Article
Materials Science, Composites
Marta Zaccone, Irene Kociolek, Alberto Frache, Costanzo Bellini, Vittorio Di Cocco, Marco Monti
Summary: This paper evaluates the abrasion resistance of a carbon fiber composite filled with layered-silicate clay nanoparticles. The study investigates the dispersion and performance of the clay-epoxy nanocomposite, and determines the optimal content for fiber composite production. The nanocomposite mixture is prepared by dispersing clay nanoparticles in the epoxy monomer, followed by vacuum infusion to produce the fiber reinforced composite. The presence of nanoclay reduces weight loss and damage on the impacted surface.
POLYMER COMPOSITES
(2023)
Review
Polymer Science
Cristina Cazan, Alexandru Enesca, Luminita Andronic
Summary: TiO2 nanocomposites as reinforcement agents significantly enhance mechanical properties, with filler size playing a crucial role. The increase in interfacial area due to small fillers leads to the generation of an interface polymer volume fraction with properties different from bulk polymer, even at low loadings. The paper focuses on the influence of composition and technological parameters on the mechanical strength of TiO2 nanocomposites with polymeric matrix.
Article
Polymer Science
Miguel A. Garcia-Munoz, Mario Valera-Zaragoza, Andres Aguirre-Cruz, Roselis Carmona-Garcia, Aurelio Ramirez-Hernandez, Eduardo Ramirez-Vargas, Saul Sanchez-Valdes
Summary: This study presents the thermal and flammability properties of ethylene vinyl acetate/starch/organoclay (EVA/S/C20A) nanocomposites. The nanostructured systems were observed through wide-angle X-ray diffraction and field emission scanning electron microscopy. The intercalation of organoclay layers with EVA polymer achieved compatibility between the three components, providing thermal degradation protection. The nanocomposites showed self-extinguishing capacity in the flammability tests, attributed to the nanointercalation of clay and the compatibility among the components.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2023)
Article
Polymer Science
Mohsen Hajibeygi, Hosein Jafarzadeh
Article
Polymer Science
Mohsen Hajibeygi, Navid Habibnejad, Meisam Shabanian, Hossein Ali Khonakdar
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Masoumeh Mousavi, Meisam Shabanian, Henri Vahabi
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Polymer Science
Mohsen Hajibeygi, Navid Habibnejad, Meisam Shabanian, Hossein Ali Khonakdar
Summary: DODA was synthesized to prepare DOPA and modify Mg(OH)(2) nanoparticles for the fabrication of nanocomposites. The uniform dispersion of nanoparticles in the polymer matrix was observed, contributing to the enhanced thermal and combustion properties of the composites.
POLYMER INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Kambiz Hedayati, Davood Ghanbari, Mohsen Kord, Mojtaba Goodarzi
Summary: This study successfully prepared nano-magnetic materials using hydrothermal and sonochemical-assisted methods, and metal-doped nanostructures using wet chemical methods. Different metal doping was found to influence the shape and size of magnetic nanomaterials, with the nanocomposites exhibiting superparamagnetic properties. Under sonochemical irradiation, bubble production can create hot spots applicable for various applications, and the nanocomposites showed photo-catalyst properties in degrading azo dyes under UV irradiation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Masoumeh Mousavi, Meisam Shabanian, Navid Habibnejad, Henri Vahabi
Summary: A new ternary polypropylene hybride containing micro size magnesium oxide and nano size hydroxyapatite particles was prepared via melt blending technique. The distribution of HA nanoparticles in the PP matrix was uniform, improving the flame retardancy and mechanical properties of the material.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Leila Abbasi, Kambiz Hedayati, Davood Ghanbari
Summary: The study prepared polyaniline-lead ferrite, polyaniline-cobalt ferrite, and polyaniline/nickel ferrite thin layers for electromagnetic interference shielding. The new nanocomposites showed promising performance in reducing electromagnetic pollution effectively.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Composites
Mohsen Hajibeygi, Shayan Faramarzinia
Summary: The study investigated the preparation of polyamide nanocomposites (PANC) containing hydrazide-hydrazone groups and their lead ions adsorption efficiency. The results showed that PANC exhibited higher thermal resistance than neat PA in N-2 environment and the addition of FPMN efficiently increased the combustion resistance of the material.
POLYMER COMPOSITES
(2021)
Article
Engineering, Electrical & Electronic
Abolfazl Tavakkolian Farahani, Mojtaba Goodarzi, Kambiz Hedayati
Summary: In this study, gamma-Fe2O3 and CuO nanoparticles were synthesized using the precipitation method, and gamma-Fe2O3-CuO nanocomposites were successfully fabricated. The characterization analyses revealed the small particle size of the nanoparticles and the excellent photocatalytic properties of the nanocomposites.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Shayan Faramarzinia, Meisam Shabanian, Somayeh Norouzbahari, Jochen Meier-Haack
Summary: Hydrazide-hydrazone based polyamide (HHPA) and surface modified hydroxyapatite (SMHA) were successfully synthesized and used to fabricate PLA nanocomposites with enhanced heat and combustion resistance, mechanical strength, and gas barrier properties. The synergistic effect of SMHA and HHPA significantly improved the performance of PLA.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Mohsen Hajibeygi, Aliasghar Javadi-gharyesafa
Summary: New polyamide/clay-layered double hydroxide nanocomposites (PACLN) were successfully prepared and characterized for their thermal and combustion properties. The results showed that PACLN exhibited improved heat resistance and thermal stability due to the effective dispersion of clay-layered double hydroxide nanosheets in the polyamide matrix.
POLYMER INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Shayan Faramarzinia, Meisam Shabanian, Somayeh Norouzbahari, Jochen Meier-Haack
Summary: This study investigates the synthesis of hydrazide-hydrazone based polyamide (HHPA) and the surface modification of hydroxyapatite nanoparticles (HAN) for the preparation of polylactic acid (PLA)/HAN/HHPA nanocomposites. The results show that the introduction of HHPA and SMHA improves the heat resistance, combustion resistance, mechanical strength, and gas barrier properties of the PLA nanocomposites.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Farzaneh Sharifi, Kambiz Hedayati, Davood Ghanbari
Summary: In this study, new polymeric aniline-barium ferrite and aniline-strontium ferrite thin layers were synthesized. Hexaferrite nano-additives were prepared using ultrasonic and microwave irradiation, and successfully incorporated into aniline as a polymeric matrix during electrochemical electrodeposition process.
MAIN GROUP METAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Fatemeh Saedi, Kambiz Hedayati
JOURNAL OF NANOSTRUCTURES
(2020)
Article
Nanoscience & Nanotechnology
Kambiz Hedayati, Marjan Joulaei, Davood Ghanbari
JOURNAL OF NANOSTRUCTURES
(2020)