Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
In order to improve the interfacial properties of graphene oxide (GO) and epoxy resin (EP), hyperbranched polyesters with terminal carboxyl (HBP) non-covalently functionalized graphene oxide (HBP-GO) was achieved by strong π-π coupling between hyperbranched polyesters and GO nanosheets. The effects of non-covalent functionalization of GO on the dispersibility, wettability and interfacial properties were analyzed. The mechanical properties and enhancement mechanism of HBP-GO/EP composites were investigated. The results show that the hyperbranched polyesters is embedded in the GO layer due to its highly branched structure, which forms the steric hindrance effect between the GO nanosheets, effectively prevents the agglomeration of GO nanosheets, and significantly improved the dispersibility of GO. Simultaneously, the contact angle of HBP-GO with EP is reduced, the surface energy, interfacial energy and adhesion work are increased, then the wetting property of HBP-GO is significantly improved. The main toughening mechanism of HBP-GO is microcrack deflection induced by HBP-GO and plastic deformation of the EP matrix. In the microcrack propagation zones, HBP-GO may produce the pinning effect near the microcrack tips and change their stress state, resulting in microcrack deflection and bifurcation. So, the microcrack propagation path is more tortuous, which will consume much more fracture energy. Therefore, the mechanical properties of the HBP-GO/EP composites are greatly improved.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804070 | PMC |
| http://dx.doi.org/10.3390/ma12193103 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis and Biomedical Applications of PLA-HPG-Based Biodegradable Nanocarriers: A Review.
Biosensors (Basel)
August 2025
Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Sun Yat-sen University, Shenzhen 518107, China.
The development of biodegradable nanocarriers has long been a priority for researchers and medical professionals in the realm of drug delivery. Because of their inherent benefits, which include superior biocompatibility, customizable degradability, easy surface functionalization, and stealth-like behavior, polylactic acid-hyperbranched polyglycerol (PLA-HPG) copolymers have demonstrated a promising future in the field of biomedical research. The synthesis of PLA-HPG copolymers and the creation of their nanoparticles for biomedical uses have been the focus of current efforts.
View Article and Find Full Text PDFSynthesis of Hyperbranched Polyurethane Acrylate as Self-cleaning Protective Film on Solar Panel.
Chemistry
August 2025
Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, Hubei R&D Center of Hyperbranched Polymers Synthesis and Applications, South-Central Minzu University, Wuhan, 430074, China.
Renewable and green energy technologies, particularly the improvement of solar panel efficiency, have gained considerable attention in academic and industrial communities. However, long-term exposure to soiling can lead to substantial reduction in the energy generation capacity of photovoltaic systems. Here, hyperbranched polyurethane acrylate (PHBA) was synthesized using hydroxyl-terminated hyperbranched polyester as a core component.
View Article and Find Full Text PDFHigh-Performance Thin Film Composite Nanofiltration (NF) Membrane Constructed on Modified Polyvinylidene Fluoride (PVDF) Substrate.
Membranes (Basel)
July 2025
School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China.
The inherent hydrophobic nature of PVDF material renders it challenging to establish a stable aqueous hydration layer, thereby limiting its suitability as a substrate for the preparation of nanofiltration (NF) membranes. In this study, we developed a novel modification approach that effectively enhances the hydrophilicity of PVDF substrates through the incorporation of sulfonic acid-doped polyaniline (SPANI) and hyperbranched polyester (HPE) into the PVDF casting solution, followed by cross-linking with trimesoyl chloride (TMC). The introduction of SPANI and HPE, which contain reactive polar amino and hydroxyl groups, improved the hydrophilicity of the substrate, while the subsequent cross-linking with TMC effectively anchored these components within the substrate through the covalent linking between TMC and the reactive sites.
View Article and Find Full Text PDFEco-Friendly Synthesized Functionalized Magnetic Nanoparticles for the Trace Removal of Chromium Species: Kinetic and Isotherm Studies Coupled with Dual Detection via UV-Vis and ICP.
Langmuir
July 2025
Department of Civil and Environmental Engineering, Qatar University, 2713 Doha, Qatar.
This study explores the development and analysis of an eco-friendly one-step process for attaching iron oxide magnetic nanoparticles (MNPs) to a type of hyperbranched polyester commercially known as the "Boltorn H40" polymer. The research focuses on the application of this technique for extracting trace amounts of chromium ions [Cr(III) and Cr(VI)] with concentrations of less than 1 ppm. The elimination of Cr(VI) is of significant concern due to its severe toxicity and detrimental environmental impact.
View Article and Find Full Text PDFBiodegradable hyperbranched polyesters of trimethylolpropane with acrylate side chains enabling sustainable gel materials and nanomaterials for drug delivery applications.
J Mater Chem B
July 2025
Department of Chemistry, University of North Dakota, Grand Forks, ND 58202, USA.
To date, various biodegradable polymers have been synthesized due to the merits of biodegradable polymers in biomedical applications. The current widely used biodegradable polymers generally have linear structures, such as poly(lactic--glycolic acid) (PLGA), which prevents polymer crosslinking and polymer modification covalent conjugation, thus restricting their even broader applications. In this research, we report the synthesis and studies of new sustainable polymers consisting of biodegradable backbones and side chains, which endow the polymers with complete biodegradability, biocompatibility, crosslinking, and availability for covalent chemical modifications.
View Article and Find Full Text PDF