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Molecular Research of Nanocomposites: Design, Properties and Application

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: 20 March 2025 | Viewed by 822

Special Issue Editor

Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, China
Interests: design and construction of polymer-based nanocomposite and its application in ion selective separation and integrated circuit thermal management
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the rapid development of energy, electrical and electronic technologies, the rapid accumulation of heat in related equipment and components will inevitably result in a serious threat to their stabilities and reliabilities. Thermally conductive polymer nanocomposites offer new possibilities for replacing metal parts in several applications, including power electronics, electric motors and generators, heat exchangers, etc., thanks to the advantages of polymer such as light weight, corrosion resistance and ease of processing. Current interest in improving the thermal conductivity of polymers is focused on the selective addition of nanofillers with high thermal conductivity. High-performance thermal management materials for electronic devices are obtained by designing the structure of fillers in nanocomposites. The thermal conductivity of the composite material can be efficiently improved through the structural design of the thermal conductivity filler and the molecular structure design of the polymer substrate. Meanwhile, computational simulation (such as molecular dynamics simulation) is used to further analyze and verify the influence of structural design on the heat transfer mechanism. Synthesis, property characterization and application of materials should focus on biological or molecular research.

Dr. Bin Wu
Guest Editor

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Keywords

  • interfacial thermal resistance
  • polymer-based nanocomposites
  • polymers
  • thermal conductivity
  • thermal-interface materials

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Published Papers (1 paper)

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Research

26 pages, 35261 KiB  
Article
Magnesium-Doped Hydroxyapatite Nanofibers for Medicine Applications: Characterization, Antimicrobial Activity, and Cytotoxicity Study
by Ricardo Pascual Alanis-Gómez, Fabiola Hernández-Rosas, Juan David Olivares-Hernández, Eric Mauricio Rivera-Muñoz, Araceli Zapatero-Gutiérrez, Néstor Méndez-Lozano, José Rafael Alanis-Gómez and Rodrigo Velázquez-Castillo
Int. J. Mol. Sci. 2024, 25(22), 12418; https://doi.org/10.3390/ijms252212418 - 19 Nov 2024
Viewed by 513
Abstract
Magnesium-doped hydroxyapatite (HAp-Mg) nanofibers show promise for medical applications due to their structural similarity to bone minerals and enhanced biological properties, such as improved biocompatibility and antimicrobial activity. This study synthesized HAp-Mg nanofibers using a microwave-assisted hydrothermal method (MAHM) to evaluate their cytotoxicity, [...] Read more.
Magnesium-doped hydroxyapatite (HAp-Mg) nanofibers show promise for medical applications due to their structural similarity to bone minerals and enhanced biological properties, such as improved biocompatibility and antimicrobial activity. This study synthesized HAp-Mg nanofibers using a microwave-assisted hydrothermal method (MAHM) to evaluate their cytotoxicity, biocompatibility, and antimicrobial efficacy compared to commercial hydroxyapatite (HAp). Characterization through X-ray diffraction (XRD), scanning electron microscopy (SEM), Transmission Electron Microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), and Fourier transform infrared spectroscopy (FTIR) confirmed the successful incorporation of magnesium, producing high-purity, crystalline nanofibers with hexagonal morphology. Rietveld refinement showed slight lattice parameter shortening, indicating Mg2+ ion integration. Cell viability assays (MTT and AlamarBlue) revealed a significant increase in fibroblast proliferation with 2% and 5% HAp-Mg concentrations compared to controls (p < 0.05), demonstrating non-cytotoxicity and enhanced biocompatibility. Antimicrobial tests (disk diffusion method, 100 µg/mL) showed that HAp-Mg had strong antibacterial effects against Gram-positive and Gram-negative bacteria and moderate antifungal activity against Candida albicans. In contrast, commercial HAp showed no antimicrobial effects. These results suggest HAp-Mg nanofibers have significant advantages as biomaterials for medical applications, particularly in preventing implant-related infections and supporting further clinical development. Full article
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