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Solvent-Free One-Pot Synthesis of Epoxy Nanocomposites Containing Mg(OH)2Nanocrystal–Nanoparticle Formation Mechanism
- Source :
- Langmuir; 20220101, Issue: Preprints
- Publication Year :
- 2022
-
Abstract
- Epoxy nanocomposites containing Mg(OH)2nanocrystals (MgNCs, 5.3 wt %) were produced via an eco-friendly “solvent-free one-pot” process. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and thermogravimetric analysis (TGA) confirm the presence of well-dispersed MgNCs. HRTEM reveals the presence also of multisheet-silica-based nanoparticles and a tendency of MgNCs to intergrow, leading to complex nanometric structures with an intersheet size of ∼0.43 nm, which is in agreement with the lattice spacing of the Mg(OH)2(001) planes. The synthesis of MgNCs was designed on the basis of a mechanism initially proposed for the preparation of multisheet-silica-based/epoxy nanocomposites. The successful “in situ” generation of MgNCs in the epoxy via a “solvent-free one-pot” process confirms the validity of the earlier disclosed mechanism and thus opens up possibilities of new NCs with different fillers and polymer matrix. The condition would be the availability of a nanoparticle precursor soluble in the hydrophobic resin, giving the desired phase through hydrolysis and polycondensation.
Details
- Language :
- English
- ISSN :
- 07437463 and 15205827
- Issue :
- Preprints
- Database :
- Supplemental Index
- Journal :
- Langmuir
- Publication Type :
- Periodical
- Accession number :
- ejs59536237
- Full Text :
- https://doi.org/10.1021/acs.langmuir.2c00377