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Structural properties of nanocomposites based on resole-type phenol-formaldehyde oligomers and detonation nanodiamonds |
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| Authors: | Valentina Shkodich Nadezhda Temnikova Irina Boyko Heinrich Leicht Eduard Kraus Natalia Shkodich Oleg Stoyanov |
| Affiliation: | 1. Kazan National Research Technology University, Karl Marx 68, 420015 Kazan, Russian Federation;2. SKZ-German Plastic Center, Friedrich-Bergius-Ring 22, 97076 Wuerzburg, Germany;3. Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russian Federation
Center of Functional Nano-Ceramics, National University of Science and Technology MISIS, 119049 Moscow, Russian Federation |
| Abstract: | Using the methods of infrared spectroscopy (IRS) and X-ray photoelectron spectroscopy (XPS), it was shown that short-term high-energy machining of detonation nanodiamonds (DND) leads to structural changes in the crystal structure and functional composition of the surface layer on particles. The possibility of spontaneous formation for stable colloidal systems with a narrow size distribution of mechanically activated DND in phenol-formaldehyde oligomers (PFO) was established. By molecular spectroscopy it was revealed that π → π* interactions of the aromatic rings of PFO are caused by orientational phenomena as a result of hydrogen bonds between an activated DND surface and functional groups of PFO. The effect of DND concentration on the curing reaction parameters ofpsgr the phenol-formaldehyde oligomer was determined by differential scanning calorimetry (DSC). The concentration effect of mechanically activated nanodiamonds on the physical and mechanical characteristics of a composite material based on phenol-formaldehyde binder and polyamide paper (Nomex) was studied. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48582. |
| Keywords: | detonation nanodiamonds high-energy machining intermolecular interactions resole phenol-formaldehyde oligomer segmental mobility |