|
1
|
Demski S, Brząkalski D, Gubernat M, Dydek K, Czaja P, Żochowski K, Kozera P, Krawczyk Z, Sztorch B, Przekop RE, Marczak M, Ehrlich H, Boczkowska A. Nanocomposites Based on Thermoplastic Acrylic Resin with the Addition of Chemically Modified Multi-Walled Carbon Nanotubes. Polymers (Basel) 2024; 16:422. [PMID: 38337311 DOI: 10.3390/polym16030422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/28/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
The main goal of this work was an improvement in the mechanical and electrical properties of acrylic resin-based nanocomposites filled with chemically modified carbon nanotubes. For this purpose, the surface functionalization of multi-walled carbon nanotubes (MWCNTs) was carried out by means of aryl groups grafting via the diazotization reaction with selected aniline derivatives, and then nanocomposites based on ELIUM® resin were fabricated. FT-IR analysis confirmed the effectiveness of the carried-out chemical surface modification of MWCNTs as new bands on FT-IR spectra appeared in the measurements. TEM observations showed that carbon nanotube fragmentation did not occur during the modifications. According to the results from Raman spectroscopy, the least defective carbon nanotube structure was obtained for aniline modification. Transmission light microscopy analysis showed that the neat MWCNTs agglomerate strongly, while the proposed modifications improved their dispersion significantly. Viscosity tests confirmed, that as the nanofiller concentration increases, the viscosity of the mixture increases. The mixture with the highest dispersion of nanoparticles exhibited the most viscous behaviour. Finally, an enhancement in impact resistance and electrical conductivity was obtained for nanocomposites containing modified MWCNTs.
Collapse
Affiliation(s)
- Szymon Demski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland
| | - Dariusz Brząkalski
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland
| | - Maciej Gubernat
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Kamil Dydek
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland
| | - Paweł Czaja
- The Aleksander Krupkowski Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta St., 30-059 Kraków, Poland
| | - Konrad Żochowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland
| | - Paulina Kozera
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland
| | - Zuzanna Krawczyk
- Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Station 12, CH-1015 Lausanne, Switzerland
| | - Bogna Sztorch
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland
| | - Robert Edward Przekop
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland
| | - Michał Marczak
- Faculty of Mechanical and Industrial Engineering, Warsaw University of Technology, 85 Narbutta St., 02-524 Warsaw, Poland
| | - Hermann Ehrlich
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland
| | - Anna Boczkowska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland
| |
Collapse
|
|
2
|
Karandikar SS, Metze BE, Roberts RA, Stuart DR. Oxidative Cycloaddition Reactions of Arylboron Reagents via a One-pot Formal Dehydroboration Sequence. Org Lett 2023; 25:6374-6379. [PMID: 37610877 DOI: 10.1021/acs.orglett.3c02379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Arylboron compounds are widely available and synthetically useful reagents in which the boron group is typically substituted. Herein, we show that the boron group and ortho-hydrogen atom are substituted in a formal cycloaddition reaction. This transformation is enabled by a one-pot sequence involving diaryliodonium and aryne intermediates. The scope of arylboron reagents and arynophiles is demonstrated, and the method is applied to the formal synthesis of an investigational drug candidate.
Collapse
Affiliation(s)
- Shubhendu S Karandikar
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Bryan E Metze
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Riley A Roberts
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - David R Stuart
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| |
Collapse
|
|
3
|
Ito M, Yamabayashi Y, Takishima Y, Higuchi K, Sugiyama S. Aryne Generation from <i>o</i>-Triazenylarylboronic Acids Induced by Brønsted Acid. Chem Pharm Bull (Tokyo) 2022; 70:566-572. [DOI: 10.1248/cpb.c22-00264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
|
4
|
Valiakhmetova OY, Kuznetsov VV. Conformational Analysis of
2-Isopropyl-5-methoxy-5-methyl-1,3,2-dioxaborinane in Chloroform Solution: Effect of
“Magic” Solvent Molecule. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021010036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
|
5
|
Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| |
Collapse
|
|
6
|
Ito M, Yamabayashi Y, Oikawa M, Kano E, Higuchi K, Sugiyama S. Silica gel-induced aryne generation from o-triazenylarylboronic acids as stable solid precursors. Org Chem Front 2021. [DOI: 10.1039/d1qo00385b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We developed o-triazenylarylboronic acids as stable solid aryne precursors, which generate arynes under mild conditions using silica gel as the sole reagent and undergo reactions with a range of arynophiles both in solution and in the solid-state.
Collapse
Affiliation(s)
- Motoki Ito
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | | | - Mio Oikawa
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | - Emi Kano
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | | | | |
Collapse
|