Carbon nanofibers (CNFs) are widely used to fabricate nanocomposites with enhanced properties. The emergent properties of the nanocomposites depend on the initial properties of the CNFs and how the fibers have been dispersed within the polymer matrix. This study looks at the fabrication of nanocomposites using dodecyl, butyl, and acetyl functionalized CNFs with cellulose acetate as the polymer matrix. The CNFs were prepared by electro-spinning, and functionalization was achieved using alkyl halides in the presence of lithium. Scanning Electron Microscopy (SEM) showed that the fibers were well embedded in the polymer Matrix, Thermal Gravimetric Analysis (TGA) of the nanocomposite revealed a slight increase in the degradation temperatures of the nanocomposites as compared to the blank sample, the aggregate loss of weight of the samples was about 80%. Dynamic Mechanical Analysis (DMA) of the nanocomposites showed increased stiffness and modulus storage by an average of 450MPa for butyl and dodecyl-functionalized CNFs, however, the storage modulus values of the nanocomposites generally decreased with an increase in temperature. The glass transition temperature of the nanocomposites was higher than that of the reference sample by an average of +36°C. Conductivity measurements of the nanocomposites showed no changes at lower frequencies of 1x102 - 4x104Hz. However, the values started increasing at peaked at 5x107Hz. The conductivity measurements revealed that the nanocomposites exhibited higher conductivity peaks at specific frequencies compared to the reference sample, indicating an enhanced electrical property of the nanocomposite. The study successfully fabricated nanocomposites with enhanced mechanical, thermal, and dielectric properties using functionalized CNFs.
| Published in | Advances in Materials (Volume 13, Issue 3) |
| DOI | 10.11648/j.am.20241303.13 |
| Page(s) | 55-63 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Carbon Nanofibers, Alkylation, Cellulose Acetate, Carbon Nanocomposites
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APA Style
Mukhebi, S. S., Otieno, G., Aluoch, A. O., Andala, D. M., Owour, J. (2024). Fabrication and Characterization of Alkyl-Functionalized CNFs/Cellulose Acetate Polymer Nanocomposites. Advances in Materials, 13(3), 55-63. https://doi.org/10.11648/j.am.20241303.13
ACS Style
Mukhebi, S. S.; Otieno, G.; Aluoch, A. O.; Andala, D. M.; Owour, J. Fabrication and Characterization of Alkyl-Functionalized CNFs/Cellulose Acetate Polymer Nanocomposites. Adv. Mater. 2024, 13(3), 55-63. doi: 10.11648/j.am.20241303.13
AMA Style
Mukhebi SS, Otieno G, Aluoch AO, Andala DM, Owour J. Fabrication and Characterization of Alkyl-Functionalized CNFs/Cellulose Acetate Polymer Nanocomposites. Adv Mater. 2024;13(3):55-63. doi: 10.11648/j.am.20241303.13
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Download@article{10.11648/j.am.20241303.13,
author = {Situma Stephen Mukhebi and Geoffrey Otieno and Austin Ochieng Aluoch and Dickson Mubera Andala and James Owour},
title = {Fabrication and Characterization of Alkyl-Functionalized CNFs/Cellulose Acetate Polymer Nanocomposites
},
journal = {Advances in Materials},
volume = {13},
number = {3},
pages = {55-63},
doi = {10.11648/j.am.20241303.13},
url = {https://doi.org/10.11648/j.am.20241303.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20241303.13},
abstract = {Carbon nanofibers (CNFs) are widely used to fabricate nanocomposites with enhanced properties. The emergent properties of the nanocomposites depend on the initial properties of the CNFs and how the fibers have been dispersed within the polymer matrix. This study looks at the fabrication of nanocomposites using dodecyl, butyl, and acetyl functionalized CNFs with cellulose acetate as the polymer matrix. The CNFs were prepared by electro-spinning, and functionalization was achieved using alkyl halides in the presence of lithium. Scanning Electron Microscopy (SEM) showed that the fibers were well embedded in the polymer Matrix, Thermal Gravimetric Analysis (TGA) of the nanocomposite revealed a slight increase in the degradation temperatures of the nanocomposites as compared to the blank sample, the aggregate loss of weight of the samples was about 80%. Dynamic Mechanical Analysis (DMA) of the nanocomposites showed increased stiffness and modulus storage by an average of 450MPa for butyl and dodecyl-functionalized CNFs, however, the storage modulus values of the nanocomposites generally decreased with an increase in temperature. The glass transition temperature of the nanocomposites was higher than that of the reference sample by an average of +36°C. Conductivity measurements of the nanocomposites showed no changes at lower frequencies of 1x102 - 4x104Hz. However, the values started increasing at peaked at 5x107Hz. The conductivity measurements revealed that the nanocomposites exhibited higher conductivity peaks at specific frequencies compared to the reference sample, indicating an enhanced electrical property of the nanocomposite. The study successfully fabricated nanocomposites with enhanced mechanical, thermal, and dielectric properties using functionalized CNFs.
},
year = {2024}
}
TY - JOUR T1 - Fabrication and Characterization of Alkyl-Functionalized CNFs/Cellulose Acetate Polymer Nanocomposites AU - Situma Stephen Mukhebi AU - Geoffrey Otieno AU - Austin Ochieng Aluoch AU - Dickson Mubera Andala AU - James Owour Y1 - 2024/09/29 PY - 2024 N1 - https://doi.org/10.11648/j.am.20241303.13 DO - 10.11648/j.am.20241303.13 T2 - Advances in Materials JF - Advances in Materials JO - Advances in Materials SP - 55 EP - 63 PB - Science Publishing Group SN - 2327-252X UR - https://doi.org/10.11648/j.am.20241303.13 AB - Carbon nanofibers (CNFs) are widely used to fabricate nanocomposites with enhanced properties. The emergent properties of the nanocomposites depend on the initial properties of the CNFs and how the fibers have been dispersed within the polymer matrix. This study looks at the fabrication of nanocomposites using dodecyl, butyl, and acetyl functionalized CNFs with cellulose acetate as the polymer matrix. The CNFs were prepared by electro-spinning, and functionalization was achieved using alkyl halides in the presence of lithium. Scanning Electron Microscopy (SEM) showed that the fibers were well embedded in the polymer Matrix, Thermal Gravimetric Analysis (TGA) of the nanocomposite revealed a slight increase in the degradation temperatures of the nanocomposites as compared to the blank sample, the aggregate loss of weight of the samples was about 80%. Dynamic Mechanical Analysis (DMA) of the nanocomposites showed increased stiffness and modulus storage by an average of 450MPa for butyl and dodecyl-functionalized CNFs, however, the storage modulus values of the nanocomposites generally decreased with an increase in temperature. The glass transition temperature of the nanocomposites was higher than that of the reference sample by an average of +36°C. Conductivity measurements of the nanocomposites showed no changes at lower frequencies of 1x102 - 4x104Hz. However, the values started increasing at peaked at 5x107Hz. The conductivity measurements revealed that the nanocomposites exhibited higher conductivity peaks at specific frequencies compared to the reference sample, indicating an enhanced electrical property of the nanocomposite. The study successfully fabricated nanocomposites with enhanced mechanical, thermal, and dielectric properties using functionalized CNFs. VL - 13 IS - 3 ER -
School of Chemistry and Material Science, Technical University of Kenya, Haile Selassie Avenue, Nairobi, Kenya
School of Chemistry and Material Science, Technical University of Kenya, Haile Selassie Avenue, Nairobi, Kenya
School of Chemistry and Material Science, Technical University of Kenya, Haile Selassie Avenue, Nairobi, Kenya
Chemistry Department, Multimedia University of Kenya, Nairobi, Kenya
School of Chemistry and Material Science, Technical University of Kenya, Haile Selassie Avenue, Nairobi, Kenya
