Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites
There is a great need for advanced functional materials such as light-weight and high strength materials, super capacitive materials, highly conductive materials for many advanced engineering applications. Carbon nanotube (CNT)/polymer composites are a new class of materials with a wide range of pro...
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| Format: | Thesis |
| Language: | English |
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2012
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| Online Access: | https://hdl.handle.net/10356/50687 |
| _version_ | 1811687838643650560 |
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| author | Cheng, Henry Kuo Feng |
| author2 | Chan Siew Hwa |
| author_facet | Chan Siew Hwa Cheng, Henry Kuo Feng |
| author_sort | Cheng, Henry Kuo Feng |
| collection | NTU |
| description | There is a great need for advanced functional materials such as light-weight and high strength materials, super capacitive materials, highly conductive materials for many advanced engineering applications. Carbon nanotube (CNT)/polymer composites are a new class of materials with a wide range of properties for engineering applications. However, the major challenges for CNT/polymer composites are to attain a uniform dispersion of CNTs in polymer matrices and an efficient interfacial adhesion between CNTs and matrices. Therefore, the objective of this thesis is to fabricate CNT/polymer composites for various engineering applications using a melt-mixing technique. The modifications, such as physical and chemical functionalisations, of multiwalled carbon nanotubes (MWCNTs) were also made. The properties of the CNT/polymer composites, such as electrical, thermal, mechanical, morphological and rheological properties, and the relevant mechanisms have been studied systematically. The improved interfacial adhesion between MWCNTs and a matrix polymer as well as the uniform dispersion of MWCNTs in the polymer matrix were achieved by means of functionalisations of MWCNTs. Moreover, a complementary effect between MWCNTs and conductive carbon black (CCB) was found to promote the formation of electrically conductive network of the carbon fillers in the polymer matrix, resulting in a dramatic increase in the electrical conductivity of the resultant composites. |
| first_indexed | 2024-10-01T05:22:41Z |
| format | Thesis |
| id | ntu-10356/50687 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:22:41Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/506872023-03-11T17:51:23Z Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites Cheng, Henry Kuo Feng Chan Siew Hwa Li Lin School of Mechanical and Aerospace Engineering A*STAR Singapore Institute of Manufacturing Technology DRNTU::Engineering::Materials::Compositional materials science There is a great need for advanced functional materials such as light-weight and high strength materials, super capacitive materials, highly conductive materials for many advanced engineering applications. Carbon nanotube (CNT)/polymer composites are a new class of materials with a wide range of properties for engineering applications. However, the major challenges for CNT/polymer composites are to attain a uniform dispersion of CNTs in polymer matrices and an efficient interfacial adhesion between CNTs and matrices. Therefore, the objective of this thesis is to fabricate CNT/polymer composites for various engineering applications using a melt-mixing technique. The modifications, such as physical and chemical functionalisations, of multiwalled carbon nanotubes (MWCNTs) were also made. The properties of the CNT/polymer composites, such as electrical, thermal, mechanical, morphological and rheological properties, and the relevant mechanisms have been studied systematically. The improved interfacial adhesion between MWCNTs and a matrix polymer as well as the uniform dispersion of MWCNTs in the polymer matrix were achieved by means of functionalisations of MWCNTs. Moreover, a complementary effect between MWCNTs and conductive carbon black (CCB) was found to promote the formation of electrically conductive network of the carbon fillers in the polymer matrix, resulting in a dramatic increase in the electrical conductivity of the resultant composites. DOCTOR OF PHILOSOPHY (MAE) 2012-09-03T05:03:28Z 2012-09-03T05:03:28Z 2012 2012 Thesis Cheng, H. K. F. (2012). Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/50687 10.32657/10356/50687 en 260 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Compositional materials science Cheng, Henry Kuo Feng Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| title | Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| title_full | Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| title_fullStr | Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| title_full_unstemmed | Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| title_short | Physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| title_sort | physical and chemical modifications of carbon nanotubes for the development of advanced polymer nanocomposites |
| topic | DRNTU::Engineering::Materials::Compositional materials science |
| url | https://hdl.handle.net/10356/50687 |
| work_keys_str_mv | AT chenghenrykuofeng physicalandchemicalmodificationsofcarbonnanotubesforthedevelopmentofadvancedpolymernanocomposites |