Development of polymer composites using modified, high-structural integrity graphene platelets
Previous studies on polymer/graphene composites have mainly utilized either reduced graphene oxide or graphite nanoplatelets of over 10 nm in thickness. In this study we covalently modified 3-nm thick graphene platelets (GnPs) by the reaction between the GnPs’ epoxide groups and the end-amine groups...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Science Ltd
2014
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| Online Access: | http://eprints.uthm.edu.my/4559/ http://eprints.uthm.edu.my/4559/1/AJ%202017%20%28188%29%20Development%20of%20polymer%20composites%20using%20modi%EF%AC%81ed.pdf |
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| author | Ma, Jun Meng, Qingshi Zaman, Izzuddin Zhu, Shenmin Michelmore, Andrew Kawashima, Nobuyuki Chun, H. Wang, Hsu-Chiang Kuan |
| author_facet | Ma, Jun Meng, Qingshi Zaman, Izzuddin Zhu, Shenmin Michelmore, Andrew Kawashima, Nobuyuki Chun, H. Wang, Hsu-Chiang Kuan |
| author_sort | Ma, Jun |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | Previous studies on polymer/graphene composites have mainly utilized either reduced graphene oxide or graphite nanoplatelets of over 10 nm in thickness. In this study we covalently modified 3-nm thick graphene platelets (GnPs) by the reaction between the GnPs’ epoxide groups and the end-amine groups of a commercial long-chain surfactant (Mw = 2000), compounded the modified GnPs (m-GnPs) with a model polymer epoxy, and investigated the structure and properties of both m-GnPs and their epoxy composites. A low Raman ID/IG ratio of 0.13 was found for m-GnPs corresponding to high structural integ-rity. A percolation threshold of electrical conductivity was observed at 0.32 vol% m-GnPs, and the 0.98 vol% m-GnPs improved the Young’s modulus, fracture energy release rate and glass transition tem-perature of epoxy by 14%, 387% and 13%, respectively. These significantly improved properties are cred-ited to: (i) the low Raman ID/IG ratio of GnPs, maximizing the structural integrity and thus conductivity, stiffness and strength inherited from its sister graphene, (ii) the low thickness of GnPs, minimizing the damaging effect of the poor through-plane mechanical properties and electrical conductivity of graphene,(iii) the high-molecular weight surfactant, leading to uniformly dispersed GnPs in the matrix, and (iv) a covalently bonded interface between m-GnPs and matrix, more effectively transferring load/electron across interface. |
| first_indexed | 2025-11-15T20:08:24Z |
| format | Article |
| id | uthm-4559 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:08:24Z |
| publishDate | 2014 |
| publisher | Elsevier Science Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-45592021-12-07T07:22:45Z http://eprints.uthm.edu.my/4559/ Development of polymer composites using modified, high-structural integrity graphene platelets Ma, Jun Meng, Qingshi Zaman, Izzuddin Zhu, Shenmin Michelmore, Andrew Kawashima, Nobuyuki Chun, H. Wang, Hsu-Chiang Kuan QD Chemistry Previous studies on polymer/graphene composites have mainly utilized either reduced graphene oxide or graphite nanoplatelets of over 10 nm in thickness. In this study we covalently modified 3-nm thick graphene platelets (GnPs) by the reaction between the GnPs’ epoxide groups and the end-amine groups of a commercial long-chain surfactant (Mw = 2000), compounded the modified GnPs (m-GnPs) with a model polymer epoxy, and investigated the structure and properties of both m-GnPs and their epoxy composites. A low Raman ID/IG ratio of 0.13 was found for m-GnPs corresponding to high structural integ-rity. A percolation threshold of electrical conductivity was observed at 0.32 vol% m-GnPs, and the 0.98 vol% m-GnPs improved the Young’s modulus, fracture energy release rate and glass transition tem-perature of epoxy by 14%, 387% and 13%, respectively. These significantly improved properties are cred-ited to: (i) the low Raman ID/IG ratio of GnPs, maximizing the structural integrity and thus conductivity, stiffness and strength inherited from its sister graphene, (ii) the low thickness of GnPs, minimizing the damaging effect of the poor through-plane mechanical properties and electrical conductivity of graphene,(iii) the high-molecular weight surfactant, leading to uniformly dispersed GnPs in the matrix, and (iv) a covalently bonded interface between m-GnPs and matrix, more effectively transferring load/electron across interface. Elsevier Science Ltd 2014 Article PeerReviewed text en http://eprints.uthm.edu.my/4559/1/AJ%202017%20%28188%29%20Development%20of%20polymer%20composites%20using%20modi%EF%AC%81ed.pdf Ma, Jun and Meng, Qingshi and Zaman, Izzuddin and Zhu, Shenmin and Michelmore, Andrew and Kawashima, Nobuyuki and Chun, H. and Wang, Hsu-Chiang Kuan (2014) Development of polymer composites using modified, high-structural integrity graphene platelets. Composites Science and Technology, 91. pp. 82-90. ISSN 0266-3538 http://dx.doi.org/10.1016/j.compscitech.2013.11.017 |
| spellingShingle | QD Chemistry Ma, Jun Meng, Qingshi Zaman, Izzuddin Zhu, Shenmin Michelmore, Andrew Kawashima, Nobuyuki Chun, H. Wang, Hsu-Chiang Kuan Development of polymer composites using modified, high-structural integrity graphene platelets |
| title | Development of polymer composites using modified, high-structural integrity graphene platelets |
| title_full | Development of polymer composites using modified, high-structural integrity graphene platelets |
| title_fullStr | Development of polymer composites using modified, high-structural integrity graphene platelets |
| title_full_unstemmed | Development of polymer composites using modified, high-structural integrity graphene platelets |
| title_short | Development of polymer composites using modified, high-structural integrity graphene platelets |
| title_sort | development of polymer composites using modified, high-structural integrity graphene platelets |
| topic | QD Chemistry |
| url | http://eprints.uthm.edu.my/4559/ http://eprints.uthm.edu.my/4559/ http://eprints.uthm.edu.my/4559/1/AJ%202017%20%28188%29%20Development%20of%20polymer%20composites%20using%20modi%EF%AC%81ed.pdf |