Functionalized reduced graphene oxide/epoxy composites with enhanced mechanical properties and thermal stability
IR@CMERI: CSIR- Central Mechanical Engineering Research Institute (CMERI), Durgapur
View Archive Info| Field | Value | |
| Title |
Functionalized reduced graphene oxide/epoxy composites with enhanced mechanical properties and thermal stability
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| Creator |
Chhetri, Suman
Adak, Nitai Chandra Samanta, Pranab Murmu, Naresh Chandra Kuila, Tapas |
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| Subject |
Thermal stability
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| Description |
One-pot hydrothermal reduction of graphene oxide (GO) in N-methyl-2-pyrrolidone (NMP) suspension was performed, wherein GO surface were functionalized by free radicals generated from NMP molecules. The NMP functionalized reduced GO (NMPG) nanosheets were then incorporated into epoxy matrix to prepare epoxy composites. The significant improvement of 100 and 240% in fracture toughness (critical intensity factor, KIC) and fracture energy (critical strain energy release rate, GIC) achieved from single edge notched bending (SENB) test revealed the excellent toughening ability of NMPG. The improved compatibility and interfacial interaction between the epoxy matrix and NMPG yielded∼28, 19 and 51% improvement in tensile strength, Young's and storage modulus, respectively. Thermal stability of pure epoxy and its composites was determined at 5, 10 and 50% weight loss, which showed 30, 27.5 and 29 °C improvement with 0.2 wt% NMPG loading. The work provides a simple method to prepare graphene-based epoxy composites with improved performance.
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| Publisher |
Elsevier
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| Date |
2017-10
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| Type |
Article
PeerReviewed |
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| Identifier |
Chhetri, Suman and Adak, Nitai Chandra and Samanta, Pranab and Murmu, Naresh Chandra and Kuila, Tapas (2017) Functionalized reduced graphene oxide/epoxy composites with enhanced mechanical properties and thermal stability. Polymer Testing, 63. pp. 1-11.
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| Relation |
http://cmeri.csircentral.net/472/
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