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Enhancement of interfacial adhesion and dynamic mechanical properties of poly(methyl methacrylate)/multiwalled carbon nanotube composites with amine-terminated poly(ethylene oxide) |
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| Authors: | Mian Wang Suat Hong Goh |
| Affiliation: | a Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore b Institute of Materials Research and Engineering, National University of Singapore, 3 Research Link, Singapore 117602, Singapore |
| Abstract: | We have studied the dynamic mechanical behavior of poly(methyl methacrylate) (PMMA)/acidified multiwalled carbon nanotube (MWNT) composites compatibilized with amine-terminated poly(ethylene oxide) (PEO-NH2). PEO-NH2 is ionically associated with acidified MWNTs via ionic interaction as shown by XPS and FTIR. The miscibility between PEO and PMMA improves the interfacial adhesion between polymer matrix and MWNTs, leading to an increase in the storage modulus values of the composites. The effects of PEO-NH2 on storage modulus and glass transition temperature are discussed. |
| Keywords: | Carbon nanotubes Dynamic mechanical thermal analysis Scanning electron microscopy X-ray photoelectron spectroscopy Functional groups |
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