Surface Modification of Carbon Nanotube by Poly(ethylene glycol) for the Preparation of Poly(vinyl alcohol) Nanocomposite |
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| Authors: | Min Jee Kim Jeongwoo Lee Dongsoo Jung Sang Eun Shim |
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| Institution: | 1. Department of Chemical Engineering , Inha University , Namgu, Incheon, S. Korea;2. Department of Mechanical Engineering , Inha University , Namgu, Incheon, S. Korea |
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| Abstract: | Herein, PEGylated multi-walled carbon nanotube (MWNT) was prepared for the successive fabrication of poly(vinyl alcohol) PVA/MWNT nanocomposite film by solution casting. The surface modified MWNT showed a good colloidal stability in a polar solvent, i.e., water. Also, the PEGylated MWNT had an improved dispersion stability in aqueous PVA solution. The mixture of PEGylated MWNT and PVA dissolved in water was film casted and the dispersion uniformity and corresponding improvement of electrical conductivity were investigated. The electrical conductivity of PVA/modified MWNT composite film was three-fold higher than that of PVA/pristine MWNT composite film due to the much improved distribution uniformity of modified MWNT in PVA matrix. |
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| Keywords: | Multi-walled carbon nanotube poly(ethylene glycol) composite dispersion uniformity electrical conductivity |
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