| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 |
29권 2호, p.557 |
| 발표분야 |
복합재료 |
| 제목 |
GRAFTING OF POLYETHERKETONES ONTO CARBON NANOTUBES VIA IN-SITU POLYMERIZATION OF 3- AND 4-PHENOXYBENZOIC ACIDS IN POLYPHOSPHORIC ACID |
| 초록 |
In-situ polymerization of 3- and 4-phenoxybenzoic acid in the presence of various amounts (1-30 wt%) of carbon nanotubes (CNTs, diameters: 10 and 100 nm) was carried out in poly(phosphoric acid/phosphorus pentoxide (PPA/P2O5; 1:4 w/w) medium. 3- and 4-Phenoxybenzoic acid polymerize in PPA to form poly(oxy-1,3-phenylenecarbonyl-1,4-phenylene, mPEK) and poly(oxy-1,4-phenylenecarbonyl-1,4-phenylene, pPEK), respectively. The resulting CNT-g-mPEK and CNT-g-pPEK products that contained less than 10 wt% of CNT were soluble in N-methyl-2-pyrrolidinone, and had intrinsic viscosity values ranging from 1.00-1.73 dL/g in methanesulfonic acid (MSA) at 30 ± 0.1 °C. The overall evidence based on the data from elemental analysis (EA), thermogravimetric analysis (TGA), FT-IR spectroscopy as well as scanning electron microscopy (SEM) and transmission electron microscopy (TEM) of the resulting materials implicates that CNT remained structurally intact under the mild acid, relatively high-shearing and hot polymerization conditions. It is also evident that under these reaction conditions, mPEK and pPEK were grafted onto the surface of CNT resulting in “hairy tube”. The wide-angle x-ray diffraction result showed the growth of 3.35 Å peak characteristic of CNT, that increased in intensity proportionately to the presence of CNT in the sample and correlated well with the EA and TGA results. The conductivity of cast film (10 wt% CNT) has 0.25 S/cm (bottom of film) and 0.30 S/cm (top of film), respectively. |
| 저자 |
오세진1, 이화정1, 금동기1, 이승우2, 박수영2, Christopher B3, Lyons4, Loon-Seng Tan5, 백종범6
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| 소속 |
1충북대, 2경북대, 3Southwestern Ohio Council for Higher Education (SOCHE), 4Polymer Branch, 5US Air Force Research Lab (AFRL/MLBP), 6WPAFB |
| 키워드 |
Carbon Nanotube; Polyetherketone; Grafting
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| E-Mail |
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