Functionalization of HDPE powder by CF4 plasma surface treatment in a fluidized bed reactor |
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Authors: | Soung Hee Park Sang Done Kim |
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Affiliation: | (1) Department of Chemical Engineering and Energy & Environment Research Center, Korea Advanced Institute of Science and Technology, 373-1 Kusung-dong, Yusong-gu, 305-701 Taejon, Korea |
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Abstract: | The surface of HDPE polymer powder was fluorinated by CF4 plasma in a fluidized bed reactor. Plasma is generated by an inductively coupled electrode at 13.56 MHz (rf) frequency, connected
to an auto matching network and an rf power generator. In plasma surface fluorination, the CF4 gas is diluted with He gas. The experimental variables are treatment time and rf power. The chemical property of the modified
powder has been determined by using ESCA and FTIR. Plasma surface fluorination with the powder in a fluidized bed reactor
results from the formation of CHF-CF2, CHF-CHF and CF2 groups. These fluorine functionalities and the fluorine atomic ratio on the surface increase with the treatment time and
rf power. It has been found that the composite parameter is a good measure for determining the effect of total energy input
on the plasma surface treatment of polymer powder in a fluidized bed reactor. |
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Keywords: | Fluidized Bed Polymer Powder Plasma Functionalization |
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