Poly ( dimethylsiloxane ) - Solvent 계의 역 기체 크로마토그래피 연구 = Inverse Gas Chromatographic Study of Poly ( dimethylsiloxane ) - Solvents Systems

다국어 초록 (Multilingual Abstract)

In this work, Inverse Gas Chromatography(IGC) at finite concentration is employed for the study of the interaction characteristics of poly (dimethylsiloxane) (PDMS) with various solvents such as water, ethanol, and iso-propanol. By measuring the specific retention volumes of the probes, the interaction parameters are calculated using the Flory-Huggins equation. From the results, the interaction parameters of the probes are, as expected due to the hydrophobicity of the polymer, found to be of large positive values(2$lt;x$lt;5). With the increase of alkyl chain length of the solvents, the interaction parameter decreases implying the relative favorite interaction with the PDMS. The IGC study is repeated for the cross-linked PDMS, which is prepared in our lab. By measuring the specific retention volumes of the probes, the cross-linking density is found to be about 2.0×10＾(-3) mol/g according to the Flory-Rehner equation.