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| Titel: |
Comparison of Chemical Composition Distributions of Poly(methyl methacrylate)-graft-polydimethylsiloxane by High-Performance Liquid Chromatography and Demixing-Solvent Fractionation |
| Auteur: |
Kawai, Tadatomo Teramachi, Shinya Tanaka, Susumu Maeda, Shingo |
| Verschenen in: |
International journal of polymer analysis & characterization |
| Paginering: | Jaargang 5 (2000) nr. 4-6 pagina's 381-399 |
| Jaar: |
2000-05-01 |
| Inhoud: |
Poly(methyl methacrylate)-graft-polydimethylsiloxane (PMMA-graft-PDMS) samples with different compositions were prepared by radical copolymerization of PDMS macromonomer with methyl methacrylate. The chemical composition distributions (CCDs) of the graft copolymer samples were determined by the high-performance liquid chromatography (HPLC) based on the reversed-phase adsorption mode, using a prepacked column of butyl-modified silica gel and the linear gradient elution of acetonitrile and tetrahydrofuran. The CCD of one of the graft copolymer samples was also determined by the demixing-solvent fractionation using the demixing-solvent pair of dimethylsulfoxid-tetrachloroethylene reported by Stejskal et al. The CCD by HPLC was in good agreement with theoretical CCD, while the CCD by the demixing-solvent fractionation was narrower than those by the HPLC and the theoretical calculation. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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