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Separation and Simultaneous Molecular Weight Determination of PVDF in PVDF/PMMA Blends Based on Adsorption/Size Exclusion

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Abstract:

With dimethylsulfoxide(DMSO)as the eluent, a PMMA(poly(methyl methacrylate))standard injected in a polystyrene/divinyl benzene column at 35°C does not elute out. On the other hand, under the same chromatographic conditions, a PVDF standard(poly(vinylidene fluoride))will elute out. We use this property to separate PVDF from PMMA in a blend of the two polymers. The blend is dissolved in DMSO, filtered, and directly injected. The chromatogram features the peak that corresponds to the PVDF and the solvent peaks, but the PMMA is absent. The molecular weight distribution of the PVDF can be calculated using a broad molecular weight PVDF standard.

Document Type: Research Article

DOI: https://doi.org/10.1080/10236660490890420

Affiliations: Atofina Chemicals, Inc., King of Prussia, Pennsylvania, USA

Publication date: 2004-01-01

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