Solution Properties of Poly(Methyl Methacrylate) in Dimethylsulfoxide

The solution properties of polymethylmethacrylate in dimethylsulfoxide were studied using multi-angle light scattering and an online viscometer coupled to size exclusion chromatography. The data demonstrate that DMSO is a suitable eluent for the determination of the molecular weight of PMMA by SEC....

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Bibliographic Details
Published in:International journal of polymer analysis & characterization 2008-12, Vol.13 (6), p.413-427
Main Author: Moyses, Stephan
Format: Article
Language:English
Subjects:
Intrinsic viscosity
Polymethylmethacrylate
Unperturbed dimension
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Summary:The solution properties of polymethylmethacrylate in dimethylsulfoxide were studied using multi-angle light scattering and an online viscometer coupled to size exclusion chromatography. The data demonstrate that DMSO is a suitable eluent for the determination of the molecular weight of PMMA by SEC. The Mark-Houwink coefficients K and α were determined as a function of temperature. At 35°C, DMSO is a theta solvent for PMMA, and it becomes a good solvent as the temperature increases. The unperturbed dimension K θ was calculated using three different procedures. The data do not show evidence of a conformational transition controlled by the temperature such as the one reported in benzene and confirm the existence of a general relationship between the ratio K/K θ and α. In the case of PMMA, the comparison of the dipole moment of the side group to that of the solvent can be used to predict the existence of a conformational transition.
ISSN:1023-666X
1563-5341
DOI:10.1080/10236660802396354