Structural correlation between the columnar mesophase and the melt in poly(di-n-alkylsiloxane)s

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Out, Gerardus J.J. and Turetski, Alexei A. and Möller, Martin (1995) Structural correlation between the columnar mesophase and the melt in poly(di-n-alkylsiloxane)s. Macromolecular Rapid Communications, 16 (2). pp. 107-112. ISSN 1022-1336

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Abstract:Phase transitions of poly(dialkylsiloxane)s substituted with propyl and butyl groups are reported based on X-ray diffractometry. The structure in the mesophase and in the melt of polymers with 2 to 10 carbon atoms in each side chain is compared. Both phases display a linear dependence of the molecular cross-section on the length of the alkyl group demonstrating their structural similarity. By means of differential scanning calorimetry it is shown that the temperature range of the mesophase remains practically unchanged in width as well as in absolute temperature for dibutyl up to dihexyl substituted polysiloxanes.
Item Type:Article
Copyright:© 1995 Wiley InterScience
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Link to this item:http://purl.utwente.nl/publications/71205
Official URL:http://dx.doi.org/10.1002/marc.1995.030160202
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Metis ID: 105715