Exactly alternating silarylene-siloxane polymers. III. Structure-property relationships for polymers containing p-phenylene and p,p′-diphenyl ether silarylene units |
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Authors: | Petar R Dvornic Robert W Lenz |
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Abstract: | A series of 12 different exactly alternating silarylene-siloxane polymers was prepared by low temperature condensation polymerization of arylenedisilanol with bisureidosilane monomers. The structural characterization of the polymers was carried out by 1H NMR spectroscopy, 13C NMR spectroscopy, infrared (IR) spectrometry, gel permeation chromatography (GPC). dilute solution viscometry, and differential scanning calorimetry (DSC). Homopolymers and copolymers that contained either or both p-phenylene and p,p′-diphenyl ether units in the silarylene group and dimethyl or methylvinyl units in the siloxane group were prepared in high molecular weights. |
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