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Preparation and characterization of poly(silyl ester)s containing 2,2-bis(p-dimethylsiloxy-phenyl)propane units in the polymer backbones

Authors

  • Nianfeng Han,

    1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
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  • Zonglin Liu,

    Corresponding author
    1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
    • School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
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  • Liqiang Jin,

    1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
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  • Yun Yue

    1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
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Abstract

The two poly(silyl ester)s containing 2,2-bis(p-dimethylsiloxy-phenyl)propane units in the polymer backbones have been prepared via polycondensation reaction of di-tert-butyl adipate and di-tert-butyl fumarate with 2,2-bis(p-chloro dimethylsiloxy-phenyl)propane to give tert-butyl chloride as the condensate. The polymerizations were performed under nitrogen at 110°C for 24 h without addition of solvents and catalysts to obtain the poly(silyl ester)s with weight average molecular weights typically ranging from 5000 to 10,000 g/mol. Characterization of the poly(silyl ester)s included 1H NMR and 13C NMR spectroscopies, infrared spectroscopy, ultraviolet spectroscopy, differential scanning calorimetry, thermogravimetric analysis (TGA), gel permeation chromatography, and Ubbelohde viscometer. The glass transition temperatures (Tg) of the obtained polymers were above zero because of the introducing 2,2-bis(p-dimethylsiloxy-phenyl)propane units in the polymer backbones. The TGA/DTG results showed that the obtained poly(silyl ester)s were stable up to 180°C and the residual weight percent at 800°C were 18 and 9%, respectively. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1937–1942, 2006

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