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Nucleophilic Cleavage of Crosslinked Polysiloxanes to Cyclic Siloxane Monomers: Mild Catalysis by a Designed Polar Solvent System

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Abstract

The solvent effect on the cyclic compound formation in the base-catalyzed aminolysis reaction of room temperature vulcanized polydimethylsiloxane networks under ambient temperature was investigated. The complete dissolution time of the silicone rubber in the less polar solvent system was longer which is attributed to the internal diffusion resistance for the penetration of the activated nucleophiles in the inherent hydrophobic polysiloxane networks. The main products were cyclic oligomers in the polar solvent systems. The reaction rate of aminolysis was proved to be faster than that of alcoholysis with the aid of a model compound under the reaction conditions designed.

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References

  1. M. G. Voronkov, V. P. Mileshkevich and Yu. A. Yuzhelevskii, The Siloxane Bond, Consultants Bureau, New York, 1978.

    Google Scholar 

  2. Y. C. Hsiao, L. W. Hill and S. P. Pappas, J. Appl. Polym. Sci., 19, 2817 (1975).

    Article  Google Scholar 

  3. S. P. Pappas and R. L. Just, J. Polym. Sci.: Polym. Chem. Ed., 18, 527 (1980).

    Article  Google Scholar 

  4. K. H. Schimmel, Acta Polymerica, 38, 495 (1987).

    Article  Google Scholar 

  5. K. H. Schimmel and J. Schulz, Acta Polymerica, 38, 536 (1987).

    Article  Google Scholar 

  6. K. H. Schimmel, E. Schroder, J. Schulz and J. Souvimonh, Acta Polymerica, 39, 310 (1988).

    Article  Google Scholar 

  7. C. L. Chang, H. S. Lee and C. K. Chen, Polym. Degrad. Stab., 65, 1 (1999).

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Chemical and Materials Engineering, Tamkang University, Tamsui, 251, Taiwan

    Cheng-Liang Chang & Cheng-Kwo Chen

  2. China Development Industrial Bank, Taipei, 105, Taiwan

    Howard Shih-Jen Lee

Authors
  1. Cheng-Liang Chang
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  2. Howard Shih-Jen Lee
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  3. Cheng-Kwo Chen
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Correspondence to Cheng-Liang Chang.

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Chang, CL., Lee, H.SJ. & Chen, CK. Nucleophilic Cleavage of Crosslinked Polysiloxanes to Cyclic Siloxane Monomers: Mild Catalysis by a Designed Polar Solvent System. J Polym Res 12, 433–438 (2005). https://doi.org/10.1007/s10965-004-1871-1

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  • DOI: https://doi.org/10.1007/s10965-004-1871-1

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