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About the mode of incorporation of silanol-terminated polysiloxanes into butylene terephthalate-b-dimethylsiloxane copolymers

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2008
Authors
Antić, Vesna
Vučković, M.V.
Dojčinović, Biljana
Antić, M.P.
Barać, M.B.
Govedarica, Milutin
Article (Published version)
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Abstract
The modality of the incorporation of silanol-terminated siloxanes into copolymers with butylene terephthalate were investigated and determined. Besides siloxanes, the other participants in this well-known copolymerization, called the catalyzed two-step transesterification/polycondensation reaction, are dimethyl terephthalate and 1,4-butanediol. The employed approach to this problem was to exactly examine all the possibilities of the reactions between particular pairs of reactants, as well as of single reactants. The final results were, firstly, that reactions between siloxanes and dimethyl terephthalate did not occur and, secondly, that the only possibility for silanol-terminated siloxanes to be incorporated into the copolymers was by means of their condensation with 1,4-butanediol. This means that siloxanes are incorporated into the copolymer by ether and not by ester linkages.
Keywords:
Silanol-terminated siloxanes / Thermoplastic elastomers / Two-step transesterification-polycondensation reaction
Source:
Reactive and Functional Polymers, 2008, 68, 4, 851-860
Publisher:
  • Elsevier Science Bv, Amsterdam
Projects:
  • Sinteza i karakterizacija polimera i polimernih (nano)kompozita definisane molekulske i nadmolekulske strukture (RS-142023)

DOI: 10.1016/j.reactfunctpolym.2007.12.004

ISSN: 1381-5148

WoS: 000255267700003

Scopus: 2-s2.0-40849145434
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/467
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