LOW-TEMPERATURE EQUILIBRATION REACTION AND PROPERTIES OF TELECHELIC SILOXANE OLIGOMERS

1. Milica Balaban, Univerzitet u Banjoj Luci, Prirodno-matematički fakultet, Mladena Stojanovića 2, 78000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Rebeka Lorber, FTPO, Slovenia
3. Miroslav Huskić, FTPO, Slovenia
4. Vesna Antić, Univerzitet u Beogradu, Poljoprivredni fakultet, Nemanjina 6, 11000 Beograd, Serbia


Siloxane equilibration reaction in the presence of appropriate functional disiloxanes is a common method for synthesis of telechelic siloxane oligomers. Due to high reaction temperature, synthesis of hydoxy-terminated polysiloxane are accompanied by number side reactions. In this paper, the synthesis of hydroxy-terminated siloxane oligomers at relatively low temperatures was optimized. The oligomers of the controlled molecular weight was synthesized in the presence of heterogeneous catalyst and characterized by spectroscopic and thermal methods, as well as thermogravimetric analysis - infrared spectroscopy (TG-FTIR) and dilute solution viscometry.

Keywords: hydroxy-terminated PDMS, siloxane equilibration reaction, 1H NMR spectroscopy


Ključne reči: hydroxy-terminated PDMS; siloxane equilibration reaction; 1H NMR spectroscopy

Tematska oblast:

Datum: 31.07.2021.

Contemporary Materials 2021 - Savremeni Materijali

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