Özet
In this study, two types of hyperbranched (HB) polythioether could readily be achieved in a short time at ambient temperature through a thiol-Michael addition reaction. Dimethyl acetylenedicarboxylate (DMADC) or methyl propiolate (A2) and trimethylolpropane tris(3-mercaptopropionate) (B3) monomers were reacted using an organobase 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as a catalyst in chloroform at room temperature to provide subsequent HB polythioethers. The effect of TBD concentration on the polymerization was studied for the DMDAC case monitoring the molecular weight evolution against time. HB polythioethers were characterized using spectroscopic (nuclear magnetic resonance) and chromatographic (gel permeation chromatography with refractive index and light-scattering detectors) techniques.
Orijinal dil | İngilizce |
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Sayfa (başlangıç-bitiş) | 824-830 |
Sayfa sayısı | 7 |
Dergi | Journal of Polymer Science |
Hacim | 58 |
Basın numarası | 6 |
DOI'lar | |
Yayın durumu | Yayınlandı - 15 Mar 2020 |
Bibliyografik not
Publisher Copyright:© 2020 Wiley Periodicals, Inc.
Finansman
This work was supported by the Research Fund of Istanbul Technical University (Project Number: TGA‐2019‐42295).
Finansörler | Finansör numarası |
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Istanbul Teknik Üniversitesi | TGA‐2019‐42295 |