Journal
POLYMERS
Volume 14, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/polym14020285
Keywords
star-shaped polymer; polydimethylsiloxane; organocyclotetrasilsesquioxane
Categories
Funding
- Russian Science Foundation [21-73-20225]
- Russian Federation Ministry of Science and Higher Education
- Russian Foundation for Basic Research [MK 19-29-13031]
- Russian Science Foundation [21-73-20225] Funding Source: Russian Science Foundation
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New non-crystallizable low-dispersity star-shaped polydimethylsiloxanes (PDMS) containing various substituents at silicon atoms were synthesized and their thermal and viscous properties were studied. The synthesized compounds were characterized using a range of physicochemical analysis methods.
New non-crystallizable low-dispersity star-shaped polydimethylsiloxanes (PDMS) containing stereoregular cis-tetra(organo)(dimethylsiloxy)cyclotetrasiloxanes containing methyl-, tolyl- and phenyl-substituents at silicon atoms and the mixture of four stereoisomers of tetra[phenyl(dimethylsiloxy)]cyclotetrasiloxane as the cores were synthesized. Their thermal and viscous properties were studied. All synthesized compounds were characterized by a complex of physicochemical analysis methods: nuclear magnetic resonance (NMR), FT-IR spectroscopy, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), viscometry in solution, rheometry, and Langmuir trough study.
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