We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Multiarm Star-Shaped Polydimethylsiloxanes with a Dendritic Branching Center.
- Authors
Tikhonov, Pavel A.; Vasilenko, Nataliya G.; Gallyamov, Marat O.; Cherkaev, Georgii V.; Vasil'ev, Viktor G.; Demchenko, Nina V.; Buzin, Mikhail I.; Vasil'ev, Sergey G.; Muzafarov, Aziz M.
- Abstract
New multiarm stars have been synthesized based on polylithium derivatives of high-generation carbosilane dendrimers. In the synthesis of multiarm stars based on the eighth-generation dendrimer, steric hindrances were observed even during the synthesis of a polylithium initiator. Subsequently, this led to chain transfer reactions between growing arms, as well as other side effects. As a result, dense nanogel formations with a higher tendency of ordering than in classical objects of this type were isolated from the reaction mixture. The study of the rheology of multiarm stars based on sixth-generation dendrimers made it possible to determine the activation energies of viscous flow in these objects, which makes it possible to consider them as objects with a macromolecular nature and a reptation flow mechanism.
- Subjects
STAR-branched polymers; DIMETHYLPOLYSILOXANES; VISCOUS flow; STERIC hindrance; ACTIVATION energy
- Publication
Molecules, 2021, Vol 26, Issue 11, p3280
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules26113280