The effect of the polydimethylsiloxane chain length on the properties of four-arm siloxane stars
YS Dyuzhikova, AA Anisimov, VV Gorodov… - Journal of …, 2023 - Elsevier
Five low-dispersity star-shaped polydimethylsiloxanes were synthesized. The
macromolecules of the polymers contain the same branching-out center, a cis-
tetraphenylcyclotetrasilsesquioxane moiety, and the same number of arms, but with different
lengths (n= 15, 21, 48, 75, and 123 Si (Me) 2 O units). Their properties were studied by a set
of physicochemical analytical methods. Viscometric studies showed that the
macromolecules of the Ph 4-15, Ph 4-21, Ph 4-48, and Ph 4-75 polymers are small-sized …
macromolecules of the polymers contain the same branching-out center, a cis-
tetraphenylcyclotetrasilsesquioxane moiety, and the same number of arms, but with different
lengths (n= 15, 21, 48, 75, and 123 Si (Me) 2 O units). Their properties were studied by a set
of physicochemical analytical methods. Viscometric studies showed that the
macromolecules of the Ph 4-15, Ph 4-21, Ph 4-48, and Ph 4-75 polymers are small-sized …