Novel Amphiphilic Star-Shaped Poly(2-Oxazoline)s with Calix[4]Arene Branching Center

Abstract:

Novel amphiphlic four-arm star-shaped poly (2-alkyl-2-oxazoline) s with calix [4] arene core were synthesized using the “grafting from” approach. The chlorosulfonated calix [4] arene derivative was synthesized and successfully applied as a multifunctional initiator for the cationic ring-opening polymerization of 2-alkyl-2-oxazolines. Obtained star-shaped poly (2-alkyl-2-oxazoline) s were characterized by means of NMR, UV-Vis spectroscopy and gel-permeation chromatography. It was shown that star-shaped poly (2-isopropyl-2-oxazoline) perform thermosensitivity in aqueous solutions.

• Periodical: Key Engineering Materials (Volume 899)
• Pages: 300-308
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.899.300
• Online since: September 2021
• Authors: Aleksei N. Blokhin*, Alla B. Razina, Andrey V. Tenkovtsev
• Keywords: Calixarenes, Cationic Ring-Opening Polymerization, Polyoxazolines, Star-Shaped Polymers, Sulfonyl Chlorides

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