Premium
Multicenter Polyester Initiators for the Preparation of Graft Copolymers with Oligo(2‐Oxazoline) Side Chains
Author(s) -
Kurlykin Mikhail,
Bursian Anna,
Filippov Alexander,
Dudkina Marina,
Tenkovtsev Andrey
Publication year - 2017
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201600162
Subject(s) - cationic polymerization , side chain , polymer chemistry , copolymer , materials science , polyester , polymerization , condensation polymer , ring opening polymerization , polymer , oxazoline , living cationic polymerization , chemistry , organic chemistry , composite material , catalysis
Multicenter polyester initiators intended for the cationic polymerization of oxazolines were synthesized via high‐temperature polycondensation of 2‐(4‐(2‐bromoethyl)phenyl sulfonyl hydroquinone with a number of aromatic and alkylene‐aromatic dichloroanhydrides. The Kuhn segment values, liquid‐crystalline properties, and molecular‐mass characteristics of the macroinitiators are determined. The synthesized macroinitiators were used in cationic ring‐opening polymerization to obtain hybrid comb polymers containing poly(2‐oxazoline) side chains. It was suggested the method for estimating the length of poly(oxazoline) side fragments and graft density. It was demonstrated that at a certain ratio between backbone length and side chain length (which depends on chemical structure of the initiator), comb copolymers The graft copolymers form aqueous micellar solutions with a narrow particle‐size distribution. They possess a lower critical solution temperature.