Issue 15, 2023

One-pot catalyst-switching synthesis of thermoresponsive amphiphilic diblock copolymers consisting of poly(N,N-diethylacrylamide) and biodegradable polyesters

Abstract

A method for the syntheses of thermoresponsive amphiphilic diblock copolymers through sequential organocatalyzed polymerizations of vinyl-based and lactone-based monomers using group transfer polymerization (GTP) and ring-opening polymerization (ROP), respectively, is described. The organocatalysts were switched between the two polymerization stages and all syntheses could be conducted in a one-pot manner. The polymerization systems directly produced diblock copolymers composed of poly(N,N-diethylacrylamide) and biodegradable polyesters (poly(ε-caprolactone), poly(trimethylene carbonate), and poly(L-lactide) in various content ratios. Aqueous solutions of the obtained block copolymers below their cloud point temperatures (Tcp) were carefully characterized, revealing a close relationship among the structures of the block copolymers, Tcp, and micellar forming properties below the Tcp.

Graphical abstract: One-pot catalyst-switching synthesis of thermoresponsive amphiphilic diblock copolymers consisting of poly(N,N-diethylacrylamide) and biodegradable polyesters

Supplementary files

Article information

Article type
Paper
Submitted
22 feb 2023
Accepted
17 mar 2023
First published
20 mar 2023

Polym. Chem., 2023,14, 1727-1735

One-pot catalyst-switching synthesis of thermoresponsive amphiphilic diblock copolymers consisting of poly(N,N-diethylacrylamide) and biodegradable polyesters

X. Fu, Y. Wang, L. Xu, A. Narumi, S. Sato, X. Shen and T. Kakuchi, Polym. Chem., 2023, 14, 1727 DOI: 10.1039/D3PY00195D

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