Anionic Ring-Opening Polymerization of a Functional Epoxide Monomer with an Oxazoline Protecting Group for the Synthesis of Polyethers with Carboxylic Acid Pendants

Jihye Park, Yeji Yu, Joo Won Lee, Byeong Su Kim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Polymers with carboxylic acid functionalities are widely used in adhesives, absorbents, dispersants, drug delivery systems, and hydrogels. Unlike common radical polymerization, it is difficult to synthesize polymers with carboxylic acid groups via anionic ring-opening polymerization because of the harsh reaction conditions. Although a carboxylic acid-functionalized polyether, poly(glycidoxy acetic acid), was previously prepared by using monomer-activated ring-opening polymerization, this approach often suffers from a low initiation efficiency and is limited to homopolymerization. Herein, we present a novel functional epoxide monomer bearing oxazoline as a protecting group, 4,4-dimethyl-2-oxazoline glycidyl ether, for a controlled synthesis of poly(4,4-dimethyl-2-oxazoline glycidyl ether) by overcoming the aforementioned limitations. The stepwise syntheses of the monomer and polymers were carefully analyzed via 1H NMR, GPC, FT-IR spectroscopy, and MALDI-ToF analysis. Furthermore, copolymerization with another monomer and a macroinitiator yielded well-defined polymers. We anticipate that this study will provide a new platform for the synthesis of polyethers with carboxylic acid functional groups.

Original languageEnglish
Pages (from-to)5448-5458
Number of pages11
JournalMacromolecules
Volume55
Issue number13
DOIs
Publication statusPublished - 2022 Jul 12

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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