Synthesis of Boronic Acid-Cross-Linked Diene-Based Polymers via Free-Radical Copolymerization.

ABSTRACT: Conjugated diene polymers cross-linked with boronic acid functionalities were synthesized via free-radical copolymerization of styrylboronic acid and isoprene or myrcene. The polymerization proceeded with an identical boron incorporation to the comonomer feed in a 1,4-specific manner. The molecular weight (M_n) of the copolymer reached 46,000-110,000 g/mol, guaranteeing an adequate number of boronic acids in one polymer chain for cross-linking. To obtain a soluble copolymer, the concentration of styrylboronic acid monomer in THF/H₂O mixture solvent is important to prevent dehydrative boroxine formation during polymerization. The cross-linking driven by thermal dehydration-condensation of boronic acid moieties was confirmed by the increase in tensile modulus of the mold

SUBMITTER: Kawamoto M 

PROVIDER: S-EPMC12817154 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature