Ultra-high molecular weight polymer synthesis <i>via</i> aqueous dispersion polymerization.

ABSTRACT: The synthesis of ultra-high molecular weight (UHMW, M _n ≥ 10⁶ g mol^-1) polymers is generally complicated by the high viscosity of the resulting polymer solution. We report the synthesis of UHMW double-hydrophilic block copolymers (DHBCs) by leveraging polymerization-induced self-assembly (PISA) to obtain concentrated but free-flowing dispersions of UHMW water-soluble particles. By polymerizing N-acryloylmorpholine (NAM) from a poly(N,N-dimethylacrylamide) (PDMA) macroiniferter in the presence of a kosmotropic salt ((NH₄)₂SO₄), the salt sensitivity of the resultant poly(NAM) (PNAM) block induced self-assembly to result in free-flowing dispersions of polymeric particles (η < 6 Pa·s), despite

SUBMITTER: Eades CB 

PROVIDER: S-EPMC11867045 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature