Poly(glycerol monomethacrylate)-Poly(benzyl methacrylate) Diblock Copolymer Nanoparticles via RAFT Emulsion Polymerization: Synthesis, Characterization, and Interfacial Activity

By Victoria J. Cunningham, Abdullah M. Alswieleh, K. L. Thompson, Mark C. Williams, J. Graham, Leggett, S. Armes, O. M. Musa. 2014

162 citations recorded by the source corpus.

A poly(glycerol monomethacrylate) (PGMA) macromolecular chain transfer agent has been utilized to polymerize benzyl methacrylate (BzMA) via reversible addition–fragmentation chain transfer (RAFT)-mediated aqueous emulsion polymerization. This formulation leads to the efficient formation of spherical diblock copolymer nanoparticles at up to 50% solids. The degree of polymerization (DP) of the core-forming PBzMA block has been systematically varied to control the mean particle diameter from 20 to 193 nm. Conversions of more than 99% were achieved for PGMA51–PBzMA250 within 6 h at 70 °C using macro-CTA/initiator molar ratios ranging from 3.0 to 10.0. DMF GPC analyses confirmed that relatively low polydispersities (Mw/Mn < 1.30) and high blocking efficiencies could be achieved. These spherical nanoparticles are stable to both freeze–thaw cycles and the presence of added salt (up to 0.25 M MgSO4). Three sets of PGMA51–PBzMAx spherical nanoparticles have been used to prepare stable Pickering emulsions at variou...

Subfields: Materials Chemistry, Organic Chemistry

View Paper: https://www.semanticscholar.org/paper/0d99af5e3024bff1f99897e42c059782f3bf1b94

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In Materials Chemistry

1. L. Fielding
2. M. Derry
3. S. Armes

In Organic Chemistry

1. L. Fielding
2. M. Derry
3. S. Armes

Citations in the corpus

• Polymerization-induced self-assembly of block copolymer nanoparticles via RAFT non-aqueous dispersion polymerization (2016, methodology): “The development of robust PISA formulations provided a timely opportunity to compare the performance of hydrophilic block copolymer spheres, worms or vesicles synthesized via RAFT aqueous dispersion polymerization for the preparation of o/w Pickering emulsions [20, 40, 108].”