Spin-echo small-angle neutron scattering (SESANS) studies of diblock copolymer nanoparticles
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Spin-echo small-angle neutron scattering (SESANS) studies of diblock copolymer nanoparticles. / Smith, Gregory N; Cunningham, Victoria; Canning, Sarah; Derry, Matthew J; Cooper, Jos; Washington, Adam; Armes, Steven P.
I: Soft Matter, Bind 15, Nr. 1, 2019, s. 17-21.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Spin-echo small-angle neutron scattering (SESANS) studies of diblock copolymer nanoparticles
AU - Smith, Gregory N
AU - Cunningham, Victoria
AU - Canning, Sarah
AU - Derry, Matthew J
AU - Cooper, Jos
AU - Washington, Adam
AU - Armes, Steven P
PY - 2019
Y1 - 2019
N2 - Poly(glycerol monomethacrylate)–poly(benzyl methacrylate) (PGMA–PBzMA) diblock copolymer nanoparticles were synthesized via polymerization-induced self-assembly (PISA) using reversible addition–fragmentation chain-transfer (RAFT) aqueous emulsion polymerization in D2O. Such PISA syntheses produce sterically-stabilized nanoparticles in situ and can be performed at relatively high copolymer concentrations (up to 50 wt. %). This PGMA–PBzMA formulation is known to form only spherical nanoparticles in water using aqueous emulsion polymerization Macromolecule, 2014, 47, 5613–5623), which makes it an ideal model system for exploring new characterization methods. The polymer micelles were characterized using small-angle X-ray scattering (SAXS) and a recently developed form of neutron scattering, spin-echo small-angle neutron scattering (SESANS). As far as we are aware, this is the first report of a study of polymer micelles by SESANS, and the data agree well with reciprocal space scattering. Using this technique enables characterization of the concentrated, as synthesized dispersions directly without dilution, and this will provide a method to study self-assembled polymer systems that have concentration dependent morphologies, while still maintaining the advantages of scattering techniques.
AB - Poly(glycerol monomethacrylate)–poly(benzyl methacrylate) (PGMA–PBzMA) diblock copolymer nanoparticles were synthesized via polymerization-induced self-assembly (PISA) using reversible addition–fragmentation chain-transfer (RAFT) aqueous emulsion polymerization in D2O. Such PISA syntheses produce sterically-stabilized nanoparticles in situ and can be performed at relatively high copolymer concentrations (up to 50 wt. %). This PGMA–PBzMA formulation is known to form only spherical nanoparticles in water using aqueous emulsion polymerization Macromolecule, 2014, 47, 5613–5623), which makes it an ideal model system for exploring new characterization methods. The polymer micelles were characterized using small-angle X-ray scattering (SAXS) and a recently developed form of neutron scattering, spin-echo small-angle neutron scattering (SESANS). As far as we are aware, this is the first report of a study of polymer micelles by SESANS, and the data agree well with reciprocal space scattering. Using this technique enables characterization of the concentrated, as synthesized dispersions directly without dilution, and this will provide a method to study self-assembled polymer systems that have concentration dependent morphologies, while still maintaining the advantages of scattering techniques.
U2 - 10.1039/C8SM01425F
DO - 10.1039/C8SM01425F
M3 - Journal article
VL - 15
SP - 17
EP - 21
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
SN - 1744-683X
IS - 1
ER -
ID: 209568711