Spin-echo small-angle neutron scattering (SESANS) studies of diblock copolymer nanoparticles

被引：7

作者：

Smith, Gregory N. ^{[1
,3
]}

Cunningham, Victoria J. ^{[1
,4
]}

Canning, Sarah L. ^{[1
,5
]}

Derry, Matthew J. ^{[1
]}

Cooper, J. F. K. ^{[2
]}

Washington, A. L. ^{[2
]}

Armes, Steven P. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Chem, Dainton Bldg,Brook Hill, Sheffield S3 7HF, S Yorkshire, England

[2] Rutherford Appleton Lab, ISIS, STFC, Chilton OX11 0QX, Oxon, England

[3] Univ Copenhagen, Niels Bohr Inst, Univ Pk 5, DK-2100 Copenhagen O, Denmark

[4] Scott Bader Co Ltd, Wollaston NN29 7RL, England

[5] Fujifilm Special Ink Syst Ltd, Pysons Rd, Broadstairs CT10 2LE, Kent, England

来源：

SOFT MATTER | 2019年 / 15卷 / 01期

基金：

英国科学技术设施理事会; 英国工程与自然科学研究理事会; 欧盟地平线“2020”;

关键词：

TRANSITIONS; GELS;

D O I：

10.1039/c8sm01425f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 (Macromolecules, 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.

引用

页码：17 / 21

页数：5

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