Preparation of non-spherical particles from amphiphilic block copolymers

Kristian Kempe; Ross A. Wylie; Michael D. Dimitriou; Helen Tran; Richard Hoogenboom; Ulrich S. Schubert; Craig J. Hawker; Luis M. Campos; Luke A. Connal

doi:10.1002/pola.27927

Preparation of non-spherical particles from amphiphilic block copolymers

Kristian Kempe, Ross A. Wylie, Michael D. Dimitriou, Helen Tran, Richard Hoogenboom, Ulrich S. Schubert, Craig J. Hawker, Luis M. Campos, Luke A. Connal^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Simple self-assembly techniques to fabricate non-spherical polymer particles, where surface composition and shape can be tuned through temperature and the choice of non-solvents was developed. A series of amphiphilic polystyrene-b-poly(2-ethyl-2-oxazoline) block copolymers were prepared and through solvent exchange techniques using varying non-solvent composition a range of non-spherical particles were formed. Faceted phase separated particles approximately 300 nm in diameter were obtained when self-assembled from tetrahydrofuran (THF) into water compared with unique large multivesicular particles of 1200 nm size being obtained when assembled from THF into ethanol (EtOH). A range of intermediate structures were also prepared from a three part solvent system THF/water/EtOH. These techniques present new tools to engineer the self-assembly of non-spherical polymer particles.

Original language	English
Pages (from-to)	750-757
Number of pages	8
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	54
Issue number	6
DOIs	https://doi.org/10.1002/pola.27927
Publication status	Published - 15 Mar 2016
Externally published	Yes

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title = "Preparation of non-spherical particles from amphiphilic block copolymers",

abstract = "Simple self-assembly techniques to fabricate non-spherical polymer particles, where surface composition and shape can be tuned through temperature and the choice of non-solvents was developed. A series of amphiphilic polystyrene-b-poly(2-ethyl-2-oxazoline) block copolymers were prepared and through solvent exchange techniques using varying non-solvent composition a range of non-spherical particles were formed. Faceted phase separated particles approximately 300 nm in diameter were obtained when self-assembled from tetrahydrofuran (THF) into water compared with unique large multivesicular particles of 1200 nm size being obtained when assembled from THF into ethanol (EtOH). A range of intermediate structures were also prepared from a three part solvent system THF/water/EtOH. These techniques present new tools to engineer the self-assembly of non-spherical polymer particles.",

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author = "Kristian Kempe and Wylie, {Ross A.} and Dimitriou, {Michael D.} and Helen Tran and Richard Hoogenboom and Schubert, {Ulrich S.} and Hawker, {Craig J.} and Campos, {Luis M.} and Connal, {Luke A.}",

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T1 - Preparation of non-spherical particles from amphiphilic block copolymers

AU - Kempe, Kristian

AU - Wylie, Ross A.

AU - Dimitriou, Michael D.

AU - Tran, Helen

AU - Hoogenboom, Richard

AU - Schubert, Ulrich S.

AU - Hawker, Craig J.

AU - Campos, Luis M.

AU - Connal, Luke A.

PY - 2016/3/15

Y1 - 2016/3/15

N2 - Simple self-assembly techniques to fabricate non-spherical polymer particles, where surface composition and shape can be tuned through temperature and the choice of non-solvents was developed. A series of amphiphilic polystyrene-b-poly(2-ethyl-2-oxazoline) block copolymers were prepared and through solvent exchange techniques using varying non-solvent composition a range of non-spherical particles were formed. Faceted phase separated particles approximately 300 nm in diameter were obtained when self-assembled from tetrahydrofuran (THF) into water compared with unique large multivesicular particles of 1200 nm size being obtained when assembled from THF into ethanol (EtOH). A range of intermediate structures were also prepared from a three part solvent system THF/water/EtOH. These techniques present new tools to engineer the self-assembly of non-spherical polymer particles.

AB - Simple self-assembly techniques to fabricate non-spherical polymer particles, where surface composition and shape can be tuned through temperature and the choice of non-solvents was developed. A series of amphiphilic polystyrene-b-poly(2-ethyl-2-oxazoline) block copolymers were prepared and through solvent exchange techniques using varying non-solvent composition a range of non-spherical particles were formed. Faceted phase separated particles approximately 300 nm in diameter were obtained when self-assembled from tetrahydrofuran (THF) into water compared with unique large multivesicular particles of 1200 nm size being obtained when assembled from THF into ethanol (EtOH). A range of intermediate structures were also prepared from a three part solvent system THF/water/EtOH. These techniques present new tools to engineer the self-assembly of non-spherical polymer particles.

KW - block copolymers

KW - nanoparticles

KW - self-assembly

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DO - 10.1002/pola.27927

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EP - 757

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 6

ER -

Preparation of non-spherical particles from amphiphilic block copolymers

Abstract

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