Elastomers with reversible nanoporosity

Piotr P. Szewczykowski; Kenneth Andersen; Lars Schulte; Kell Mortensen; Martin Etchells Vigild; Sokol Ndoni

doi:10.1021/ma900198k

Elastomers with reversible nanoporosity

Piotr P. Szewczykowski, Kenneth Andersen, Lars Schulte, Kell Mortensen, Martin Etchells Vigild, Sokol Ndoni

7 Citations (Scopus)

Abstract

An elastomer was created via cross-linking a diene block of a polyisoprene-polydimethylsiloxane (PI-PDMS) block copolymer in the ordered state of hexagonal morphology, followed by the quantitative removal of the PDMS component. The elastomer material collapsed following etching of the PDMS and apparently showed no resulting nanoporosity or structure resembling the precursor morphology in contrast to similar polydiene-based nanoporous material. However, the collapsed elastomer displayed surprising properties when exposed to a solvent. In the gel state the material recovers the original nanostructure and displays liquid-filled cavities. Upon several cycles of swelling and drying the cavities open and close in a reversible fashion. When exposed to a nonsolvent, the material remains collapsed. This discriminating behavior of liquid-material interaction holds potential for the use of these materials in advanced separation or load-release systems.

Original language	English
Journal	Macromolecules
Volume	42
Issue number	15
Pages (from-to)	5636-5641
Number of pages	6
ISSN	0024-9297
DOIs	https://doi.org/10.1021/ma900198k
Publication status	Published - 2009

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10.1021/ma900198k

Cite this

@article{9da8eda09e1111debc73000ea68e967b,

title = "Elastomers with reversible nanoporosity",

abstract = "An elastomer was created via cross-linking a diene block of a polyisoprene-polydimethylsiloxane (PI-PDMS) block copolymer in the ordered state of hexagonal morphology, followed by the quantitative removal of the PDMS component. The elastomer material collapsed following etching of the PDMS and apparently showed no resulting nanoporosity or structure resembling the precursor morphology in contrast to similar polydiene-based nanoporous material. However, the collapsed elastomer displayed surprising properties when exposed to a solvent. In the gel state the material recovers the original nanostructure and displays liquid-filled cavities. Upon several cycles of swelling and drying the cavities open and close in a reversible fashion. When exposed to a nonsolvent, the material remains collapsed. This discriminating behavior of liquid-material interaction holds potential for the use of these materials in advanced separation or load-release systems.",

author = "Szewczykowski, {Piotr P.} and Kenneth Andersen and Lars Schulte and Kell Mortensen and Vigild, {Martin Etchells} and Sokol Ndoni",

year = "2009",

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T1 - Elastomers with reversible nanoporosity

AU - Szewczykowski, Piotr P.

AU - Andersen, Kenneth

AU - Schulte, Lars

AU - Mortensen, Kell

AU - Vigild, Martin Etchells

AU - Ndoni, Sokol

PY - 2009

Y1 - 2009

N2 - An elastomer was created via cross-linking a diene block of a polyisoprene-polydimethylsiloxane (PI-PDMS) block copolymer in the ordered state of hexagonal morphology, followed by the quantitative removal of the PDMS component. The elastomer material collapsed following etching of the PDMS and apparently showed no resulting nanoporosity or structure resembling the precursor morphology in contrast to similar polydiene-based nanoporous material. However, the collapsed elastomer displayed surprising properties when exposed to a solvent. In the gel state the material recovers the original nanostructure and displays liquid-filled cavities. Upon several cycles of swelling and drying the cavities open and close in a reversible fashion. When exposed to a nonsolvent, the material remains collapsed. This discriminating behavior of liquid-material interaction holds potential for the use of these materials in advanced separation or load-release systems.

AB - An elastomer was created via cross-linking a diene block of a polyisoprene-polydimethylsiloxane (PI-PDMS) block copolymer in the ordered state of hexagonal morphology, followed by the quantitative removal of the PDMS component. The elastomer material collapsed following etching of the PDMS and apparently showed no resulting nanoporosity or structure resembling the precursor morphology in contrast to similar polydiene-based nanoporous material. However, the collapsed elastomer displayed surprising properties when exposed to a solvent. In the gel state the material recovers the original nanostructure and displays liquid-filled cavities. Upon several cycles of swelling and drying the cavities open and close in a reversible fashion. When exposed to a nonsolvent, the material remains collapsed. This discriminating behavior of liquid-material interaction holds potential for the use of these materials in advanced separation or load-release systems.

U2 - 10.1021/ma900198k

DO - 10.1021/ma900198k

M3 - Journal article

SN - 0024-9297

VL - 42

SP - 5636

EP - 5641

JO - Macromolecules

JF - Macromolecules

IS - 15

ER -