Microstructure and solvent distribution in cross-linked diblock copolymer gels

D. A. Durkee; E. D. Gomez; M. W. Ellsworth; A. T. Bell; N. P. Balsera

doi:10.1021/ma0629485

Microstructure and solvent distribution in cross-linked diblock copolymer gels

D. A. Durkee, E. D. Gomez, M. W. Ellsworth, A. T. Bell, N. P. Balsera

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9 Scopus citations

Abstract

Gels were created by irradiating poly(α-methylstyrene-block-isoprene) (PaMS-I) and poly(vinylferrocenium triflate-Wocfc-isoprene) (PVFT-I) copolymers with an electron beam and swelling the resulting cross-linked solids in good solvents. The radiation cross-links the polyisoprene (PI) block, induces chain scission of the poly(α-methylstyrene) block (PaMS), and has no effect on the poly(vinylferrocenium triflate) (PVTF) block. After extraction of un-cross-linked chains, the PaMS-I gels comprise sol vent-filled, open channels inside a swollen PI network, while the swollen PVFT-I gels comprise channels of solvated PVFT chains inside a swollen PI network, The dependence of the structure, composition, and cross-linking density of the swollen microphases on radiation dose is determined by combining small-angle neutron scattering experiments with conventional gel characterization methods.

Original language	English (US)
Pages (from-to)	5103-5110
Number of pages	8
Journal	Macromolecules
Volume	40
Issue number	14
DOIs	https://doi.org/10.1021/ma0629485
State	Published - Jul 10 2007

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma0629485

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title = "Microstructure and solvent distribution in cross-linked diblock copolymer gels",

abstract = "Gels were created by irradiating poly(α-methylstyrene-block-isoprene) (PaMS-I) and poly(vinylferrocenium triflate-Wocfc-isoprene) (PVFT-I) copolymers with an electron beam and swelling the resulting cross-linked solids in good solvents. The radiation cross-links the polyisoprene (PI) block, induces chain scission of the poly(α-methylstyrene) block (PaMS), and has no effect on the poly(vinylferrocenium triflate) (PVTF) block. After extraction of un-cross-linked chains, the PaMS-I gels comprise sol vent-filled, open channels inside a swollen PI network, while the swollen PVFT-I gels comprise channels of solvated PVFT chains inside a swollen PI network, The dependence of the structure, composition, and cross-linking density of the swollen microphases on radiation dose is determined by combining small-angle neutron scattering experiments with conventional gel characterization methods.",

author = "Durkee, {D. A.} and Gomez, {E. D.} and Ellsworth, {M. W.} and Bell, {A. T.} and Balsera, {N. P.}",

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T1 - Microstructure and solvent distribution in cross-linked diblock copolymer gels

AU - Durkee, D. A.

AU - Gomez, E. D.

AU - Ellsworth, M. W.

AU - Bell, A. T.

AU - Balsera, N. P.

PY - 2007/7/10

Y1 - 2007/7/10

N2 - Gels were created by irradiating poly(α-methylstyrene-block-isoprene) (PaMS-I) and poly(vinylferrocenium triflate-Wocfc-isoprene) (PVFT-I) copolymers with an electron beam and swelling the resulting cross-linked solids in good solvents. The radiation cross-links the polyisoprene (PI) block, induces chain scission of the poly(α-methylstyrene) block (PaMS), and has no effect on the poly(vinylferrocenium triflate) (PVTF) block. After extraction of un-cross-linked chains, the PaMS-I gels comprise sol vent-filled, open channels inside a swollen PI network, while the swollen PVFT-I gels comprise channels of solvated PVFT chains inside a swollen PI network, The dependence of the structure, composition, and cross-linking density of the swollen microphases on radiation dose is determined by combining small-angle neutron scattering experiments with conventional gel characterization methods.

AB - Gels were created by irradiating poly(α-methylstyrene-block-isoprene) (PaMS-I) and poly(vinylferrocenium triflate-Wocfc-isoprene) (PVFT-I) copolymers with an electron beam and swelling the resulting cross-linked solids in good solvents. The radiation cross-links the polyisoprene (PI) block, induces chain scission of the poly(α-methylstyrene) block (PaMS), and has no effect on the poly(vinylferrocenium triflate) (PVTF) block. After extraction of un-cross-linked chains, the PaMS-I gels comprise sol vent-filled, open channels inside a swollen PI network, while the swollen PVFT-I gels comprise channels of solvated PVFT chains inside a swollen PI network, The dependence of the structure, composition, and cross-linking density of the swollen microphases on radiation dose is determined by combining small-angle neutron scattering experiments with conventional gel characterization methods.

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JO - Macromolecules

JF - Macromolecules

IS - 14

ER -

Microstructure and solvent distribution in cross-linked diblock copolymer gels

Abstract

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