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36 results on '"Shaw, M.T"'

6. Rheo-optical behavior of binary polymer blends: the effect of simple shear flow on phase behavior

Author

Chen, Z.J., Wu, R.-J., Shaw, M.T., Weiss, R.A., Fernandez, M.L., and Higgins, J.S.

Subjects
Polymers -- Rheology, Engineering and manufacturing industries, Science and technology
Abstract

The phase behavior of polymer blends under simple shear flow has been studied using a custom-designed rheo-optical system consisting of a two-dimensional small-angle light scattering (SALS) device incorporated into a conventional rheometer. Two-dimensional SALS images were gathered for model polymer blend systems with different quiescent phase behavior: polystyrene/polyisobutylene (PS/PIB) that exhibits upper critical solution temperature phase behavior and polystyrene/poly(vinyl methyl ether) (PS/PVME) that shows lower critical solution temperature phase behavior. For the PS/PIB blend, shear-induced phase mixing occurred at a critical shear rate. Below that critical shear rate, the dispersed phase was highly elongated parallel to the flow direction. For PS/PVME blends, a streak scattering pattern was observed even though the sample became optically clear after shearing. We observed, apparently for the first time, the development of a bright-streak pattern from a transient dark-streak pattern for a polymer blend system under shear. Rheo-microscopy studies revealed an intriguing wave pattern that developed coincident with the observation of a streak pattern by SALS. The relationship between the two phenomena has not yet been established., INTRODUCTION The influence of flow on the phase behavior of polymer solutions has been recognized for more than four decades (1, 2 and ref. therein), though the effect on polymer [...]

Published
1995

9. Nanostructured Microdroplets and Concentric Nanorings Fabricated by Surface-directed Dewetting of a Block Copolymer

Author

Farrell, R.A, Kehagias, N., Shaw, M.T, Reboud, V., Zelsmann, M., Holmes, J.D., Sotomayor Torres, C.M, Morris, M.A., Laboratoire des technologies de la microélectronique (LTM), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and Clot, Marielle

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

10. Surface-directed dewetting of a block copolymer for fabricating highly uniform nanostructured microdroplets and concentric nanorings

Author

Farrell, R.A, Kehagias, N., Shaw, M.T, Reboud, V., Zelsmann, M., Holmes, J.D., Sotomayor Torres, C.M, Morris, M.A., Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Clot, Marielle, and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

11. Multi-scale lithography for fabricating extremely periodic micro/nano-droplets and concentric nano-rings by combining block copolymer self-assembly and nano-imprint lithography

Author

Farrell, R.A, Kehagias, N., Shaw, M.T, Fitzgerald, T.G., Reboud, V., Zelsmann, M., Holmes, J.D., Sotomayor Torres, C.M, Morris, M.A., Laboratoire des technologies de la microélectronique (LTM), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and Clot, Marielle

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

12. Plastic deformation' mechanism and phase transformation in a shear-induced metastable hexagonally perforated layer phase of a polystyrene-b-poly(ethylene oxide) diblock copolymer

Author

Zhu, L., Huang, P., Chen, W.Y., Weng, X., Cheng, S.Z.D., Ge, Q., Quirk, R.P., Senador, T., Shaw, M.T., Thomas, E.L., Lotz, B., Hsiao, B.S., Yeh, F., Liu, L., Wehr, Monique, Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft], [PHYS.COND.CM-SCM] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]
Published
2003

23. Electrorheological Properties of Anisotropically Filled Elastomers.

Author

Liu, Bo, Boggs, S.A., and Shaw, M.T.

Subjects
ELASTOMERS, PROPERTIES of matter, ANALYTICAL chemistry
Abstract

Presents a study which reported the results of numerical simulations for the change of both mechanical and electrical properties of anisotropically filled elastomers. Problem formulation and numerical simulation; Results and discussion; Conclusion.

Published
2001
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24. A rheo-light-scattering instrument for the study of the phase behavior of polymer blends under...

Author

Wu, R., Shaw, M.T., and Weiss, R.A.

Subjects
*LIGHT scattering, *RHEOMETERS, *POLYMERS, *EQUIPMENT & supplies
Abstract

Describes the fabrication of a rheo-light scattering instrument for investigating the influence of shear on the phase behavior of polymer blends from a commercial parallel-plate rheometer. Projection of the laser light scattering; Angular velocities generated by the rheometer; Performance and accuracy of the light-scattering instrument.

Published
1995
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27. CLINICAL HÆMATOLOGY

Author

Topley, Elizabeth, primary, Poller, L., additional, Shaw, M.T., additional, Rowan, R.M., additional, and Cleland, J.F., additional

Published
1969
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29. NO WITHDRAWAL

Author

Shaw, M.T., primary, Sheldon, A.F., additional, Cockshut, R.W., additional, Clyne, M.B., additional, Hardman, B.M.H., additional, Barber, Geoffrey, additional, Macalister, I., additional, Paterson-Brown, P.N., additional, and Buchanan, D.A., additional

Published
1965
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