Dynamics of intermediate-length alkane films absorbed on graphite

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The dynamics of flexible chain molecules near a solid interface is of fundamental interest in polymer science. This paper makes a preliminary report on a quasielastic neutron scattering study of the dynamics of monolayer films of C{sub 24}H{sub 66} adsorbed on graphite. Quasielastic scattering was observed at temperatures as low as {approximately}180 K, well below the monolayer melting temperature of 340 K. Preliminary analysis of the data indicates that at 230 K the entire molecule executes a rolling motion about its long axis while the terminal methyl groups exhibit relatively rapid reorientation.

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6 p.

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Herwig, K. W.; Fuhrmann, D.; Criswell, L.; Taub, H.; Hansen, F. Y.; Dimeo, R. et al. January 28, 2000.

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  • Argonne National Laboratory
    Publisher Info: Argonne National Laboratory, Argonne, IL (United States)
    Place of Publication: Argonne, Illinois

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Description

The dynamics of flexible chain molecules near a solid interface is of fundamental interest in polymer science. This paper makes a preliminary report on a quasielastic neutron scattering study of the dynamics of monolayer films of C{sub 24}H{sub 66} adsorbed on graphite. Quasielastic scattering was observed at temperatures as low as {approximately}180 K, well below the monolayer melting temperature of 340 K. Preliminary analysis of the data indicates that at 230 K the entire molecule executes a rolling motion about its long axis while the terminal methyl groups exhibit relatively rapid reorientation.

Physical Description

6 p.

Notes

OSTI as DE00751895

Medium: P; Size: 6 pages

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  • International Workshop on Dynamics in Confinement, Grenoble (FR), 01/26/2000--01/29/2000

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  • Report No.: ANL/IPNS/CP-100983
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 751895
  • Archival Resource Key: ark:/67531/metadc711105

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  • January 28, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 12:59 p.m.

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Herwig, K. W.; Fuhrmann, D.; Criswell, L.; Taub, H.; Hansen, F. Y.; Dimeo, R. et al. Dynamics of intermediate-length alkane films absorbed on graphite, article, January 28, 2000; Argonne, Illinois. (digital.library.unt.edu/ark:/67531/metadc711105/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.