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Title: Effect of tethering on the surface dynamics of a thin polymer melt layer

Journal Article · · Soft Matter
DOI:https://doi.org/10.1039/C6SM00179C· OSTI ID:1339950
 [1];  [2];  [3];  [3];  [4];  [5]
  1. Central R&D, Istanbul (Turkey). Materials Technologies
  2. Bogazici Univ., Istanbul (Turkey). Dept. of Chemistry
  3. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). NIST Center for Neutron Research
  5. Univ. of Akron, OH (United States). Dept. of Polymer Science
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The surface height fluctuations of a layer of low molecular weight (2.2k) untethered perdeuterated polystyrene (dPS) chains adjacent to a densely grafted polystyrene brush are slowed dramatically. Due to the interpenetration of the brush with the layer of “untethered chains” a hydrodynamic continuum theory can only describe the fluctuations when the effective thickness of the film is taken to be that which remains above the swollen brush. Furthermore, the portion of the film of initially untethered chains that interpenetrates with the brush becomes so viscous as to effectively play the role of a rigid substrate. They provide a route for tailoring polymer layer surface properties such as wetting, adhesion and friction, since these hybrid samples contain a covalently tethered layer at the bottom, does not readily dewet, and are more robust than thin layers of untethered short chains on rigid substrates.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1339950
Journal Information:
Soft Matter, Vol. 12, Issue 24; ISSN 1744-683X
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Cited By (2)

Unexpected Molecular Weight Dependence to the Physical Aging of Thin Polystyrene Films Present at Ultra‐High Molecular Weights journal February 2019
Role of Chain Connectivity across an Interface on the Dynamics of a Nanostructured Block Copolymer journal December 2018

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