Correlation of nanowear patterns to viscoelastic response in a thin polystyrene melt

被引:42
作者
Schmidt, RH
Haugstad, G
Gladfelter, WL
机构
[1] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Ctr Interfacial Engn, Minneapolis, MN 55455 USA
关键词
D O I
10.1021/la980739a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The response of a thin-film polystyrene melt to a raster-scanned scanning force microscope tip was investigated. At high temperatures the scanning process induced intricate pattern formation whose quantitative characteristics were compared at different temperatures and scan rates. The dependence of the patterns on temperature and scan rate was consistent with time-temperature superposition as described by the Williams-Landel-Ferry (WLF) equation. WLF analysis implies an increased glass transition temperature derived from elevated pressure beneath the tip. The latter provides an estimate of the radius of the affected film region near the tip.
引用
收藏
页码:317 / 321
页数:5
相关论文
共 18 条
  • [1] Bhushan B., 1995, HDB MICRONANOTRIBOLO
  • [2] *DIG INSTR, 1993, NAN 3 CONTR SYST US
  • [3] DRAKE JM, 1996, DYNAMICS SMALL CON 3, V464
  • [4] BUNDLE FORMATION OF POLYMERS WITH AN ATOMIC-FORCE MICROSCOPE IN CONTACT MODE - A FRICTION VERSUS PEELING PROCESS
    ELKAAKOUR, Z
    AIME, JP
    BOUHACINA, T
    ODIN, C
    MASUDA, T
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (24) : 3231 - 3234
  • [5] Ferry D.J., 1980, Viscoelastic Properties of Polymers, V3e
  • [6] Effect of free surfaces on the glass transition temperature of thin polymer films
    Forrest, JA
    DalnokiVeress, K
    Stevens, JR
    Dutcher, JR
    [J]. PHYSICAL REVIEW LETTERS, 1996, 77 (10) : 2002 - 2005
  • [7] Interface and chain confinement effects on the glass transition temperature of thin polymer films
    Forrest, JA
    DalnokiVeress, K
    Dutcher, JR
    [J]. PHYSICAL REVIEW E, 1997, 56 (05): : 5705 - 5716
  • [8] Fundamental Mechanisms of friction and lubrication of materials
    Hsu, SM
    [J]. LANGMUIR, 1996, 12 (19) : 4482 - 4485
  • [9] ADHESION FORCES BETWEEN SURFACES IN LIQUIDS AND CONDENSABLE VAPORS
    ISRAELACHVILI, JN
    [J]. SURFACE SCIENCE REPORTS, 1992, 14 (03) : 109 - 159
  • [10] AN ATOMIC-FORCE MICROSCOPY STUDY OF POLYESTER SURFACES
    JING, J
    HENRIKSEN, PN
    WANG, H
    MARTENY, P
    [J]. JOURNAL OF MATERIALS SCIENCE, 1995, 30 (22) : 5700 - 5704