Control of polystyrene film dewetting through sulfonation and metal complexation

被引:71
作者
Feng, Y
Karim, A [1 ]
Weiss, RA
Douglas, JF
Han, CC
机构
[1] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
[2] Natl Inst Stand & Technol, Div Polymers, Gaithersburg, MD 20899 USA
关键词
D O I
10.1021/ma9706541
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The dewetting of low molecular weight sulfonated polystyrene ionomers (SPS) on inorganic silicon oxide substrates is compared with unmodified polystyrene (PS, M-w, = 4000) using a combination of X-ray reflectivity, optical and atomic force microscopy. The amounts of sulfonate group and metal counterion (Li-, Zn2+) were both varied in our study. Unlike unmodified PS, which readily dewets the substrate, a strong inhibition of dewetting occurs for low sulfonation (congruent to 2.3 mol %)!, and no apparent dewetting was found for high sulfonation !(greater than or equal to 7 mol %). For ZnSPS, dewetting was not observed in any of the films, even for those with very low sulfonation. Comparison with bulk rheological data suggests that inter-and intramolecular ionomer complexation may be important in retarding the dewetting process (a nonequilibrium effect), in addition to an increased wettability arising from long-range electrostatic polymer-surface interactions.
引用
收藏
页码:484 / 493
页数:10
相关论文
共 45 条
  • [11] SELF-ORGANIZATION OF POLYMER BRUSH LAYERS IN A POOR SOLVENT
    KARIM, A
    TSUKRUK, VV
    DOUGLAS, JF
    SATIJA, SK
    FETTERS, LJ
    RENEKER, DH
    FOSTER, MD
    [J]. JOURNAL DE PHYSIQUE II, 1995, 5 (10): : 1441 - 1456
  • [12] LICARI JJ, 1970, PLASTIC COATINGS ELE
  • [13] MAKOWSKI H, 1975, Patent No. 3870841
  • [14] Interfacial segregation in disordered block copolymers: Effect of tunable surface potentials
    Mansky, P
    Russell, TP
    Hawker, CJ
    Mays, J
    Cook, DC
    Satija, SK
    [J]. PHYSICAL REVIEW LETTERS, 1997, 79 (02) : 237 - 240
  • [15] SULFONATED POLYSULFONE
    NOSHAY, A
    ROBESON, LM
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1976, 20 (07) : 1885 - 1903
  • [16] SPONTANEOUSLY ORGANIZED MOLECULAR ASSEMBLIES .3. PREPARATION AND PROPERTIES OF SOLUTION ADSORBED MONOLAYERS OF ORGANIC DISULFIDES ON GOLD SURFACES
    NUZZO, RG
    FUSCO, FA
    ALLARA, DL
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (08) : 2358 - 2368
  • [17] PATIL R, 1990, POLYM COMMUN, V31, P455
  • [18] DYNAMICS OF DEWETTING
    REDON, C
    BROCHARDWYART, F
    RONDELEZ, F
    [J]. PHYSICAL REVIEW LETTERS, 1991, 66 (06) : 715 - 718
  • [19] REGISTER RA, 1997, IONOMERS SYNTHESIS S, P208
  • [20] DEWETTING AS A PROBE OF POLYMER MOBILITY IN THIN-FILMS
    REITER, G
    [J]. MACROMOLECULES, 1994, 27 (11) : 3046 - 3052