Morphologies in Acetone-Annealed Polystyrene-Poly(methyl methacrylate) Diblock Copolymer Thin Films

被引:1
作者
Pan Zhongcheng [1 ]
Peng Juan [1 ]
机构
[1] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
基金
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词
diblock copolymer; film morphology; aceton vapor annealing; MICRODOMAIN ORIENTATION; BLOCK-COPOLYMERS; DOMAIN ORIENTATION; PHASE-BEHAVIOR; SURFACE; TRANSITION; DEPENDENCE; BLENDS;
D O I
10.6023/A1201191
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The time development of morphologies and structures of symmetric and asymmetric polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) diblock copolymer thin films after annealing in acetone vapor was investigated by tapping mode atomic force microscopy (AFM). Film thickness played an important role in the morphology evolution of symmetric PS-b-PMMA (f(PS)approximate to f(PMMA), f(PS) is the volume fraction of the PS in PS-b-PMMA, f(PMMA) is the volume fraction of the PMMA) thin film. When film thickness was controlled according to their equilibrium bulk lamellar period, all the investigated thin films of PS-b-PMMA with different molecular weights can change from disordered pattern to nanoscale depression and at last to striped structures. In the case of asymmetric PS-b-PMMA systems, when the content of PS segment was low (25%, 36%), film morphology changed from disordered state to regularly packed spheres and directly to stripes, respectively; when the content of PS segment was high (70%), film morphology changed from disordered pattern to relatively flat state. The formation mechanisms of different film morphologies have been discussed in detail.
引用
收藏
页码:1371 / 1378
页数:8
相关论文
共 41 条
  • [1] Phase Behavior of Polystyrene-b-poly(methyl methacrylate) Diblock Copolymer
    Ahn, Hyungju
    Ryu, Du Yeol
    Kim, Youngmin
    Kwon, Kyung Wook
    Lee, Jumi
    Cho, Junhan
    [J]. MACROMOLECULES, 2009, 42 (20) : 7897 - 7902
  • [2] Competition of lamellar orientation in thin films of a symmetric poly(styrene)-b-poly(L-lactide)diblock copolymer in melt state
    Chen, Dongju
    Gong, Yumei
    Huang, Haiying
    He, Tianbai
    Zhang, Fajun
    [J]. MACROMOLECULES, 2007, 40 (18) : 6631 - 6637
  • [3] Lateral nanopatterns in thin diblock copolymer films induced by selective solvents
    Chen, Y
    Huang, HY
    Hu, ZJ
    He, TB
    [J]. LANGMUIR, 2004, 20 (09) : 3805 - 3808
  • [4] DIFFUSION OF DYE MOLECULES IN POLYMERS ABOVE AND BELOW THE GLASS-TRANSITION TEMPERATURE STUDIED BY THE HOLOGRAPHIC GRATING TECHNIQUE
    COUTANDIN, J
    EHLICH, D
    SILLESCU, H
    WANG, CH
    [J]. MACROMOLECULES, 1985, 18 (03) : 587 - 589
  • [5] Thin film morphologies of ABC triblock copolymers prepared from solution
    Elbs, H
    Drummer, C
    Abetz, V
    Krausch, G
    [J]. MACROMOLECULES, 2002, 35 (14) : 5570 - 5577
  • [6] Inverted to normal phase transition in solution-cast polystyrene-poly(methyl methacrylate) block copolymer thin films
    Gong, YM
    Huang, HY
    Hu, ZJ
    Chen, YZ
    Chen, DJ
    Wang, ZB
    He, TB
    [J]. MACROMOLECULES, 2006, 39 (09) : 3369 - 3376
  • [7] Ring-shaped morphology in solution-cast polystyrene-poly(methyl methacrylate) block copolymer thin films
    Gong, YM
    Hu, ZJ
    Chen, YZ
    Huang, HY
    He, TB
    [J]. LANGMUIR, 2005, 21 (25) : 11870 - 11877
  • [8] Microdomain Orientation of Diblock Copolymer Ultrathin Films Solvent Annealed at Low Temperatures
    Grozea, Claudia M.
    Li, Isaac T. S.
    Grozea, Daniel
    Walker, Gilbert C.
    [J]. MACROMOLECULES, 2011, 44 (10) : 3901 - 3909
  • [9] Investigation of the effects of isotopic labeling, at a PS/PMMA interface using SIMS and mean-field theory
    Harton, SE
    Stevie, FA
    Ade, H
    [J]. MACROMOLECULES, 2006, 39 (04) : 1639 - 1645
  • [10] THE EFFECT OF SURFACE CONSTRAINTS ON THE ORDERING OF BLOCK COPOLYMER DOMAINS
    HENKEE, CS
    THOMAS, EL
    FETTERS, LJ
    [J]. JOURNAL OF MATERIALS SCIENCE, 1988, 23 (05) : 1685 - 1694