Mesoscopic simulation of the crossing dynamics at an entanglement point of surfactant threadlike micelles

被引:54
|
作者
Yamamoto, S [1 ]
Hyodo, S [1 ]
机构
[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan
来源
JOURNAL OF CHEMICAL PHYSICS | 2005年 / 122卷 / 20期
关键词
D O I
10.1063/1.1914767
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The crossing dynamics at an entanglement point of surfactant threadlike micelles in an aqueous solution was studied using a mesoscopic simulation method, dissipative particle dynamics, with a coarse-grained surfactant model. The possibility of a phantom crossing, which is the relaxation mechanism for the pronounced viscoelastic behavior of surfactant threadlike micellar solution, was investigated. When two threadlike micelles were encountered at an entanglement point under the condition close to thermal equilibrium, they fused to form a four-armed branch point. Then, a phantom crossing reaction occurred occasionally, or one micelle was cut down at the branch point. Increasing the repulsive forces between hydrophilic parts of the surfactants, fusion occurred less and the threadlike micelle was frequently broken down at an entanglement point. In these three schemes (a phantom crossing cut down at the branch point, and break down at the entanglement point), the breakage occurs at somewhere along the threadlike micelle. The breakage is considered as an essential process in the relaxation mechanism, and a phantom crossing can be seen as a special case of these processes. To explain the experimental evidence that a terminal of threadlike micelles is scarcely observed, a mechanism was also proposed where the generated terminal merges into the connected micelle part between two entanglement points due to the thermal motion.
引用
收藏
页数:8
相关论文
共 50 条
  • [1] Dynamics of branched threadlike micelles
    In, M
    Warr, GG
    Zana, R
    PHYSICAL REVIEW LETTERS, 1999, 83 (11) : 2278 - 2281
  • [2] Molecular dynamics simulation of spherical-to -threadlike micelle transition in a cationic surfactant solution
    Yan, Hui
    Wang, Yue
    Zhang, Luge
    Li, Guangyong
    Wei, Xilian
    Liu, Chongfeng
    MOLECULAR SIMULATION, 2019, 45 (10) : 797 - 805
  • [3] Mesoscopic fluctuations in entanglement dynamics
    Lim, Lih-King
    Lou, Cunzhong
    Tian, Chushun
    NATURE COMMUNICATIONS, 2024, 15 (01)
  • [4] Photoinduced formation of threadlike micelles from mixtures of a cationic surfactant and a stilbene amphiphile
    Takahashi, Yutaka
    Kishimoto, Mai
    Kondo, Yukishige
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2016, 470 : 250 - 256
  • [5] On the formation of discoidal versus threadlike micelles in dilute aqueous surfactant/lipid systems
    Johansson, Emma
    Sandstrom, Maria C.
    Bergstrom, Magnus
    Edwards, Katarina
    LANGMUIR, 2008, 24 (05) : 1731 - 1739
  • [6] The mesoscopic simulation on the structues of the surfactant solution using dissipative particle dynamics
    Kim, Ki Young
    Byun, Ki Taek
    Kwak, Ho-Young
    Proceedings of the ASME Fluids Engineering Division, 2005, 261 : 139 - 144
  • [7] Microscopic and mesoscopic simulation of entropic micelles
    FOM Inst for Atomic and Molecular, Physics, Amsterdam, Netherlands
    Phys A Stat Theor Phys, 1-4 (45-58):
  • [8] Microscopic and mesoscopic simulation of entropic micelles
    Bolhuis, PG
    Frenkel, D
    PHYSICA A, 1997, 244 (1-4): : 45 - 58
  • [9] Mesoscopic simulation of self-assembly in surfactant oligomers by dissipative particle dynamics
    Wu, Hao
    Xu, Junbo
    He, Xianfeng
    Zhao, Yuehong
    Wen, Hao
    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2006, 290 (1-3) : 239 - 246
  • [10] Open dynamics of entanglement in mesoscopic bosonic systems
    Schlichtholz, Konrad
    Rudnicki, Lukasz
    NEW JOURNAL OF PHYSICS, 2024, 26 (05):