物理化学学报 >> 1993, Vol. 9 >> Issue (05): 617-621.doi: 10.3866/PKU.WHXB19930509

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混合高聚物分相过程标度、分形与Monte Carlo模拟

宋默; 丁恩勇; 金杰; 许丽华   

  1. 中国科学院广州化学研究所，广州 510650；沈阳工业学院，沈阳 110057
  • 收稿日期:1992-03-07 修回日期:1992-08-24 发布日期:1993-10-15
  • 通讯作者: 宋默

Scaling Behaviour, Fractals and Monte Carlo Simulation of Spinodal Decomposition in Polymer Blends

Song Mo; Ding En-Yong; Jin Jie; Xu Li-Hua   

  1. Guangzhou Institute of Chemistry, Guangzhou 510650; Shenyang Industry College, Shenyang 110057
  • Received:1992-03-07 Revised:1992-08-24 Published:1993-10-15
  • Contact: Song Mo

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摘要： 基于光散射、Monte Carlo模拟标度理论和分形(Fractal)概念研究和分析了高分子混合体系不稳相分离过程结构函数的标度行为和成因, 结果表明相分离的形态是一种分形结构, 其分形维数不随时间变化. 结构函数的标度行为起源于相态的分形结构. 相态的分形结构是不稳相分离特征之一.

关键词: 标度, 分形, Monte Carlo模拟, 高分子共混, 相分离

Abstract: The process of spinodal decomposition in polymer blends has been investigated by elastic light scattering, image analysis, computer simulation, scaling and fractal concepts. The results show that there exists the scaling behaviour for structure function. The morphology of phase separation in polymer blends is a fractal structure. The fractal dimension nearly does not change with time. Fractal aggregation takes place in the process of phase separation, The fractal structure of the morphology of phase separation results in dynamical scaling of structure function.

Key words: Scaling, Fractals, Light scattering, Polymer blends, Phase separation