首页> 外文期刊>The Journal of Chemical Physics >DYNAMIC SCATTERING FROM A HOMOPOLYMER AND A DIBLOCK COPOLYMER CHAIN IN DILUTE AND MANY-CHAIN SOLUTIONS
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DYNAMIC SCATTERING FROM A HOMOPOLYMER AND A DIBLOCK COPOLYMER CHAIN IN DILUTE AND MANY-CHAIN SOLUTIONS

机译:稀溶液和多链溶液中均聚物和二嵌段共聚物链的动态散射

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The intermediate dynamic light scattering function has been computed for a single A-B diblock copolymer chain in dilute and many-chain solutions, assuming a nonrefractive solvent (i.e., setting opposite contrast factors for the A and B units). Theoretical calculations, based in the Pecora scheme for the Rouse model, have been compared with the results obtained with a dynamic Monte Carlo algorithm for chains with nonoverlapping units placed in a cubic lattice. These numerical functions are also compared with the prediction of a single exponential described by the first cumulant method, which is consistent with the application of the linear response theory. The homopolymer case is also discussed. (C) 1996 American Institute of Physics. [References: 31]
机译:假设使用非折光溶剂(即为A和B单元设置相反的对比度系数),则在稀释和多链溶液中针对单个A-B双嵌段共聚物链计算了中间动态光散射函数。将基于Pecora方案的Rouse模型的理论计算与通过动态Monte Carlo算法获得的结果进行了比较,该算法用于将不重叠单元放置在立方晶格中的链。这些数值函数也与第一累积量方法描述的单个指数的预测相比较,这与线性响应理论的应用是一致的。还讨论了均聚物的情况。 (C)1996年美国物理研究所。 [参考:31]

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