A simple model for the anomalous intrinsic viscosity of dendrimers

A simple model for the anomalous intrinsic viscosity of dendrimers
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DOI:
10.1039/c0sm00061b
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发表时间:
2010-06
期刊:
影响因子:
3.4
通讯作者:
Yuyuan Lu;Shi Tongfei;L. An;Li Jin;Zhen‐Gang Wang
Yuyuan Lu;Shi Tongfei;L. An;Li Jin;Zhen‐Gang Wang
中科院分区:
化学2区
文献类型:
--
作者:
Yuyuan Lu;Shi Tongfei;L. An;Li Jin;Zhen‐Gang Wang

文献摘要

相似文献

树枝状大分子在溶液中的特性粘度表现出几种反常行为,到目前为止,这些行为在现有的Zimm或Rouse的理论框架内都无法解释。本文基于树枝状大分子的径向链段密度分布,提出了一个简单的两区模型,并将无排出核和自由排出的外部区域描述相结合,得到了一个简单的公式,该公式能够反映实验获得的特性粘度数据中的大部分主要特征。
The intrinsic viscosity of dendrimers in solution shows several anomalous behaviors that have hitherto not been explained within the existing theoretical frameworks of either Zimm or Rouse. Here we propose a simple two-zone model based on the radial segmental density profile of the dendrimers and combine a non-draining core with a free-draining outer region description, to arrive at a simple formula that captures most of the main features in the intrinsic viscosity data obtained in experiments.