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首页> 外文期刊>Polymer: The International Journal for the Science and Technology of Polymers >The further understanding of chain topology effect on the properties of single polymer in good solvent: Special behaviors of single tadpole chain
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The further understanding of chain topology effect on the properties of single polymer in good solvent: Special behaviors of single tadpole chain

机译：链拓扑结构对良好溶剂中单一聚合物性能的影响的进一步理解：单t链的特殊行为

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摘要

Chain topology strongly affects the static and dynamic properties of polymer melts and polymers in dilute solution. For different chain architectures, such as ring and linear polymers, the molecular size and the diffusion behavior are different. To further understand the chain topology effect on the static and dynamic properties of polymers, we focus on the tadpole polymer which consists of a cyclic chain attached with one or more linear tails. It is found that both the number and the length of linear tails play important roles on the properties of the tadpole polymers in dilute solution. For the tadpole polymers with fixed linear tail length and number, with increasing the degree of polymerization of tadpole polymers, a transition from linear-like to ring-like behavior is observed for both the static and dynamic properties. By studying the radii of gyration for different chains, we define a ratio of the number of monomers in linear tails (N-tail) to the total degree of polymerization (N). and found that when the ratio N-tail/N is more than about 0.73, tadpole chains behave as linear chains, while, when N-tail/N is less than about 0.29, they behave as ring chains. This result will be helpful in further understanding of the chain topology dependence on the static and dynamic properties of polymer in dilute solution. Furthermore, the tadpole polymers behave as what Zimm theory expected before they deviate from the linear-like regime, or after they reach the ring-like regime, however, in the intermediate regime, the behavior of tadpole polymer does not show what Zimm model expected. (C) 2008 Elsevier Ltd. All rights reserved.
机译：链拓扑强烈影响聚合物熔体和稀溶液中聚合物的静态和动态特性。对于不同的链结构，例如环和线性聚合物，分子大小和扩散行为是不同的。为了进一步了解链拓扑结构对聚合物静态和动态性能的影响，我们重点研究the聚合物，它由带有一个或多个线性尾部的环状链组成。发现线性尾部的数量和长度对稀溶液中on聚合物的性能起重要作用。对于具有固定的线性尾部长度和数目的polymers聚合物，随着polymers聚合物的聚合度的增加，静态和动态性质均从线性行为过渡到环状行为。通过研究不同链的回转半径，我们定义了线性尾巴中的单体数量（N尾）与总聚合度（N）的比率。并且发现当N-tail / N之比大于约0.73时，t链表现为线性链，而当N-tail / N小于约0.29时，它们表现为环链。该结果将有助于进一步理解稀溶液中聚合物的静态和动态性质对链拓扑的依赖性。此外，the聚合物在偏离线性状态之前或到达环状状态后，其行为均符合Zimm理论的预期，但是，在中间状态下，of聚合物的行为并未显示Zimm模型的预期结果。 （C）2008 Elsevier Ltd.保留所有权利。

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