Non-equilibrium relaxation law for entangled polymers
Non-equilibrium relaxation law for entangled polymers
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DOI：
10.1209/epl/i1999-00529-8
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发表时间：
1999-12
期刊：
影响因子：
1.8
通讯作者：
G. Schütz
中科院分区：
文献类型：
--
作者：
G. Schütz
我们用一个精确可解的格子气体模型来研究初始拉伸的纠缠聚合物的远离平衡的驰豫。在一个重要的时间范围内，包括一个初始的普适定律体系，预测的管长度弛豫与DNA弛豫的实验数据非常一致。实验证据和理论论证表明，观察到的系统长期偏差是由于纠缠波动造成的。对格气模型的推广进行了分析，证实了这一观点，为进一步研究自转动力学奠定了可靠的基础。
We study the far-from-equilibrium relaxation of an initially stretched, entangled polymer by using an exactly solvable lattice gas model for reptation. Over a significant time range, including an initial universal power law regime, the predicted tube length relaxation is in very good agreement with experimental data for the relaxation of DNA. Experimental evidence and theoretical arguments suggest an observed systematic long-time deviation to be due to entanglement fluctuations. This view is confirmed by the analysis of an extension of the lattice gas model which appears to be a reliable foundation for further study of reptation dynamics.