Odijk Theo
Lorentz Institute for Theoretical Physics, Leiden University, 2333 CA Leiden, The Netherlands.
Polymers (Basel). 2017 May 26;9(6):190. doi: 10.3390/polym9060190.
A simple theory of the unfolding kinetics of a semi-flexible polymer chain is presented in terms of a Kramers type picture for the energy of elongation. The hydrodynamic interactions are discussed in terms of slender body theory. It turns out that the elongation of the chain is basically linear in time and independent of the viscosity. The former prediction agrees with experiments on the stretching dynamics of DNA under planar elongational flow. Nevertheless, the theory overestimates the experimental rate by a significant amount for reasons that are unclear.
本文依据克拉默斯型伸长能图景，提出了一种半柔性聚合物链展开动力学的简单理论。依据细长体理论讨论了流体动力学相互作用。结果表明，链的伸长在时间上基本呈线性，且与粘度无关。前一个预测与平面拉伸流作用下DNA拉伸动力学的实验结果相符。然而，由于尚不清楚的原因，该理论显著高估了实验速率。
