Injection of a Self-propelled Polymer into a Small Circular Cavity  

作　　者：Chao Wang Yan-Li Zhou Xiao Yang Fan Wu Meng-Bo Luo 

机构地区：[1]Department of Physics,Taizhou University,Taizhou,318000,China [2]Department of Physics,Zhejiang University,Hangzhou,310027,China

出　　处：《Chinese Journal of Polymer Science》2024年第6期886-894,共9页高分子科学（英文版）

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(No.LY20A040004);by the National Natural Science Foundation of China(Nos.11604232 and 11974305).

摘　　要：The injection of a polymer chain into a small circular cavity under tangential self-propelled force is studied by using Langevin dynamics simulation.Results indicate that the injection dynamics of the active polymer shows strong correlation with the polymer conformation inside the cavity depending on the polymer rigidity(k_(b)).The injection timeτvaries nonmonotonously with increasing k_(b),and reaches its minimum at k_(b)^(*).When k_(b) is small(k_(b)≪k_(b)^(*)),the polymer is nearly random coil in the cavity,and spends a long time at the final stage of the injection process due to the large repulsion between monomers inside the cavity.When k_(b) is moderate(k_(b)∼k_(b)^(*)),the part of polymer inside the cavity forms spiral configuration under the tangential active force,and the whole polymer moves synchronously with a constant velocity during the injection process,leading to a small injection time.When k_(b) is large(k_(b)≫k_(b)^(*)),the polymer is nearly straight at the initial stage of the injection process,and takes a long time to bend itself,leading to a large injection time.

关 键 词：Active Polymer INJECTION DYNAMICS Simulation 

分 类 号：TQ317[化学工程—高聚物工业]