标题： 长丝束形成、相分离和凝胶化中交联的作用 显示英文标题

标题： Role of cross-links in bundle formation, phase separation and gelation of long filaments

摘要： 我们预测长交联丝状物溶液的热力学和结构行为。 我们发现，在平均场水平上，自组装节点的熵会引发丝状物之间的有效吸引力，这可能导致相分离成一个连接的网络，并与稀释相处于平衡状态。 在链长度增加、交联密度增加或温度降低的情况下，也可以通过非热力学转变形成一个连接的网络。 对于刚性棒状物，在低温下，我们预测从各向同性的网络到由交联紧密结合的各向异性束的转变，这种转变是由棒状物之间交联分布的构型熵与棒状物的旋转和平动熵之间的相互作用所触发的。 显示英文摘要

摘要： We predict the thermodynamic and structural behavior of solutions of long cross-linked filaments. We find that at the mean field level, the entropy of self-assembled junctions induces an effective attraction between the filaments that can result in a phase separation into a connected network, in equilibrium with a dilute phase. A connected network can also be formed in a non-thermodynamic transition upon increase of the chain, or cross link density, or with decreasing temperature. For rigid rods, at low temperatures, we predict a transition from an isotropic network, to anisotropic bundles of rods tightly bound by cross links, that is triggered by the interplay between the configurational entropy of the cross-link distribution among the rods, and the rotational and translational entropy of the rods.