标题： 可逆交联生物聚合物网络的线性流变学 显示英文标题

标题： Linear rheology of reversibly cross-linked biopolymer networks

摘要： 我们提出一个简单的模型来描述可逆的交联、结合和解离到半柔性聚合物网络中。 通过布朗动力学模拟计算了网络在施加剪切力下的频率依赖响应。 结果显示其相当复杂，交联体的时间尺度与网络的激发时间尺度相互竞争。 如果交联体的寿命是最长的时间尺度，这在大多数生物网络中确实如此，那么损耗模量会出现明显的低频峰。 储存模量则会从其平台值开始相应衰减，对于不可逆的交联体，这种衰减一直延伸到静态极限。 这种额外的弛豫机制可以通过可逆和不可逆交联体的相对权重进行控制。 显示英文摘要

摘要： We suggest a simple model for reversible cross-links, binding and unbinding to/from a network of semiflexible polymers. The resulting frequency dependent response of the network to an applied shear is calculated via Brownian dynamics simulations. It is shown to be rather complex with the timescale of the linkers competing with the excitations of the network. If the lifetime of the linkers is the longest timescale, as is indeed the case in most biological networks, then a distinct low frequency peak of the loss modulus develops. The storage modulus shows a corresponding decay from its plateau value, which for irreversible cross-linkers extends all the way to the static limit. This additional relaxation mechanism can be controlled by the relative weight of reversible and irreversible linkers.