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arXiv 0802.3970cond-mat.softcond-mat.mtrl-sci
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半柔性Polymer网络的瞬态绑定与耗散

Transient Binding and Dissipation in Semi-flexible Polymer Networks

O. Lieleg, M. M. A. E. Claessens, Y. Luan, A. R. Bausch

摘要:

虽然聚合物溶液缺乏机械稳定性,但只有瞬时交联的网络才能满足结构稳定性和最大能量耗散的竞争要求。在这里,我们表明,瞬态交联带来局部应力松弛和能量耗散在中间弹性为主的频率制度。我们量化的半柔性聚合物网络的机械响应,通过实验调整的瞬时交联剂分子的解离速率和理论上重现测得的频率响应的模型,是预测微观解约束事件。

英文摘要:

While polymer solutions lack the mechanical stability only transiently cross-linked networks can fulfill the competing requirements of structural stability and maximal energy dissipation. Here, we show that transient cross-links entail local stress relaxation and energy dissipation in an intermediate elasticity dominated frequency regime. We quantify the mechanical response of a semi-flexible polymer network by experimentally tuning the off-rate of the transient cross-linker molecule and theoretically reproduce the measured frequency response by a model that is predicated on microscopic unbinding events.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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