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首页> 外文期刊>The European physical journal, E. Soft matter >Fracture of a biopolymer gel as a viscoplastic disentanglement process
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Fracture of a biopolymer gel as a viscoplastic disentanglement process

机译:生物聚合物凝胶的断裂是粘塑性解缠过程

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摘要

We present an extensive experimental study of mode-I, steady, slow crack dynamics in gelatin gels. Taking advantage of the sensitivity of the elastic stiffness to gel composition and history we confirm and extend the model for fracture of physical hydrogels which we proposed in a previous paper (Nature Mater. 5, 552 (2006)), which attributes decohesion to the viscoplastic pull-out of the network-constituting chains. So, we propose that, in contrast with chemically cross-linked ones, reversible gels fracture without chain scission.
机译:我们目前在明胶中对I型,稳定,缓慢的裂纹动力学进行广泛的实验研究。利用弹性刚度对凝胶成分和历史的敏感性,我们确认并扩展了我们在之前的论文(Nature Mater。5,552(2006))中提出的物理水凝胶断裂的模型,该模型将脱粘力归因于粘塑性退出网络构成链。因此,我们建议,与化学交联的相比,可逆凝胶破裂而没有断链。

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