Adhesion of a tape loop
Adhesion of a tape loop
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胶带环的粘合力
DOI：
10.1039/d0sm01516d
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发表时间：
2020
期刊：
影响因子：
3.4
通讯作者：
Croll, Andrew B.
中科院分区：
文献类型：
--
作者：
Elder, Theresa;Twohig, Timothy;Singh, Harmeet;Croll, Andrew B.
在这项工作中，我们重新实验和理论上的磁带循环的力学。主要使用弹性材料（聚二甲基硅氧烷，PDMS，或聚碳酸酯，PC）和共聚焦显微镜，我们监测的形状以及施加的力在整个周期的压缩和收缩的半环压缩平行玻璃板之间。我们观察到在循环过程中膜形状的明显差异;在压缩或回缩时，施加的力相等或板分离相等的点的形状不同。为了对粘附循环进行整体建模，我们采用了[T. J. W.瓦格纳等人，Soft Matter，2013，9，1025-1030]，其允许对力平衡和膜形状的完整分析描述。我们表明，在压缩下的系统一般是不敏感的界面相互作用，而在限制的限制平行板在收缩过程中的大分离的系统是很好地描述了剥离模型。最终，我们将这种理解应用于与玻璃接触的宽范围的不同交联剂比率的PDMS弹性体半环的能量释放速率的测量。最后，我们将展示该模型如何阐明一种非常简单的粘附力测量技术，该技术只需要一把尺子即可执行。
In this work, we revisit experimentally and theoretically the mechanics of a tape loop. Using primarily elastic materials (polydimethylsiloxane, PDMS, or polycarbonate, PC) and confocal microscopy, we monitor the shape as well as the applied forces during an entire cycle of compression and retraction of a half-loop compressed between parallel glass plates. We observe distinct differences in film shape during the cycle; points of equal applied force or equal plate separation differ in shape upon compression or retraction. To model the adhesion cycle in its entirety, we adapt the ‘Sticky Elastica’ of [T. J. W. Wagner et al., Soft Matter, 2013, 9, 1025–1030] to the tape loop geometry, which allows a complete analytical description of both the force balance and the film shape. We show that under compression the system is generally not sensitive to interfacial interactions, whereas in the limit of large separation of the confining parallel plates during retraction the system is well described by the peel model. Ultimately, we apply this understanding to the measurement of the energy release rate of a wide range of different cross-linker ratio PDMS elastomer half-loops in contact with glass. Finally, we show how the model illuminates an incredibly simple adhesion measurement technique, which only requires a ruler to perform.