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Solvent-induced deflection of polydimethylsiloxane plates: Effects of dimensions and solvent volume.
The European Physical Journal E ( IF 1.8 ) Pub Date : 2020-08-04 , DOI: 10.1140/epje/i2020-11977-4
Wei Sun 1, 2 , Annaliza Perez-Torres 2 , Fuqian Yang 2
Affiliation  

Abstract.

The development of flexible electronics and robots has stimulated interest in the deformation behavior of polymers under liquid environments. In this work, we introduce a “local” method to study the toluene-induced deflection of polydimethylsiloxane (PDMS) plates. Placing a graphite rod on the surface of a PDMS plate, we are able to confine the spreading and evaporation of toluene and the uptake of toluene by the PDMS plate. The local uptake of toluene by a PDMS plate causes the deflection of the PDMS plate, which is dependent on the geometric dimensions of the plate and the toluene volume. An empirical relationship is proposed to correlate the largest deflection of a PDMS plate induced by local uptake of toluene to geometric dimensions of the plate and toluene volume. The approach used in this work provides a simple approach to study the kinetics of the solvent-induced deformation of a polymer, which can contribute to the design and applications of a stimuli-sensitive self-shaping polymer.

Graphical abstract



中文翻译:

溶剂引起的聚二甲基硅氧烷板的挠度:尺寸和溶剂体积的影响。

摘要。

柔性电子设备和机器人的发展激发了人们对液体环境下聚合物变形行为的兴趣。在这项工作中,我们介绍了一种“局部”方法来研究甲苯诱导的聚二甲基硅氧烷(PDMS)板的挠度。将石墨棒放置在PDMS板的表面上,我们能够限制甲苯的扩散和蒸发以及PDMS板对甲苯的吸收。PDMS板对甲苯的局部吸收会导致PDMS板的变形,这取决于板的几何尺寸和甲苯体积。提出了一种经验关系,以将局部吸收甲苯引起的PDMS板的最大挠度与板的几何尺寸和甲苯体积相关联。

图形概要

更新日期:2020-08-04
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