Salinity induced stiffening of drying particulate film and dynamic warping
Salinity induced stiffening of drying particulate film and dynamic warping
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盐度引起干燥颗粒膜的硬化和动态翘曲
DOI：
10.1103/physrevmaterials.7.025604
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发表时间：
2023
影响因子：
3.4
通讯作者：
and Sanjoy Khawas
中科院分区：
文献类型：
--
作者：
Hisay Lama;Ludovic Pauchard;Frederique Giorgiutti-Dauphine;and Sanjoy Khawas
当颗粒分散体干燥时，其组成成分巩固形成固体颗粒膜，导致从液体到固相的转变。由此产生的颗粒膜储存了在其形成过程中积累的应变能，并经常被释放以开裂和翘曲。在这里，我们研究了分散的离子强度对所得到的干燥颗粒膜的机械性能的依赖，以及它们在翘曲中的作用。我们表明，离子强度的增加导致其成分更快的固结，增加颗粒间的附着力，从而改变颗粒膜的杨氏模量并限制干燥引起的翘曲。我们使用理论模型解释了这一现象，其中我们表明，颗粒膜干燥过程中的差异收缩产生应变梯度，这后来导致翘曲。此外，我们的计算表明，弯曲区域的曲率与应变梯度成正比，与颗粒膜的杨氏模量成反比。
When the particle dispersion is dried, its constituents consolidate to form a solid particulate film, resulting in a transition from a liquid to a solid phase. The resultant particulate film stores the strain energy, which builds up during its formation and is often released to crack and warp. Here, we investigate the dependence of ionic strength of dispersion on the mechanical property of a resultant dried particulate film in conjunction with their role in warping. We show that the increasing ionic strength results in a faster consolidation of its constituents, increasing interparticle adhesion, thereby changing the particulate film's Young's modulus and limiting the drying induced warping. We explain this phenomenon using a theoretical model, wherein we show that the differential shrinkage during the drying in the particulate film generates the strain gradient, which later results in warping. Furthermore, our calculation shows that the curvature of a warped region is proportional to the strain gradient and is inversely proportional to the particulate film's Young's modulus.
DOI：
10.1098/rspa.1987.0089
发表时间：
1987
期刊：
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
影响因子：
--
作者：
K. Kendall;N. Alford;J. Birchall
通讯作者：
J. Birchall
干燥纳米颗粒悬浮液的分层
影响因子：
3.4
作者：
Arijit Sarkar;Mahesh S. Tirumkudulu
通讯作者：
Mahesh S. Tirumkudulu
自皱弹性体：纳米粒子悬浮液的干燥刺激引起的弯曲
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
F. Boulogne;H. Stone
通讯作者：
H. Stone