Experimental characterization of elastocapillary and osmocapillary effects on multi-scale gel surface topography

Zhu, Jie1; Yang, Canhui2; Liu, Qihan1

2023-11-22

10.1039/d3sm01147j

SOFT MATTER   影响因子和分区

1744-683X

1744-6848

["Surface topography significantly affects various surface properties of polymer gels. Unlike conventional materials where surface topography is largely a geometric property, the surface topography of a polymer gel is governed by the competition between capillary, elastic, and osmotic effects, which leads to complex stimuli-responsive effects. Elastocapillary deformation and osmocapillary phase separation are two phenomena that are known to flatten gel surface topography. Here we experimentally quantify how osmocapillary phase separation affects gel surface topography by fabricating ionogels with multi-scale topography and characterizing the swelling-dependent surface flattening. Our observation confirms the vital role of the osmocapillary length in governing the surface behavior of swollen ionogels. This study provides the first quantitative experimental verification of the osmocapillary phase separation and shows the insufficiency of the previous studies based on elastocapillary deformation alone.","Osmocapillary phase separation can pull solvent out from a gel surface and lead to length-dependent surface flattening. The osmocapillary flattening can be orders of magnitude larger than the existing studies of elastocapillary flattening."]

SCI ; EI

英语

通讯

C. Y. acknowledges the support of the Natural Science Foundation of Guangdong Province (2022A1515010601) and Shenzhen Science, Technology and Innovation Commission (JCYJ20220530114810024). The authors thank Prof. Weiwei Deng at Southern University of Scien[2022A1515010601] ; Natural Science Foundation of Guangdong Province[JCYJ20220530114810024]

Chemistry ; Materials Science ; Physics ; Polymer Science

Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science

WOS:001096886200001

ROYAL SOC CHEMISTRY

20234715073344

Functional polymers ; Phase separation ; Swelling ; Topography

Thermodynamics:641.1 ; Chemical Operations:802.3 ; Polymeric Materials:815.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

Web of Science

1.Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15213 USA
2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen Key Lab Soft Mech & Smart Mfg, Shenzhen 518055, Guangdong, Peoples R China

Zhu, Jie,Yang, Canhui,Liu, Qihan. Experimental characterization of elastocapillary and osmocapillary effects on multi-scale gel surface topography[J]. SOFT MATTER,2023,19(45):8698-8705.

Zhu, Jie,Yang, Canhui,&Liu, Qihan.(2023).Experimental characterization of elastocapillary and osmocapillary effects on multi-scale gel surface topography.SOFT MATTER,19(45),8698-8705.

Zhu, Jie,et al."Experimental characterization of elastocapillary and osmocapillary effects on multi-scale gel surface topography".SOFT MATTER 19.45(2023):8698-8705.