粘液
耗散颗粒动力学模拟
果胶
粘附
胶粘剂
基质(水族馆)
聚合物
化学
化学工程
材料科学
纳米技术
复合材料
植物
食品科学
工程类
生物
海洋学
图层(电子)
地质学
作者
Kamonthira Wichai,Helen Gorges,Stanislav N. Gorb,Florian Müller‐Plathe
出处
期刊:Langmuir
[American Chemical Society]
日期:2024-12-04
标识
DOI:10.1021/acs.langmuir.4c03962
摘要
We investigate the adhesion of pectin-mucilage-coated seeds to substrate surfaces, focusing on the effect of water content. It is known that the adhesion of pectin mucilage increases with water loss, eventually dropping to zero beyond a certain point. To explore this phenomenon, we develop and parametrize a coarse-grained many-body dissipative-particle dynamics (MDPD) model. First, we examine the adhesion of water between two flat surfaces to understand the factors influencing the pull-off force. Then, we determine the pull-off force of polymer solutions with varying pectin concentrations. Our findings show that the pull-off force increases as the pectin content rises and as water is lost. This is because more pectin becomes available to interact with the substrate surface, enhancing adhesive strength. Additionally, the concentration-driven transition of the polymer from a melt state to a glassy state must be considered, as it significantly affects the pull-off force.
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