水中颗粒-颗粒和颗粒-气泡间引力的分子动力学仿真

发布时间：2018-09-18 20:24

【摘要】：通过分子动力学模拟的方法建立了疏水颗粒之间、疏水颗粒与气泡之间相互作用的模型,阐明了疏水表面间和疏水表面与气泡间纳米气泡桥的形成和消失过程,并定量计算了纳米气泡桥的作用距离和作用力大小。结果表明:溶解在水中的气体会在疏水表面吸附,当疏水颗粒彼此靠近到一定程度时,吸附在它们表面上的气体会相互连通形成纳米气泡桥;同样,当疏水颗粒和气泡接近到一定程度时,吸附在疏水颗粒表面的气体也会与气泡内的气体相互连通形成纳米气泡桥,纳米气泡桥是它们之间引力的根源。
[Abstract]:A model of interaction between hydrophobic particles, hydrophobic particles and bubbles was established by molecular dynamics simulation. The formation and disappearance of nano-bubble bridges between hydrophobic surfaces and bubbles were described. The action distance and force of nanometer bubble bridge were calculated quantitatively. The results show that the gases dissolved in water are adsorbed on the hydrophobic surface, and when the hydrophobic particles are close to each other to a certain extent, the gas adsorbed on their surface will be connected to each other to form a nano-bubble bridge. When the hydrophobic particles and bubbles are close to a certain extent, the gas adsorbed on the surface of the hydrophobic particles will also connect with the gas in the bubble to form a nano-bubble bridge, which is the root of their gravity.
【作者单位】： 太原理工大学新型传感器与智能控制教育部与山西重点实验室;
【基金】：国家自然科学基金(21376161) 山西省科技攻关项目(20120321004-03)
【分类号】：O56
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本文编号：2249015