荷叶、水稻叶接触角随温度变化的实验研究  

An Experimental Study on Contact Angle Changes of Lotus Leaves and Rice leaves with Temperature Variation

作　　者：孙艳红[1] 张钰杉 杨卓娟[1] SUN Yan-hong ZHANG Yu-shan YANG Zhuo-juan(School of Mechanical Engineering at Jilin Engineering Normal University, Changchan Jilin 130052, China)

机构地区：[1]吉林工程技术师范学院机械工程学院,吉林长春130052

出　　处：《吉林工程技术师范学院学报》2017年第6期102-104,共3页Journal of Jilin Engineering Normal University

基　　金：国家自然科学基金项目(51275055);吉林省教育厅科学技术研究项目(2015386)

摘　　要：研究荷叶、水稻叶在不同温度蒸馏水浸泡后润湿性随温度变化规律。结果表明:实验条件下,浸泡后荷叶、水稻叶表面微观形貌无明显变化,而接触角随温度升高而降低,大约在68℃左右,润湿性发生较大变化。其原因是随着温度升高,水的表面张力与叶片表面能之差越来越小,水滴在叶表收缩作用减弱,无法形成完美的球形,甚至铺展成薄膜状,从而使荷叶、水稻叶疏水性变差甚至转变为亲水性。The paper presented a research on the rules of the changes of wettability of lotus and rice leaves having been soaked in distilled water with temperature variation. The result shows that surface microscopic appearance of these leaves after being soaked does not change obviously under experimental conditions but their contact angles will lower when the temperature rises. At about 68°c,their wetability will change a lot because they will decrease in hydrophobicity or even turn to hydrophilic since water drops fail to shrink and form perfect spheres or even stretch like a film because of the increasingly smaller difference between surface tension and surface energy when temperature rises.

关 键 词：润湿性 荷叶 水稻叶 温度 

分 类 号：TB17[生物学—生物工程]