摘要
利用模板赋形和表面修饰方法,制备了具有磁响应性的聚二甲基硅氧烷(PDMS)柱状阵列(SMPA).该柱状阵列具有超疏水及低黏附特性,在外加磁场作用下表现出可逆弯曲形变,且弯曲程度随外加磁场强度和柱状阵列中磁性粒子含量的增加而增大.在磁场作用下,柱状阵列弯曲能够挤压结构内的水滴,迫使其从表面跳离.研究结果表明,当柱状阵列表面尺寸一致时,与静态结构相比,磁响应动态结构可以实现更小水滴在表面的去除.同时,水滴离开的方向和体积与柱状阵列的结构参数和弯曲角度紧密相关.基于磁场作用,水滴跳离的体积大小和方向可以实现智能调控.
In this paper,superhydrophobic low-adhesive magnetically responsive polydimethylsiloxane(PDMS)columnar arrays(SMPA)were prepared by combination of template method and surface modification.The columnar arrays can undergo reversible bending deformation under the action of the magnetic field,and the degree of bending will increase with the increase of the strength of the applied magnetic field and the increase of the content of magnetic particles in the columnar arrays.The findings indicate that,when the surface area of the columnar arrays remains constant,the dynamic magnetic response structure exhibits enhanced capability in removing smaller water droplets from the surface compared to its static counterpart,and droplets departure direction and volume are closely related to the structural parameters and bending angle of the columnar arrays.Based on the magnetic field,smart control of droplets jumping in both departing direction and droplets volume can be achieved.
作者
田永图
张洋
李泓颉
来华
成中军
TIAN Yongtu;ZHANG Yang;LI Hongjie;LAI Hua;CHENG Zhongjun(School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2024年第9期140-147,共8页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:22075061)资助.
关键词
超疏水
聚二甲基硅氧烷柱状阵列
磁响应
水滴跳离
Superhydrophobicity
Polydimethylsiloxane columnar arrays
Magnetic responsiveness
Droplets jumping
