Department of Chemical Engineering and Materials Science, Chung-Ang University, 221, Heukseok-dong, Dongjak-gu, Seoul, 156-756, Republic of Korea.
Macromol Rapid Commun. 2019 Aug;40(15):e1900131. doi: 10.1002/marc.201900131. Epub 2019 May 28.
Engineering the surface properties of a material without affecting its bulk properties is desirable for many applications, but it is often not readily achievable because it requires a complex series of processing steps. This study presents for the first time a simple and straightforward method that can convert regular flat polymer surfaces into various porous composite surfaces. The controlled dissolution of the polymer surface by a dispersion and subsequent melt crystallization allows for the successful embedding of dispersed inorganic or organic particles in the pore walls. The porous surface morphology is not significantly affected by the type of dispersed particle, but the contact and sliding angles and surface wettability are. Both superhydrophobic and oil/water separation surfaces can be conveniently fabricated from flat polymer surfaces. This novel and versatile technique could provide engineering freedom for the future development of various functional materials.
在不影响材料本体性质的情况下对其表面性质进行工程设计，这在很多应用中都是非常理想的，但通常难以实现，因为这需要一系列复杂的加工步骤。本研究首次提出了一种简单直接的方法，可以将常规的平整聚合物表面转化为各种多孔复合材料表面。通过分散体的受控溶解以及随后的熔融结晶，可以将分散的无机或有机颗粒成功地嵌入到孔壁中。多孔表面形貌受分散颗粒类型的影响不大，但接触和滑动角以及表面润湿性会受影响。超疏水和油水分离表面都可以方便地由平整聚合物表面制备得到。这种新颖而通用的技术可能为未来各种功能材料的发展提供工程自由度。
