標題: Hierarchical Polymer Structures Using Templates and the Modified Breath Figure Method
作者: Lee, Lin-Ruei
Liu, Chih-Ting
Tseng, Hsiao-Fan
Lin, Kuan-Ting
Chu, Chien-Wei
Chen, Jiun-Tai
應用化學系
Department of Applied Chemistry
公開日期: 26-Jun-2018
摘要: Hierarchical structures are commonly observed in nature and possess unique properties. The fabrication of hierarchical structures with well-controlled sizes in different length scales, however, is still a great challenge. To further understand the morphologies and properties of the hierarchical structures, here we present a novel strategy to prepare hierarchical polymer structures by combining the modified breath figure method and the template method. Poly(methyl methacrylate) (PMMA) honeycomb films with regular micropores are first prepared using the modified breath figure method by dipping PMMA films into mixtures of chloroform and methanol. The polymer chains on the honeycomb films are then annealed and wetted into the nanopores of anodic aluminum oxide templates via capillary forces, resulting in the formation of hierarchical polymer structures. The morphologies of the polymer structures, which can be controlled by the molecular weights of the polymers and the concentrations of the polymer solutions, are characterized by scanning electron microscopy. The surface wettabilities of the polymer structures are also examined by water contact angle measurements, and the hierarchical structures are observed to be more hydrophobic than the flat films and honeycomb films. This work not only provides a feasible approach to fabricate hierarchical polymer structures with controlled sizes but also gives a better understanding of the relationship between surface morphologies and properties.
URI: http://dx.doi.org/10.1021/acs.langmuir.8b01381
http://hdl.handle.net/11536/145197
ISSN: 0743-7463
DOI: 10.1021/acs.langmuir.8b01381
期刊: LANGMUIR
Volume: 34
起始頁: 7472
結束頁: 7478
Appears in Collections:Articles