標題: Dewetting of polymer thin films on modified curved surfaces: preparation of polymer nanoparticles with asymmetric shapes by anodic aluminum oxide templates
作者: Liu, Chih-Ting
Tsai, Chia-Chan
Chu, Chien-Wei
Chi, Mu-Huan
Chung, Pei-Yun
Chen, Jiun-Tai
應用化學系
Department of Applied Chemistry
公開日期: 21-四月-2018
摘要: We study the dewetting behaviors of poly(methyl methacrylate) (PMMA) thin films coated in the cylindrical nanopores of anodic aluminum oxide (AAO) templates by thermal annealing. Self-assembled monolayers (SAMs) of n-octadecyltrichlorosilane (ODTS) are introduced to modify the pore surfaces of the AAO templates to induce the dewetting process. By using scanning electron microscopy (SEM), the dewetting-induced morphology transformation from the PMMA thin films to PMMA nanoparticles with asymmetric shapes can be observed. The sizes of the PMMA nanoparticles can be controlled by the original PMMA solution concentrations. The dewetting phenomena on the modified nanopores are explained by taking into account the excess intermolecular interaction free energy (AG). This work opens a new possibility for creating polymer nanoparticles with asymmetric shapes in confined geometries.
URI: http://dx.doi.org/10.1039/c8sm00318a
http://hdl.handle.net/11536/145169
ISSN: 1744-683X
DOI: 10.1039/c8sm00318a
期刊: SOFT MATTER
Volume: 14
起始頁: 2772
結束頁: 2776
顯示於類別:期刊論文