| dc.contributor | 應物所 | en_US |
| dc.creator (作者) | 林瑜琤 | zh_TW |
| dc.creator (作者) | Lin, Yu-Cheng | en_US |
| dc.date (日期) | 2005.03 | en_US |
| dc.date.accessioned | 6-May-2014 11:31:19 (UTC+8) | - |
| dc.date.available | 6-May-2014 11:31:19 (UTC+8) | - |
| dc.date.issued (上傳時間) | 6-May-2014 11:31:19 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/65818 | - |
| dc.description.abstract (摘要) | The wetting behavior of a liquid polymer on top of a supported glassy polymer film is investigated with real (optical microscopy, phase measuring interference microscopy, and scanning force microscopy) and reciprocal space analysis techniques (X-ray reflectivity and grazing incidence small-angle X-ray scattering). The thermodynamic stability of the top film is determined by the interface potential that results from an interplay between short-range and long-range van der Waals contributions. It comprises two competing minima which correspond to a film of vanishingly small, microscopic thickness and to a film with a larger, mesoscopical thickness of a few nanometers. At high temperatures, the liquid top-layer forms drops sitting on top of this mesoscopically thin film. The short-range contribution influences the equilibrium state, and the long-range part of the interface potential determines the kinetics of dewetting. By varying the thickness of the glassy, polymeric sublayer, the effective interface potential is tuned, and a dewetting of the top layer is observed. Additionally, we find the kinetics of hole growth to be compatible with a reduction of the PA sublayer viscosity compared to the bulk. | en_US |
| dc.format.extent | 128 bytes | - |
| dc.format.mimetype | text/html | - |
| dc.language.iso | en_US | - |
| dc.relation (關聯) | Macromolecules, 38(8), 3406-3413 | en_US |
| dc.title (題名) | Stability-instability transition by tuning the effective interface potential in polymeric bilayer films | en_US |
| dc.type (資料類型) | article | en |
| dc.identifier.doi (DOI) | 10.1021/ma047602d | en_US |
| dc.doi.uri (DOI) | http://dx.doi.org/10.1021/ma047602d | en_US |
