SOLVENT-INDUCED DEWETTING OF POLYMER THIN FILM

摘要

@@The dewetting of thin liquid films on a flat substrate is a common phenomenon with crucial impact on various technological processes, and is also important in its fundamental scientific interests. Understanding and controlling the mechanisms is greatly important, which lead to the instability of the thin film; however, there are still many questions and puzzles in the process of dewetting. 14 In addition, most studies focus on thermal dewetting but only several studies concern solventinduced dewetting.5-8 The usual process of the solvent-induced dewetting is similar to that of thermal dewetting. However, the solvent-induced dewetting has more freedom and convenience than thermal dewetting to alter the Hamaker constant and spreading coefficient of the polymer solution film on substrates by the choice of different solvents. The process of dewetting has been studied for many years, however, many questions and puzzles, such as the issue on the rim instability and dynamics of hole growth.