Dewetting Kinetics of Thin Polymer Films with Different Architectures:Effect of Polymer Adsorption

作     者：Li-Na Wang Huan-Huan Zhang Lin Xu Bin-Yuan Liu Tong-Fei Shi Shi-Chun Jiang Li-Jia An 

作者机构：School of Materials Science and EngineeringTianjin University State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Laboratory of Surface Physics and ChemistryGuizhou Education University Department of Polymer Science and EngineeringHebei University of Technology 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2018年第36卷第8期

页      面：984-990页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.51473168,21234007,21674114,51503048,51573131 and 21374077) the grant of Guizhou Education University (No.107003001455) the Natural Science Foundation of Guizhou Province (No.QKHJC1137) 

主　　题：Thin polymer film Star polystyrene Ring polystyrene Dewetting Adsorption 

摘      要：We have investigated the influence of the adsorption process on the dewetting behavior of the linear polystyrene film （LPS）, the 3-arm star polystyrene film （3SPS） and the ring polystyrene film （RPS） on the silanized Si substrate. Results show that the adsorption process greatly influences the dewetting behavior of the thin polymer films. On the silanized Si substrate, the 3SPS chains exhibit stronger adsorption compared with the LPS chains and RPS chains; as a result, the wetting layer forms more easily. For LPS films, with the decrease of annealing temperature, the kinetics of polymer film changes from exponential behavior to slip dewetting. As a comparison, the stability of 3SPS and RPS films switches from slip dewetting to unusual dewetting kinetic behavior. The adsorbed nanodroplets on the solid substrate play an important role in the dewetting kinetics by reducing the driving force of dewetting and increase the resistant force of dewetting. Additionally, Brownian dynamics （BD） simulation shows that the absolute values of adsorption energy （ε） gradually increase from linear polymer （-0.3896） to ring polymer （-0.4033） and to star polymer （-0.4264）, which is consistent with the results of our adsorption experiments.