材料科学
粘附
大气压等离子体
聚合物
聚碳酸酯
聚甲基丙烯酸甲酯
涂层
化学工程
甲基丙烯酸甲酯
等离子体
表面能
基质(水族馆)
复合材料
图层(电子)
聚合
物理
地质学
工程类
海洋学
量子力学
作者
Lele Cui,Alpana N. Ranade,Marvi A. Matos,Géraud Dubois,Reinhold H. Dauskardt
摘要
Oxygen atmospheric plasma was used to pretreat polycarbonate (PC) and stretched poly(methyl methacrylate) (PMMA) surfaces in order to enhance the adhesion of the dense silica coatings deposited by atmospheric plasma on the polymer substrates. The treatment time and chemical structure of the polymers were found to be important factors. For PC, a short treatment increased the adhesion energy, while longer treatment times decreased the adhesion. In contrast, plasma pretreatment monotonically decreased the adhesion of PMMA, and pristine PMMA exhibited much higher adhesion than the PC counterpart. We found that adhesion enhancement was achieved through improved chemical bonding, chain interdiffusion, and mechanical interlocking at the coating/substrate interface, after a short atmospheric plasma treatment. Decreased adhesion resulted from overoxidation and low-molecular-weight weak layer formation on the polymer surface by prolonged atmospheric plasma treatment. The dramatic differences in the behavior of PC and PMMA in relation to the plasma treatment time were due to their dissimilar resistance to atmospheric plasma exposure.
科研通智能强力驱动
Strongly Powered by AbleSci AI