Suppressed Surface Reorganization in a High-Density Poly(methyl methacrylate) Brush

Biao Zuo, Quanyin Xu, Tiancheng Jin, Huimin Xing, Jiacheng Shi, Zhiwei Hao, Li Zhang, Keiji Tanaka, Xinping Wang

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    A high-density poly(methyl methacrylate) (PMMA) brush (σ = 0.77 chain/nm2) with a lower molecular weight distribution was prepared onto a silicon wafer by surface-initiated atom transfer radical polymerization. The surface of the PMMA brush chains was characterized upon the process of the environmental change, from air to water, using contact angle measurements in conjunction with sum-frequency generation spectroscopy. The surface structure and properties altered less with the changing environment from air to water for the PMMA brush than for a spin-coated film; that is, the extent of surface reorganization could be suppressed by grafting densely-packed chains onto a substrate. Also, the water penetration into the brush surface was inhibited because of the densely packed chain structure.

    Original languageEnglish
    Pages (from-to)14890-14895
    Number of pages6
    JournalLangmuir
    Volume35
    Issue number46
    DOIs
    Publication statusPublished - Nov 19 2019

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Spectroscopy
    • Electrochemistry

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