有機/無機奈米混層材料製備具超疏水表面之阻氣基板

Fabrication of Gas-Blocking Layer with Superhydrophobic Surface from Organic-Inorganic Nanohybrid Composite Materials

魏宏格(Hung-Ke Wei) ； 劉昭廷(Jau-Ting Liu) ； 李玉郎(Yuh-Lang Lee)

《界面科學會誌》 31卷1~4期 (2009/08) Pp. 17-25

https://doi.org/10.30020/JCCIS.200908.0003

摘要

本研究旨在常溫非真空的環境下製備一具氣體阻障與超疏水表面的軟性薄膜，在氣體阻障的部份利用環氧樹脂與改質後的蒙托土（Montmorillonite clay）混層材料，利用重力壓膜法及液相沉積法來製備薄膜，利用掃描式電子顯微鏡（SEM）、表面粗度儀（Alpha-step Profilometer）、X-光繞射光譜儀（XRD）、氣體滲透分析儀（Gas permeability analyzer）來分析蒙托土改質及薄膜厚度和氣體通透率。超疏水表面的部份則是使用靜電逐層組裝技術（ELBL），在氣體阻障基板上組裝微米級結構的二氧化矽粒子薄膜，再以液相沉積法（LPD）披覆上奈米級的二氧化矽粒子，製備出結構類似於Raspberry的階層式粒子薄膜，最後藉由長碳鏈矽烷作疏水化表面改質，得到超疏水性粒子薄膜。利用掃描式電子顯微鏡（Scanning electron microscope, SEM）及接觸角分析儀（Dynamic Contact Angle, DCA），來瞭解薄膜表面型態及潤濕性。結果顯示：利用添加10 wt%蒙托土/環氧樹脂混層材料做為阻障層搭配靜電組裝技術所得到不規則的Raspberry-like的微/奈階層式粒子，可得到阻氧效率達94.4%，薄膜表面的靜態接觸角157°，傾斜角少於8.76°的阻氧超疏水性粒子薄膜。

關鍵字

液相沉積法 ； 有機-無機奈米混層材料 ； 氣體阻障層 ； 軟性基板 ； 靜電作用力 ； 二氧化矽粒子 ； 超疏水表面

並列摘要

This study aims at fabricating flexible films with gas-blocking ability and superhydrophobic property by solution processes performed in atmospheric environment and room temperatures. Composite materials composing epoxy and modified montmorillonite clay (MMT) are used to prepare the gas-blocking films by force compression method. On top of the gas-blocking films, a micro/nano dual-scale particulate film with raspberry-like morphology was deposited using liquid phase deposition (LPD) and electrostatic layer-by-layer (ELBL) technique. These particulate films were then surface-modified by alkylsilane to render a surface with surperhydrophobic property. Various equipment including scanning electron microscopy (SEM), alpha-step profilemeter, X-ray diffraction (XRD), dynamic contact angle analyzer, and gas permeability analyzer are used to characterize the films. The results show that, by introduction 10 wt% MMT in the epoxy, the prepared films can decrease 94.4% of oxygen permeation comparing with the PET substrate. After hydrophobilization, the static contact angles of water on the gas-blocking film can attain a value as high as 157°, with a sliding angle of 8.76°.

並列關鍵字

liquid phase deposition ； gas blocking film ； flexible substrate ； electrostatic interaction ； surperhydrophobic surface ； dual-size structured