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研究生： 張鈞泓
Jun-Hong Chang
論文名稱： 對稱型聚（苯乙烯-b-甲基丙烯酸甲酯）與聚苯乙烯雙成分混摻之熱退火薄膜形態轉變探討
指導教授： 孫亞賢
Ya-Sen Sun
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程與材料工程學系
Department of Chemical & Materials Engineering
論文出版年： 2020
畢業學年度： 108
語文別： 中文
論文頁數： 99
中文關鍵詞： 高分子自組裝 、熱退火 、型態轉變
外文關鍵詞： ps-b-pmma
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    • 對稱型嵌段高分子聚(苯乙烯-b-甲基丙烯酸甲酯)與均聚物聚苯乙烯之雙成份混摻薄膜分別錨定在經表面改質之中性基材與選擇性基材上，將其進行熱退火，自組裝後之結構形態利用原子力顯微鏡(AFM)與低掠角式小角度散射儀(GISAXS)深入分析探討。我們發現在弱偏析分離強度區域(Weak segregation strength regime)，不同的均聚物混摻比例下得到許多種奈米微結構，例如: 穿孔層(Perforated Layer)、雙連續螺旋相(Bicontinuous- Double Gyroid) 、體心立方堆積(Body-centered cubic)等特殊結構，且觀察到在薄膜均聚物混摻系統中相變化之現象受到不同的混摻組成、分子量大小和不同厚度的影響。

    Thin film nanostructures of binary mixtures of (polystyrene-block-polymethyl methacrylate) (PS-b-PMMA) diblock copolymer and homopolymer polystyrene supported on a neutral or selective substrate were investigated. Effects of compositions and molecular weights of added PS in the mixtures on the morphology of self-assembly in thin films were studied by grazing-incidence small-angle X-ray scattering (GISAXS) and atomic force microscopy (AFM). In the weak segregation strength region, several unique morphologies, such as body-centered-cubic (BCC) packed, perforated layers and gyroids, were obtained. The unique morphologies were found to strongly depend on blending compositions and film thickness.

    目錄 摘要 i Abstract ii 致謝 iii 目錄 vi 圖目錄 ix 表目錄 xiv 第1章 簡介 1 1-1 嵌段共聚物 1 1-1-1 雙嵌段共聚物之自組裝行為 1 1-1-2 薄膜系統之微觀相分離 5 1-1-3 薄膜表面與介面間之作用力 6 1-1-4 空間侷限效應與膜厚相稱性 10 1-2 控制奈米結構排列之方向性 13 1-2-1 表面改質-化學接枝法 13 1-2-2 表面改質-石墨烯法 15 1-2-3 表面改質-光化學交聯法 17 1-3 嵌段共聚物之混摻 20 1-3-1 Wet Brush (uniform solubilization) 23 1-3-2 Dry Brush (localized solubilization) 25 1-3-3 Macrophase separation 25 1-4 研究背景與動機 26 第2章 實驗 28 2-1 實驗材料 28 2-1-1 高分子材料 28 2-1-2 溶劑 29 2-1-3 基材 29 2-2 實驗儀器 30 2-3 實驗製備與設計 31 2-3-1 矽晶圓基材 31 2-3-2 聚苯乙烯表面改質薄膜製備 31 2-3-3 紫外光曝曬進行聚苯乙烯薄膜表面改質 32 2-3-4 聚(苯乙烯-b-甲基丙烯酸甲酯)混摻均聚物之薄膜製備 32 2-3-5 低掠角小角度X 光散射量測樣品 33 2-4 儀器原理 35 2-4-1 原子力顯微鏡(AFM) 35 2-4-2 低掠角式小角度X 光散射儀 (GISAXS) 37 第3章 結果與討論 40 3-1 混摻聚苯乙烯在不同組成下之結構探討 41 3-2 奈米微相結構受不同基材影響之探討 47 3-3 混摻不同分子量對微相分離結構之影響 54 第4章 結論 59 第5章 參考文獻 60 第6章 附錄 68

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