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論文名稱 Title |
具光照分解性質之新穎雙極性嵌段共聚物PMMA-P2VP之自組裝研究 Self-Assembly of Novel Photodegradable Double Hydrophilic Block Copolymer Poly(methyl methacrylate)-b-Poly(2-vinyl pyridine) |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
108 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2017-07-17 |
繳交日期 Date of Submission |
2017-08-07 |
關鍵字 Keywords |
交聯、PMMA-P2VP、光裂解、嵌段共聚物、自組裝、液晶 PMMA-P2VP, Cross-link, Photodegradable, Liquid Crystalline, Block copolymer, Self-Assembly |
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統計 Statistics |
本論文已被瀏覽 5738 次,被下載 0 次 The thesis/dissertation has been browsed 5738 times, has been downloaded 0 times. |
中文摘要 |
雙嵌段共聚物由於各段體積分率的差異,可自組裝形成不同有序結構。在這裡,我們研究兩段皆親水的大分子量PMMA170-P2VP於塊材以及薄膜態的型態研究,其中MMA的部分在塊材與薄膜態以不同溶劑配置皆具有可裂解的特性。雙嵌段共聚物PMMA-P2VP若以甲苯或苯來配置,分別會形成球狀或柱狀結構。若進一步使用中性溶劑,例如氯仿、四氫呋喃(THF)、三氯乙烷(TCE)、二氯乙烷(DCE)、鄰二氯苯(DCB),則會形成層板狀結構。此外,PMMA-P2VP的薄膜態若以丙二醇甲基醚醋酸酯(PGMEA)或苯來配置,則會形成球狀微結構。若以氯仿、四氫呋喃、三氯乙烷、二氯乙烷、鄰二氯苯可能由於自組裝的時間不夠久,而形成無序型結構。很有趣的地方是,若將PMMA-P2VP進行季氨化反應,會讓無序結構的薄膜具有無序型光子晶體,反射的可見光光譜波長位置為392 nm。為了增加型態多樣性,我們混參液晶和純P2VP高分子到PMMA-P2VP系統當中,得到了少見的Gyroid結構。若以UV光來對PMMA部分作光裂解,則會得到P2VP的多孔模板,可做未來應用。 |
Abstract |
Block copolymers (BCPs) can self-assemble into different order microstructures depending on the effective volume fraction of the each component. Here, we first investigated the self-assembled morphologies of the high-molecular-weight (high-Mw) Polymethylmethacrylate-Poly(2-vinylpyridine) (PMMA-P2VP) consisting of degradable PMMA block in bulk and thin-film states prepared from various solvents. The as-cast PMMA-P2VP BCPs from toluene and benzene show spherical and cylindrical microstructures, respectively. With utilizing neutral solvents for casting such as chloroform, tetrahydrofuran (THF), 1,1,2-trichloroethane (TCE) and dichloroethane (DCE), lamellar microstructures are obtained. In addition, the as-cast PMMA-P2VP thin films from propylene glycol monomethyl ether acetate (PGMEA) and benzene reveal spherical microstructures. Disorder morphologies are observed in the thin films spin-casting from neutral chloroform, THF, TCE, 1,2-dichlorobenzene and DCE, due to insufficient time for self-assembly. Interestingly, the network morphology of the PMMA-P2VP thin film after solvent annealing is able to exhibit visible and angle-independent reflectance at 392 nm, namely, amorphous photonic crystal. To enrich the self-assembled microstructures, P2VP homopolymer or liquid crystal were furthermore added into the PMMA-P2VP. Morphological transitions and resultant unique gyroid microstructures can thus be fabricated. Taking advantage of the photodegradable PMMA block by UV irradiation allows us to generate nanoporous hydrophilic P2VP templates for potential applications in absorption and nanoreactor fields |
目次 Table of Contents |
Table of Contents 論文審定書 i 誌謝 ii 摘要 iii Abstract iv List of Figures ix List of Tables xx Chapter 1. Introduction 1 1.1 Self-Assembly 1 1.2 Block Copolymer (BCP) Self-assembly 3 1.3 Controlled Orientation of BCP Microphase Separation 6 1.3.1 Substrate-induced Orientation 6 1.3.2 Solvent Evaporation-induced Orientation 7 1.4 Nanoporous Template from PS-PMMA BCPs 8 1.5 Application of PS-b-PMMA 13 1.5.1 Filtration of Viruses 13 1.5.2 Shallow-Trench Array Capacitor 17 1.6 Patten Transfer with PS-PMMA Templates 20 1.6.1 Nanoparticle Arrays on Nanopatterns 20 1.6.2 Nanowire in BCP Templates 22 1.7 Application of PS-P2VP 24 1.7.1 Simple Sugar Sensing 24 1.7.2 Electro Chemically Tunable BCP Full Color Pixels 27 1.7.3 Ions Sensing 32 1.7.4 Broad-Wavelength-Range Chemically Tunable BCP Photonic Gels 33 1.7.5 Liquid Crystal Ordering Helps Self-Assembly of Block Copolymer 37 1.7.6 Characteristic of MoS2 39 1.7.7 P2VP Incorporated with MoS2 41 Figure 1-25. Overview of the synthetic process for block copolymer templated molybdenum disulfide nanowire arrays. 79 41 Chaper 2. Objectives 42 Chapter 3. Materials and Experimental Methods 44 3.1 Materials 44 Table 3-1. Characterization of PMMA-P2VP BCPs 44 3.2 Sample Preparation 44 3.2.1 Sample in Bulk State 44 3.2.2 Sample in Thin Film State 45 3.2.3 PMMA-P2VP/P2VP Polymer Blending System 45 3.2.4 PMMA-P2VP/CholHS Polymer Blending System 45 3.2.5 Photodegradation of PMMA-P2VP 46 3.3 Microstructural Characterization 46 3.3.1Transmission Electron Microscopy (TEM) 46 3.3.2 Scanning Electron Microscopy (SEM) 47 3.3.3 Ultra-small Angle X-ray Scattering (USAXS) 47 3.3.4 Ultraviolet–Visible Absorption Spectroscopy 47 3.3.5 Fourier Transform Infrared (FTIR) Spectroscopy 48 Chapter 4. Results & Discussion 49 4.1 Self-Assembly of High-Mw PMMA-P2VP BCPs in Bulk 49 4.2 As-Spun Morphologies of High-Mw PMMA-P2VP Thin Films 55 4.3 Thin-Film Morphologies after Thermo-Solvent Annealing 61 4.4 Quaternized Thin-Film Morphologies 63 4.5 PMMA-P2VP blend with homopolymer 64 4.6 Ordered Microstructures in PMMA170-P2VP160/CholHS Complexes 66 4.7 Hydrogen bonding interaction by FTIR analysis 72 4.8 Photodegradation of PMMA-P2VP(CholHS) 73 4.9 Crosslinked PMMA-P2VP(CholHS) BCP 75 Chapter 5. Conclusion 77 Chapter 6. References 78 |
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