官能基化之鋯有機金屬框架對於聚苯並咪唑混合基材薄膜特性與氣體滲透之探討

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姓名

朱德叡(Te-Jui Chu) 查詢紙本館藏

畢業系所

化學工程與材料工程學系

論文名稱

官能基化之鋯有機金屬框架對於聚苯並咪唑混合基材薄膜特性與氣體滲透之探討
(Investigation of Functionalized Metal-Organic Framework/Polybenzimidazole Mixed-Matrix Membrane for Gas Separation)

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至系統瀏覽論文 (2025-7-31以後開放)

摘要(中)

有機金屬框架(Metal-organic framework, MOF)是一種常用於複合薄膜的多孔性填料材料。相較於純膜的性質，在各種複合膜中以混合基質薄膜(Mixed matrix membranes, MMMs)會有更佳優異的氣體輸送及分離表現，而官能基化的有機金屬框架材料則有助於改善混合基質薄膜的製備。MOF 上的官能基能夠提升氣體分離效果以及增加填料顆粒與高分子介面的親和力，以避免微結構的缺陷產生。舉例來說，以NH2-UiO-66 與PIM-1 合成的混合基質薄膜展現了因為官能基與高分子鍊產生氫鍵，因而加強了在高分子與填料顆粒的介面附著性[1]。而在本實驗中，我們使用純、胺基以及硝基化的鋯有機金屬框架(UiO- 66)來研究官能基化對Zr-MOF 與聚苯並咪唑(polybenzimidazole, PBI) 的效應，並且以5 ,10, 15 wt%的添加物比例來製備薄膜同時避免合成時顆粒團聚或沉澱的狀況。除此之外，我們以XRD 鑑定MOF 結構的結晶性；以SEM 觀察微結構下填料與高分子的包覆與交聯情形；以熱重分析(TGA)結構的穩定性以及樣品的熱崩解狀態。最後，我們會將薄膜樣品進行氣體通透的測試，以鑑定薄膜樣品對於氣體的滲透與選擇能力。

摘要(英)

Metal-organic framework (MOF) is a common material used as filler in polymer membranes. Such composite membranes, known as mixed matrix membranes (MMMs) perform better than neat membranes in gas separation applications. Functionalization of MOFs is an important method to improve the fabrication of MMMs. Functional groups enhance the gas separation and interaction between MOF and polymer surface to avoid the formation of defects. For instance, NH2-UiO-66/PIM-1 composite showed interfacial adhesion due to H-bonding interaction at the polymer surface[1] . In this work, we used UiO-66, amino-, and nitro-modified variants to investigate the effect of functional groups between Zr-MOFs and polybenzimidazole (PBI), and we prepared 5, 10 and 15 wt % MOF loading in the polymer in order to investigate agglomeration and sedimentation of particles. Furthermore, XRD characterization was used to determine the crystallinity of the MOF structure; EDS mapping images were used to investigate the dispersion of particles in the matrix; SEM images showed the level of interaction between filler and polymer; TGA analysis indicated the structural stability and the decomposition of the composites. Finally, gas permeation tests demonstrate the gas transport properties and selectivity of the membranes.

關鍵字(中)

★ 鋯有機金屬框架 (UiO-66, NH2-UiO-66 and NO2-UiO-66)
★ 官能基化
★ 聚苯並咪唑
★ 氣體滲透與分離
★ 有機無機複合薄膜

關鍵字(英)

★ Zr-MOFs (UiO-66, NH2-UiO-66 and NO2-UiO-66)
★ gas permeation
★ gas separation performance
★ functionalization
★ Mixed Matrix Membrane

論文目次

Table of Contents
摘要................................................................................................................................. i
Abstract ........................................................................................................................ iii
Acknowledgement ........................................................................................................ iv
Table of Contents ........................................................................................................... v
List of Figures .............................................................................................................. vii
List of Tables ................................................................................................................. ix
Chapter 1 Background ................................................................................................... 1
1-1 Introduction ................................................................................................ 1
1-2 Review of Relevant Literature ................................................................... 5
1-3 Motivation .................................................................................................. 9
Chapter 2 Experimental ............................................................................................... 11
2-1 Materials and Reagents ............................................................................ 11
2-2 Material Analysis Techniques .................................................................. 11
2-3-1 X-ray Diffraction (XRD) ............................................................. 11
2-3-2 Scanning Electron Microscopy (SEM) ........................................ 12
2-3-3 Energy-Dispersive X-ray Spectroscopy (EDS)............................ 13
2-3-4 Thermogravimetric Analysis (TGA) ............................................ 13
2-3-5 BET Surface Area Analysis and Pore Size Distribution .............. 13
2-3-6 Fourier-Transform Infrared spectroscopy (FTIR) ........................ 15
2-3-7 Single Gas Separation System............................................................ 15
2-3 Experimental Procedure ........................................................................... 17
2-4 Instruments ............................................................................................... 17
2-4-1 Synthesis of UiO-66 and Derivatives .......................................... 17
2-4-2 Synthesis of Pure PBI membrane & UiO-66 MOFs/PBI MMMs 18
2-4-3 Gas permeation measurements for membranes ........................... 20
Chapter 3 Results and Discussion ................................................................................ 22
3-1 UiO-66 powder Characterization ............................................................. 22
3-1-1 X-Ray Diffraction of UiO-66 and the Derivatives....................... 22
3-1-2 Morphology of UiO-66 and the Derivatives ................................ 23
3-1-3 Sorption Analysis of UiO-66 and the Derivatives ....................... 24
3-1-4 Pore size distribution of UiO-66 and the Derivatives .................. 26
3-1-5 FTIR spectra of UiO-66 and the Derivatives ............................... 29
3-1-6 Thermogravimetric Analysis of UiO-66 and the Derivatives ...... 30
3-2 UiO-66s/PBI Mixed Matrix Membrane Characterization ....................... 32
X-Ray Diffraction of UiO-66 and the Derivatives/PBI MMMs .. 32
The Morphology of UiO-66 and the Derivatives/PBI Mixed
vi
Matrix Membrane ........................................................................................ 34
FTIR Spectra of UiO-66 and the Derivatives/PBI MMMs .......... 38
Thermogravimetric Analysis of UiO-66 and the Derivatives /PBI
MMMs 40
3-3 Gas Separation Performance of UiO-66 and the Derivatives/PBI MMMs
42
Chapter 4 Conclusions ................................................................................................. 49
Chapter 5 Future Work ................................................................................................. 50
References .................................................................................................................... 51

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指導教授

張博凱(Bor-Kae Chang)

審核日期

2020-7-28

推文