Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/3262
標題: 醋酸纖維素/二氧化鈦奈米顆粒混合基材薄膜應用於二氧化碳和甲烷的分離
Separation of CO2 and CH4 Using Cellulose Acetate/TiO2 Nanoparticle Mixed Matrix Membranes
作者: 羅梓宏
Lo, Tzu-Hung
關鍵字: 混合基材薄膜
Mixed matrix membrane
醋酸纖維素
二氧化鈦
氣體分離
Cellulose acetate
Titanium dioxide
Gas separation
出版社: 化學工程學系所
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摘要: 本研究使用醋酸纖維素(cellulose acetate, CA)和摻入無機填料(球形奈米 Titanium dioxide, TiO2)製備為混合基材薄膜(MMMs),由此產生的混合基材薄膜,進行TGA,DSC,SEM和TEM薄膜結構分析。結果發現,當混合基材薄膜於高含量( ≥ 3wt.%)無機填料時,聚集變得更加嚴重。製備CA/TiO2 混合基材薄膜,進行CO2和CH4 的氣體滲透。 CO2/CH4選擇性增加,從15.87(純CA膜)變成為最高值34.30的1 wt.% TiO2混合基材薄膜,當二氧化鈦含量大於1 wt.%時,選擇率則減少。薄膜型態可分為兩種情形:理想型態( ≤ 2 wt.%) 和 界面孔洞型態( > 2 wt.%) 。高分子與奈米顆粒間產生孔洞和混合基材薄膜的缺陷的形成,導致氣體滲透率上升和氣體的選擇性下降的情形。
Cellulose acetate (CA)-based mixed matrix membranes (MMMs) with the incorporation of inorganic fillers (spherical Titanium dioxide, TiO2 nanoparticles) were prepared in this study. The resulting MMMs were characterized by TGA, DSC, SEM, and TEM. It was found that inorganic filler agglomeration became more serious at higher-filler-content ( ≥ 3wt.%) MMMs. CO2 and CH4 permeabilities were measured for these prepared CA/TiO2 MMMs. The CO2/CH4 selectivity increased from 15.87 (pure CA membrane) to a maximum value of 34.30 at 1 wt.% TiO2 MMM, and then decreased for the TiO2 weight percentages > 1. The membrane morphology may be divided into two cases : ideal morphology ( ≤ 2 wt.%) and interface voids ( > 2 wt.%). The formation of interface voids and membrane defects in MMMs contributed to higher gas permeabilities but lower gas selectivity.
URI: http://hdl.handle.net/11455/3262
其他識別: U0005-1708201220145700
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-1708201220145700
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