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研究生:蔡呈杰
研究生(外文):Cheng -Chieh Tsai
論文名稱:PLLA/Clay奈米複合材料之水解研究
論文名稱(外文):Study on hydrolysis of PLLA/Clay
指導教授:林麗惠林麗惠引用關係
指導教授(外文):Li-Hui Lin
學位類別:碩士
校院名稱:萬能科技大學
系所名稱:工程科技研究所
學門:工程學門
學類:綜合工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:110
中文關鍵詞:聚左乳酸蒙脫土奈米複合材料水解
外文關鍵詞:PLLAOMLSnanocompositeshydrolysis
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製備生物可分解聚左乳酸黏土奈米複合材料(PLLA/Clay),其作法是先利用四級銨鹽藉由離子交換法將片層蒙脫土有機化改質,使蒙脫土之層與層間的距離擴大,成奈米級有機化蒙脫土(OMLS),再利用溶劑插層法使OMLS均勻分散於聚左乳酸高分子基材中而製得。本研究之目的主要在探討OMLS的加入對聚左乳酸之熔融與結晶性質有何影響。藉由XRD及TEM可以證明OMLS確實分散均勻,以偏光顯微鏡(POM)觀察水解前後結晶型態上的轉變,以熱重分析儀(TGA)分析確定OMLS之添加對於PLLA/Clay奈米複合材料的熱裂解溫度及耐熱性的提昇的確有效其水解後之熱裂解溫度及耐熱性變化可藉由示差熱掃描分析儀(DSC)得知,並可瞭解聚乳酸奈米複合材料在水解前後熔融與結晶程序的吸放熱之變化情形,FT-IR則可確認PLLA/Clay奈米 複合材料在經T1~T5溫度範圍內結晶,溫度越高在1756 cm-1、1749 cm-1兩處吸收峰越明顯,而水解後則在3300 cm-1處之吸收峰強度增強。
A clay modified by Dilauryl dimethyl Ammonium Bromide [C12H25N (CH3) 3Br ] (OMLS) was used to prepare /clay nanocomposite dispersions. X-ray diffraction revealed that PLLA was able to intercalate the clay galleries. FTIR spectra of the PLLA/clay nanocomposites showed the presence of interactions between the exfoliated clay platelets and the poly(L-lactic acid). Thermogravimetric analysis(TGA) and differential scanning calorimetry(DSC) were performed to study the thermal behavior of the before and after hydrolysis composites. The properties of the PLLA/clay nanocomposites were also examined as functions of the organoclay content. The exfoliated organoclay layers acted as nucleating agents, and as the organoclay content increased, the crystallization temperature increased. The resulting materials were make use of Avrami equation to analyze that crystallization growth of PLLA/Clay nanocomposites .
目錄
中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1.1前言 1
1.2研究動機與目的 2

第二章 文獻回顧與基本原理 3
2.1生物可分解高分子 3
2.2高分子/矽酸鹽奈米複合材料 7
2.3聚乳酸與聚乳酸奈米複合材料的結晶行為 14
2.4聚乳酸降解 18

第三章 實驗部份 20
3.1實驗材料 20
3.2分析儀器 21
3.3奈米複合材料之製備 22
3.3.1蒙脫土有機化改質 22
3.3.2聚乳酸與改質蒙脫土混合 24
3.3.3 POM之等溫結晶試樣製備 25
3.4 複合材料之水解 25
3.5材料性質分析 26

第四章 結果與討論 28
4.1蒙脫土的有機化改質 28
4.2奈米複合材料之製備 30
4.3熱分析 33
4.5偏光顯微鏡(POM) 36
4.5示差熱掃描分析儀(DSC)之量測結果 41
4.5.1等溫結晶溫區的選取 41
4.5.2等溫結晶曲線與熔融曲線 42
4.10紅外線光譜FTIR 86

第五章 結論 91
參考文獻 92
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