Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/3323
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dc.contributor.advisor吳震裕zh_TW
dc.contributor.advisorWu, Jeng-Yueen_US
dc.contributor.author林信賢zh_TW
dc.contributor.authorHsinHsien, Linen_US
dc.date2001zh_TW
dc.date.accessioned2014-06-06T05:31:44Z-
dc.date.available2014-06-06T05:31:44Z-
dc.identifier.urihttp://hdl.handle.net/11455/3323-
dc.description.abstractPolymethyl methacrylate (PMMA) latex and methyl methacrylate-butyl actylate copolymer latex were prepared by microemulsion polymerization using anionic surfactant dodecyl sulfate sodium salt. By adsorbing cationic polyelectrolytes, the montmorillonite (MMT) surfaces carry positive charges. Therefore, the polymer/MMT complexes can be obtained through adsorbing negative charge latex particles on the surfaces of MMT. The MMT d-spacings and contents in compls were analyzed by X-ray diffraction (XRD) and Thermogravimetric Analyzer (TGA), respectively. Subsequently, PMMA/MMT nanocomposites were prepared through bulk polymerization of methyl methacrylate (MMA) along with polymer/MMT complexes, or bleexending polymer/MMT complexes and PMMA by a Brabender mixer. The d-spacings, glass transition temperatures, and modulus (E', E'' and tanδ)of these nanocomposites were analyzed by XRD, Differential Scanning Calorimeter (DSC) and Dynamic Mechanical Analyzer (DMA), respectively. As compared to the pristine PMMA, the storage modulus (E') of the nanocomposites with 3 wt% of MMT prepared through bulk polymerization and Brabender-mixing exhibit increase percentages of 40 % and 32 %, respectively. It is important to note that adding an appropriate amount of polybutyl acrylate (PBA) to the MMT-containing nanocomposites prepared via bulk polymerization will further improve the storage modulus. In this research, the PMMA/MMT nanocomposites with excellent mechanical properties were successfully developed by bulk polymerization and Brabender-mixing.en_US
dc.description.abstract本研究主要以微乳化聚合(microemulsion polymerization)方式製備聚甲基丙烯酸甲酯(polymethyl methacrylate,PMMA)高分子乳液及甲基丙烯酸甲酯/丙烯酸丁酯共聚合高分子乳液,利用表面帶負電荷高分子粒子與經吸附陽離子聚電解質而表面帶正電荷之蒙脫土於水溶液中進行吸附凝集,形成高分子/蒙脫土錯合物 (complexes) ,並以XRD、TGA分析錯合物中蒙脫土層間距離變化及蒙脫土含量。最後將此高分子/蒙脫土錯合物與聚甲基丙烯酸甲酯進行熔融混煉,或膨潤分散於MMA單體中進行塊狀聚合的方式製備聚PMMA/蒙脫土奈米複合材料。利用XRD觀察蒙脫土在複合材料中的層間距離,DSC分析其玻璃轉移溫度(Tg),並以動態機械分析儀(DMA)測量複合材料的儲存模數(E’)、損失模數(E’’)及阻尼係數(tanδ)等機械性質。 DMA測試結果顯示,添加3 wt%蒙脫土經由塊狀聚合及熔融混煉方式製備之PMMA/蒙脫土奈米複合材料其儲存模數(E’)較純PMMA分別提高了40 %及32 %。我們並且發現於塊狀聚合所製備之複合材料中添加適量的聚丙烯酸丁酯將可進一步提昇其儲存模數 本研究使用高分子與蒙脫土凝集所形成的錯合物,經由塊狀聚合與熔融混煉成功製備PMMA/蒙脫土奈米複合材料,並進一步提昇了PMMA的機械性質。zh_TW
dc.description.tableofcontents中文摘要…………………………………………………………Ⅰ 英文摘要…………………………………………………………Ⅱ 謝誌………………………………………………………………Ⅲ 目錄………………………………………………………………Ⅳ 表目錄……………………………………………………………Ⅵ 圖目錄……………………………………………………………Ⅷ 一、緒論…………………………………………………………1 1.1 前言……………………………………………………1 1.2 研究動機與目的………………………………………6 1.3 研究方向……….……………………………………….…7 二、文獻回顧與研究方法………………………………………8 2.1 微乳化聚合相關發展文獻……………..…………..8 2.2 含甲基丙烯酸甲酯、丙烯酸丁酯單體微乳化及微 乳化共聚合相關文獻……………..………………….…15 2.3 黏土/高分子乳液作用相關文獻………………….…….21 2.4 甲基丙烯酸甲酯/黏土奈米複合材料相關文獻………..26 2.5 研究方法與流程………………………………………...33 三、實驗…………………………………………………….…36 3.1 實驗材料…………………………………………….36 3.2 實驗儀器…………………………………………….38 3.3 實驗步驟………………………………………….…40 四、結果與討論……………………………………………….45 4.1界面活性劑濃度與甲基丙烯酸甲酯微乳化聚合關係..…45 4.2 丙烯酸丁酯含量與甲基丙烯酸甲酯/丙烯酸丁酯微 乳化共聚合關係……………………………………..….46 4.3 PMMA及共聚物與黏土之錯和物之製備與分析.…..47 4.4. PMMA/蒙脫土奈米複合材料之製備...……………49 4.4.1 塊狀聚合法………...……………………….49 4.4.2 熔融混煉法……………………………….….51 4.5 PMMA/蒙脫土奈米複合材料物理性質分析…………52 4.5.1 層間距離分析….……………………...……52 4.5.2 熱性質分析…….…………………………….53 4.5.3 機械性質分析...…………………………….56 五、結論…………………………………………………….…60 六、參考文獻………………………………………………….62zh_TW
dc.language.isoen_USzh_TW
dc.publisher化學工程學系zh_TW
dc.subjectmicroemulsion polymerizationen_US
dc.subject微乳化聚合zh_TW
dc.subjectadsorptionen_US
dc.subjectcomplexesen_US
dc.subjectnanocompositesen_US
dc.subject吸附zh_TW
dc.subject錯合物zh_TW
dc.subject奈米複合材料zh_TW
dc.titlePreparation and Physical Properties of Polymethyl methacrylate/Montmorillonite Nanocompositesen_US
dc.title聚甲基丙烯酸甲酯與蒙脫土奈米複合材料製備及物性分析zh_TW
dc.typeThesis and Dissertationzh_TW
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextnone-
Appears in Collections:化學工程學系所
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