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增塑劑與奈米添加劑對聚碳酸酯結晶行為之影響 = Effect of Pl...

國立高雄大學化學工程及材料工程學系碩士班

增塑劑與奈米添加劑對聚碳酸酯結晶行為之影響 = Effect of Plasticizer and Nanofillers on the Crystallization of Bisphenol A Polycarbonate

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Effect of Plasticizer and Nanofillers on the Crystallization of Bisphenol A Polycarbonate
作者:	許智淵,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	民100
面頁冊數:	195葉部份彩圖，表格 : 30公分;
標題:	聚碳酸酯
標題:	polycarbonate
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/56834128931008052028
附註:	參考書目：葉168-180
摘要註:	增塑劑－epoxy 與奈米添加劑-奈米碳管 (Multi-Wall Carbon Nanotubes) (MWCNT) 、機改質層狀矽酸鹽-蛭石organic-vermiculite (OVMT) 對聚碳酸酯Poly(Bisphenol A Carbonate) (PC) 之結晶行為影響以偏光學顯微鏡(POM)、熱重分析儀 (TGA)、廣角X光繞射儀 (WAXD)、微分掃描熱卡計 (DSC)、掃描式電子顯微鏡 (SEM) 來研究。因為PC分子鏈具有堅硬之雙酚A結構，PC分子鏈段規則排列於結晶格子中，需經過長時間之高溫熱處理，才有足夠之能量促使PC分子鏈段進入結晶格子中；但是研究中發現PC本身結晶能力極差，且隨熱退火 (200℃) 時間增加分子量隨之下降。PC/Epoxy摻合系統呈現均勻相及單一玻璃轉儀溫度之相容系統，低分子量Epoxy可柔軟化堅硬PC分子鏈段並降低玻璃轉移溫度(Tg)；Avrami equation分析獲得參數k，與Neat PC比較發現明顯提昇PC結晶之能力。PC/MWCNT 混成材料系統中MWCNT對PC無任何作用力之影響，並由Avrami equation分析獲得參數n與k，與Neat PC比較證明提昇PC結晶之能力，且與Neat PC具有相同之n值，表示MWCNT之添加只具有成核之效用，對結晶結構無影響；PC/OVMT混成材料系統中OVMT對PC無明顯之作用力存在，並由Avrami equation分析獲得參數n與k，與Neat PC比較證明提昇PC結晶速率，但n值從2變成1.5±0.3，表示添加OVMT改變PC球晶結構，且於SME觀察獲得PC/OVMT具有環型結晶結構。研究中以Hoffman-Lauritzen secondary nucleation theory探討奈米添加劑對PC之結晶成核活化能。經Hoffman-Lauritzen分析獲得Kg值，添加MWCNT含量為3 wt% 有最小成核活化能6.98 x 105 (K2)，OVMT含量為10 wt% 具有最小成核活化能1.43 x 106 (K2)，添加MWCNT具有較好之成核劑效用。 Effect of epoxy, multi-wall carbon nanotubes (MWCNT) and organic-vermiculite (OVMT) on the crystallization of bisphenol-A polycarbonate was investigated using polarized optical microscopy (POM), thermal gravimetric analysis (TGA), wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The existence of the phenyl group on the molecular chain plus the two methyl side groups leads to molecular stiffness in the polycarbonate. This stiffness gives large effect on the physical properties of polycarbonate. The attraction between the phenyl groups and different molecules leads to a lack of mobility on the individual molecules. This inflexibility and the absence of mobility will prevent polycarbonates from having a significant crystalline structure. Generally, the regularity of structure in the PC will take a long annealing time at a high temperature (TC=200℃). Furthermore, the regularity of structure in the PC was enhanced by the plasticizer and nucleating agents. The result of morphology and thermal analysis revealed that the PC/epoxy blends exhibited a homogeneous phase and a composition-dependent glass transition temperature (Tg). In the PC/epoxy blends, low molecular weight epoxy promotes flexible molecular chains of PC, leading to lower Tg, and the epoxy content increases with the decrease of Tg of PC/epoxy blends. The nanofillers, MWCNT and OVMT, were used as the nucleating agents in both the PC/MWCNT and PC/OVMT hybrid systems. The size of spherulite in the PC/nanofillers hybrid systems was smaller than that in the neat PC. The initial time of crystallization for PC in the PC/nanofiller hybrid systems was faster than that of the neat PC. Especially, the ring band spherulite was found in the PC/OVMT hybrid systems. The crystallization nucleation activation energy of PC was studied using Hoffman-Lauritzen secondary nucleation theory in the study. In the PC/MWCNT hybrid system, the smallest nucleation activation energy was 6.98 x 105 (K2) when MWCNT content was 3 wt%. In the PC/OVMT hybrid system, the smallest nucleation activation energy was 1.43 x 106 (K2) when OVMT content was 10 wt%.

增塑劑與奈米添加劑對聚碳酸酯結晶行為之影響 = Effect of Plasticizer and Nanofillers on the Crystallization of Bisphenol A Polycarbonate
許, 智淵

增塑劑與奈米添加劑對聚碳酸酯結晶行為之影響 = Effect of Plasticizer and Nanofillers on the Crystallization of Bisphenol A Polycarbonate / 許智淵撰 - [高雄市] : 撰者, 民100. - 195葉 ; 部份彩圖，表格 ; 30公分.
參考書目：葉168-180.
聚碳酸酯polycarbonate

增塑劑與奈米添加劑對聚碳酸酯結晶行為之影響 = Effect of Plasticizer and Nanofillers on the Crystallization of Bisphenol A Polycarbonate
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330 $a 增塑劑－epoxy 與奈米添加劑-奈米碳管 (Multi-Wall Carbon Nanotubes) (MWCNT) 、機改質層狀矽酸鹽-蛭石organic-vermiculite (OVMT) 對聚碳酸酯Poly(Bisphenol A Carbonate) (PC) 之結晶行為影響以偏光學顯微鏡(POM)、熱重分析儀 (TGA)、廣角X光繞射儀 (WAXD)、微分掃描熱卡計 (DSC)、掃描式電子顯微鏡 (SEM) 來研究。因為PC分子鏈具有堅硬之雙酚A結構，PC分子鏈段規則排列於結晶格子中，需經過長時間之高溫熱處理，才有足夠之能量促使PC分子鏈段進入結晶格子中；但是研究中發現PC本身結晶能力極差，且隨熱退火 (200℃) 時間增加分子量隨之下降。PC/Epoxy摻合系統呈現均勻相及單一玻璃轉儀溫度之相容系統，低分子量Epoxy可柔軟化堅硬PC分子鏈段並降低玻璃轉移溫度(Tg)；Avrami equation分析獲得參數k，與Neat PC比較發現明顯提昇PC結晶之能力。PC/MWCNT 混成材料系統中MWCNT對PC無任何作用力之影響，並由Avrami equation分析獲得參數n與k，與Neat PC比較證明提昇PC結晶之能力，且與Neat PC具有相同之n值，表示MWCNT之添加只具有成核之效用，對結晶結構無影響；PC/OVMT混成材料系統中OVMT對PC無明顯之作用力存在，並由Avrami equation分析獲得參數n與k，與Neat PC比較證明提昇PC結晶速率，但n值從2變成1.5±0.3，表示添加OVMT改變PC球晶結構，且於SME觀察獲得PC/OVMT具有環型結晶結構。研究中以Hoffman-Lauritzen secondary nucleation theory探討奈米添加劑對PC之結晶成核活化能。經Hoffman-Lauritzen分析獲得Kg值，添加MWCNT含量為3 wt% 有最小成核活化能6.98 x 105 (K2)，OVMT含量為10 wt% 具有最小成核活化能1.43 x 106 (K2)，添加MWCNT具有較好之成核劑效用。 Effect of epoxy, multi-wall carbon nanotubes (MWCNT) and organic-vermiculite (OVMT) on the crystallization of bisphenol-A polycarbonate was investigated using polarized optical microscopy (POM), thermal gravimetric analysis (TGA), wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The existence of the phenyl group on the molecular chain plus the two methyl side groups leads to molecular stiffness in the polycarbonate. This stiffness gives large effect on the physical properties of polycarbonate. The attraction between the phenyl groups and different molecules leads to a lack of mobility on the individual molecules. This inflexibility and the absence of mobility will prevent polycarbonates from having a significant crystalline structure. Generally, the regularity of structure in the PC will take a long annealing time at a high temperature (TC=200℃). Furthermore, the regularity of structure in the PC was enhanced by the plasticizer and nucleating agents. The result of morphology and thermal analysis revealed that the PC/epoxy blends exhibited a homogeneous phase and a composition-dependent glass transition temperature (Tg). In the PC/epoxy blends, low molecular weight epoxy promotes flexible molecular chains of PC, leading to lower Tg, and the epoxy content increases with the decrease of Tg of PC/epoxy blends. The nanofillers, MWCNT and OVMT, were used as the nucleating agents in both the PC/MWCNT and PC/OVMT hybrid systems. The size of spherulite in the PC/nanofillers hybrid systems was smaller than that in the neat PC. The initial time of crystallization for PC in the PC/nanofiller hybrid systems was faster than that of the neat PC. Especially, the ring band spherulite was found in the PC/OVMT hybrid systems. The crystallization nucleation activation energy of PC was studied using Hoffman-Lauritzen secondary nucleation theory in the study. In the PC/MWCNT hybrid system, the smallest nucleation activation energy was 6.98 x 105 (K2) when MWCNT content was 3 wt%. In the PC/OVMT hybrid system, the smallest nucleation activation energy was 1.43 x 106 (K2) when OVMT content was 10 wt%.
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