- 學位論文
利用原子轉移自由基聚合法進行﹝乙烯/5-亞乙基-2-降冰片烯/降冰片烯﹞接枝聚合丙烯酸系列單體之合成研究
Systhesis of poly[ethylene-co-(5-ethylidene-2-norbornene)-co-norbornene] graft acrylic acid series monomer by atom transfer radical polymerization
摘要
COC材料是目前新興高分子材料之一種，擁有多項優點，例如高成膜性，高透光性，熱穩定性佳，良好機械性質，但其材料屬於非極性，所以許多科學家經過一連串的研究，發展出許多的聚合技術嘗試各種不同的方法，包含接枝聚合極性單體、與極性單體形成段式聚合或直接共聚，最常使用的方式是將聚烯烴進行接枝或嵌段官能化改質，接枝狀或嵌段式的聚烯烴具有大量的官能基並且還能夠維持聚烯烴本身的性質，通常能夠有效的改進聚烯烴與其他材料之間的相容性。期望改善高分子的應用限制，帶來材料上不同領域之應用。 本實驗主要是探討利用原子轉移自由基聚合法（atomic transfer radical polymerization）官能化poly[E-co-ENB-co-norbornene]為研究重心，先利用poly[E-co-ENB-co-norbornene]上未飽和烯烴基與氯化氫水溶液進行氯化反應，可得到含－Cl官能基之COC高分子，接著利用－Cl官能基當起始點進行原子轉換自由基聚合法接枝PMMA以及PBA，並深入針對在不同溫度、觸媒系統，溶劑等不同反應條件下之動力學探討。 並使用核磁共振光譜儀、傅立葉紅外線光譜儀、微差掃描熱卡計、凝膠滲透層析儀、UV-可見光光譜儀，以及表面接觸角分析儀探討各反應之反應機制、控制條件。
關鍵字
原子轉移自由基聚合法並列摘要
Cyclic olefin copolymers are important in polymer material due to their high transparency, good thermal stability, mechanical strength and easy to make film. The hydrophobic cyclic olefin copolymers were not compatible with hydrophilic material and have less chemical attraction each other. Therefore scientists develop many polymerization technology,which contain the grafting polymerization, blocking polymerization, and direct copolymerization with polar monomer, Most of them are grafting polymerization or blocking polymerization, since they contain the function of group and also maintain polymer orginal properties. We expect to improve polymer applications and bring on the material apply to the different domain. This experiments are carried by using the unsaturated alkene alkyl radical on poly[E-co-ENB-co-norbornene] and the hydrogen chloride watery solution. After the reaction the Cyclic olefin copolymers contain Cl group, The grafting of PMMA and PBA are used by atomic transfer radical polymerization methol. The reactions in different temperature, the catalyst system, and the solvent are discussed. At the same time, the products are identified by 1H-NMR, FT-IR, DSC. Theproperties of Cyclic olefin copolymers are studied by using of GPC, UV-VIS, and Contact Angle .
參考文獻
延伸閱讀
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