混摻團聯式共聚高分子在液態中藉由氫鍵形成之自組裝行為研究

Abstract

本論文以第三丁基氧苯乙烯（4-tert-Butoxystyrene）、苯乙烯（styrene）、4-乙烯吡啶（4-vinyl pyridine）及甲基丙烯酸甲酯（methyl methacrylate）作為單體，以陰離子聚合反應及一水解反應去除保護基，合成一系列的Poly（vinylphenol-b-styrene）及Poly（4-vinyl pyridine -b-methyl methacrylate）團聯式共聚高分子，經由氫核磁共振光譜（1H-NMR）、傅立葉轉換紅外線光譜（FTIR）、凝膠滲透層析儀（GPC），分析此兩種團聯式共聚高分子的性質。 將合成出的兩種團聯式共聚高分子分別溶於同一種溶劑中，在溶液中慢慢滴加混摻，使其藉由氫鍵自組裝形成不同型態的微胞，並以穿透式電子顯微鏡（TEM）觀察其型態，動態光散射儀（DLS）測量其粒徑分佈。並以傅立葉轉換紅外線光譜（FTIR）去探討在不同溶劑（DMF及THF）及不同混摻比例下的氫鍵作用力。

A series of poly(vinylphenol-b-styrene) (PVPh-b-PS) and poly(4-vinyl pyridine-b-methyl methacrylate) (P4VP-b-PMMA) block copolymers were prepared by anionic polymerizations of 4-tert-butoxystyrene、styrene、4-vinyl pyridine and methyl methacrylate , followed by selective removal of the 4-tert-butoxystyrene protective group by hydrolysis reaction . The dibolck copolymers were investigated by proton nuclear magnetic resonance spectrometry (1H-NMR), Fourier transfer infrared spectrophotometer (FTIR) , gel permeation chromatography (GPC) . Finally, studied by dynamic light scattering (DLS) and transmission electron microscopy (TEM) is the coaggregation of PVPh-b-PS and P4VP -b-PMMA in tetrahydrofuran (THF) and N,N-Dimethylformamide (DMF). Self-assembly of the associating diblocks by the hydrogen bonding resulted in interesting block copolymer aggregation behavior and morphologies in single solvent . Infrared spectra provide positive evidence of hydrogen bonding interaction .