带有阳离子和反应性基团的“季铵盐”聚合物：合成，表征和应用,Macromolecules

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带有阳离子和反应性基团的“季铵盐”聚合物：合成，表征和应用
Macromolecules ( IF 5.1 ) Pub Date : October 15, 2008 , DOI: 10.1021/ma801064e
Vishal Goel ₁ , Uwe Beginn ₁ , Ahmed Mourran ₁ , Martin Möller ₁

Affiliation

N，N，N-三甲基-3-（{[（（2-oxo-1,3-dioxolan-4-yl）methoxymethoxy]羰基]氨基）丙烷-1-碘化铵对支链聚亚乙基亚胺的后续处理（2-oxo-1,3-dioxolan-4-yl）methyl（oxiran-2-ylmethyl）carbamate或4-[（oxiran-2-ylmethoxymethoxy）methyl] -1,3-dioxolan-2-one产生带有季铵和环状碳酸酯基团的“季铵聚合物”共价连接到大分子上。¹ H和¹³用模型反应混合物和大分子产物进行的13 C NMR光谱分析表明，季铵基团选择性地连接到聚合物离析物的伯氨基上。通过DSC和TGA进一步表征了新的功能性大分子。在氧气/氩气等离子体预处理的高度定向的热解石墨（HOPG）上旋涂含阳离子聚合物的环状碳酸酯基团后，扫描力显微镜显示存在覆盖基材的3 nm厚膜。这种超薄涂层具有持久性，可防止甲醇萃取，证明聚合物在基材上的附着力。

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‘Quat-Primer’ Polymers Bearing Cationic and Reactive Groups: Synthesis, Characterization, and Application

Subsequent treatment of branched poly(ethylene imine) with N,N,N-trimethyl-3-({[(2-oxo-1,3-dioxolan-4-yl)methoxy]carbonyl}amino)propan-1-ammonium iodide and either (2-oxo-1,3-dioxolan-4-yl)methyl(oxiran-2-ylmethyl)carbamate or 4-[(oxiran-2-ylmethoxy)methyl]-1,3-dioxolan-2-one yielded ‘quat-primer polymers’ bearing quarternary ammonium and cyclic carbonate groups covalently linked to the macromolecule. ¹H and ¹³C NMR spectroscopy with model reaction mixtures and the macromolecular products revealed that the quaternary ammonium groups were selectively attached to the primary amino groups of the polymeric educt. The new functional macromolecules were characterized further by means of DSC and TGA. Upon spin coating the cyclic carbonate groups containing cationic polymers on oxygen/argon plasma-pretreated highly oriented pyrolytic graphite (HOPG), scanning force microscopy revealed the presence of a 3 nm thick film covering the substrate. This ultrathin coating was persistent against extraction with methanol, demonstrating the adherence of the polymer on the substrate. Applied on carbon fibers the polymer layer improved the interfacial shear strength between the carbon fiber and an epoxy resin matrix by 35% with respect to nontreated carbon fibers as demonstrated by single-fiber fragmentation tests.

更新日期：2017-01-31

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