In the present contribution, the synthesis of well‐defined water‐soluble phosphonic‐acid based poly(2‐ethyl‐2‐oxazoline) and the preliminary study of their sorption properties were reported. For such purpose, poly(2‐ethyl‐2‐oxazoline) (POx) was first prepared. Then, controlled hydrolysis allowed the obtaining of statistical poly(2‐ethyl‐2‐oxazoline)‐stat‐poly(ethyleneimine) (POx‐st‐PEI) with 20% of ethyleneimine units, which allowed maintaining water solubility of the copolymers. The latter were successfully functionalized with either dimethyl(acryloyloxymethyl) phosphonate (APC1) or diethyl‐2‐(acrylamido)ethylphosphonate (DAAmEP) using Michael reaction. Phosphonated esters were hydrolyzed to produce phosphonic acid groups, thus, leading to hPOx‐st‐PEI‐APC1 and hPOx‐st‐PEI‐DAAmEP copolymers. Finally, functionalized statistical copolymers were successfully used for the sorption of divalent or trivalent metallic cations. The reported work aims at reporting the synthesis of original polyoxazoline materials functionalized with phosphonic acid groups that could be further employed for water treatment in polymer enhanced ultrafiltration processes.

中文翻译：

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水溶性膦酸官能化的聚（2-乙基-2-恶唑啉）螯合聚合物，用于吸附金属阳离子

在目前的贡献中，报道了定义明确的水溶性膦酸基聚（2-乙基-2-恶唑啉）的合成及其吸附性能的初步研究。为此，首先准备了聚（2-乙基-2-恶唑啉）（POx）。然后，受控的水解允许统计聚的获得（2-乙基-2-恶唑啉） - STAT -聚（乙烯亚胺）（POx- ST -PEI）与乙烯亚胺单元，其允许保持共聚物的水溶性20％。后者通过迈克尔反应成功地被二甲基（丙烯酰氧基甲基）膦酸酯（APC1）或二乙基-2-（丙烯酰胺基）乙基膦酸酯（DAAmEP）官能化。膦酸酯水解产生膦酸基团，从而导致h POx-ST -PEI-APC1和^ h POx- ST -PEI-DAAmEP共聚物。最后，功能化的统计共聚物已成功用于吸附二价或三价金属阳离子。报道的工作旨在报道用膦酸基团官能化的原始聚恶唑啉材料的合成，该材料可进一步用于聚合物增强的超滤过程中的水处理。