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首页> 外文会议>12th Romanian International Conference on Chemistry and Chemical Engineering, Sep 13-15, 2001, Bucharest, Romania >Polyurethane Cationomers with Pyridinium Rings. Synthesis, Characterization and Biological Activity
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Polyurethane Cationomers with Pyridinium Rings. Synthesis, Characterization and Biological Activity

机译：带有吡啶环的聚氨酯阳离子聚合物。合成，表征和生物活性

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摘要

A series of new segmented polyurethanes based on polycaprolactone diol with or without polyethylene oxide diol of 2000 average molecular weight, isophorone diisocyanate and 2,6-bis(hydroxymethyl)pyridine was synthesized and characterized. By a quaternization reaction of the pyridine rings with benzyl bromide (about 85% quaternization degree), polyurethane cationomers of pyridinium type with an ionic moieties content under 1 meq g~(-1) polymer, were prepared. The antimicrobian activity of the pyridinium polymers against some bacteria such as E.Coli, S.Aureus and B.Subtilis was in vitro determined. A better antimicrobian response of the polycations containing long hydrophobic segments compared with those obtained by using polyethylene oxide sequences was evidenced.
机译：合成并表征了一系列基于聚己内酯二醇，有无平均分子量为2000的聚环氧乙烷二醇，异佛尔酮二异氰酸酯和2,6-双（羟甲基）吡啶的新型分段聚氨酯。通过吡啶环与苄基溴的季铵化反应（季铵化度约为85％），制备了吡啶基型聚氨酯离聚物，其离子部分的含量低于1meq g〜（-1）聚合物。体外测定了吡啶鎓聚合物对某些细菌如大肠杆菌，金黄色葡萄球菌和枯草芽孢杆菌的抗微生物活性。与使用聚环氧乙烷序列获得的聚阳离子相比，含有长疏水链段的聚阳离子具有更好的抗微生物反应。

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