Abstract

The products of triethanolamine- and triethylamine-catalyzed reactions of etherification of orthophosphoric acid using poly(oxypropylene glycol)-1000 are studied. It is shown that the nature of tertiary amine markedly influences the completeness of the etherification reaction. When using triethanolamine, its hydroxyl groups are also involved in the etherification of orthophosphoric acid. The resultant tertiary ammonium, which is a central unit of the synthesized branched amino ethers of orthophosphoric acid, is responsible for incomplete etherification and existence of space-separated ionic pairs in the structure of amino ethers. In the case of triethylamine, the etherification of orthophosphoric acid occurs almost completely to yield polyphosphates. The thermal behavior of ionomeric and nonionomeric polyurethanes is investigated. It is found that, for polyurethanes containing ionic groups, the glass transition temperature is much higher than that of nonionomeric polyurethanes. It is shown that phosphorus-containing nonionomeric polyurethanes possess higher thermal stability in inert atmosphere than phosphorous-containing polyurethane ionomers. The onset temperature of the thermal degradation for nonionomeric polyurethanes decreases considerably with an increase in the content of polyphosphates. Polyurethane ionomers synthesized using phospholipids feature a lower thermal stability than polyurethanes based on amino ethers of orthophosphoric acid.

中文翻译：

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基于正磷酸氨基醚的聚氨酯离聚物的热行为

摘要

研究了三乙醇胺和三乙胺催化的正磷酸在聚（氧化丙二醇）-1000醚化反应中的产物。结果表明，叔胺的性质明显影响醚化反应的完成。当使用三乙醇胺时，其羟基也参与正磷酸的醚化。生成的叔铵是正磷酸合成的支链氨基醚的中心单元，它负责不完全醚化和氨基醚结构中空间分隔的离子对的存在。在三乙胺的情况下，正磷酸的醚化几乎完全发生，从而产生多磷酸盐。研究了离聚物和非离聚物聚氨酯的热行为。发现，对于含有离子基团的聚氨酯，玻璃化转变温度比非离聚物聚氨酯要高得多。结果表明，含磷的非离聚物聚氨酯在惰性气氛中比含磷的聚氨酯离聚物具有更高的热稳定性。非离聚物聚氨酯的热降解起始温度随着多磷酸盐含量的增加而显着降低。使用磷脂合成的聚氨酯离聚物的热稳定性比基于正磷酸的氨基醚的聚氨酯低。结果表明，含磷的非离聚物聚氨酯在惰性气氛中比含磷的聚氨酯离聚物具有更高的热稳定性。非离聚物聚氨酯的热降解起始温度随着多磷酸盐含量的增加而显着降低。使用磷脂合成的聚氨酯离聚物的热稳定性比基于正磷酸的氨基醚的聚氨酯低。结果表明，含磷的非离聚物聚氨酯在惰性气氛中比含磷的聚氨酯离聚物具有更高的热稳定性。非离聚物聚氨酯的热降解起始温度随着多磷酸盐含量的增加而显着降低。使用磷脂合成的聚氨酯离聚物的热稳定性比基于正磷酸的氨基醚的聚氨酯低。