Acylated and hydroxylated polyamides derived from L-tartaric acid
Acylated and hydroxylated polyamides derived from L-tartaric acid
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DOI：
10.1016/j.polymer.2005.02.046
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发表时间：
2005-04-15
期刊：
影响因子：
4.6
通讯作者：
Muñoz-Guerra, S
中科院分区：
文献类型：
--
作者：
Alla, A;Oxelbark, J;Muñoz-Guerra, S
以1，6-己二胺和2，3-二-O-酰化L-酒石酸的活性酯为原料，通过溶液缩聚反应合成了一系列聚酰胺6，4。O-烷酰基酯和O-苯甲酰基酯均用作羟基保护基。发现所得酰化聚酒石酸酰胺是半结晶聚合物，其T-m在100至200 ℃之间，T-g略高于100 ℃。控制酯侧基的水解导致制备具有不同含量的游离羟基的聚（反式L-酒石酰胺）。这些聚酰胺仍然是结晶的，但它们的性质与它们的母体酰化聚合物所显示的性质有很大不同。(c)2005爱思唯尔有限公司保留所有权利。
A series of polyamides 6,4 were prepared from 1,6-hexanediamine and active esters of 2,3-di-O-acylated L-tartaric acid by polycondensation in solution. Both O-alkoyl and O-benzoyl esters were used as hydroxyl protecting groups. The resulting acylated polytartaramides were found to be semicrystalline polymers with T-m between 100 and 200 degrees C and T-g slightly above 100 degrees C. Controlled hydrolysis of the ester side group led to the preparation of poly(hexamethylene L-tartaramide)s with different content in free hydroxyl groups. These polyamides continue being crystalline but their properties largely differ from those displayed by their parent acylated polymers. (c) 2005 Elsevier Ltd. All rights reserved.