一种树枝状侧基型聚合物的合成及其溶液性质研究

Synthesis Of A Dendron-Jacked Linear Polymer And Its Solution Properties Evaluation

摘要:

本文以乙二胺、丙烯酸甲酯、丙烯酰胺为原料，通过丙烯酰胺及丙烯酸甲酯自由基聚合反应合成主链，其次通过乙二胺与丙烯酸甲酯交替发生的酰胺化反应以及迈克尔加成反应首次将树枝状侧基引入了聚丙烯酰胺类聚合物，制备了一种新型的带树枝状侧基的聚合物，并利用红外光谱进行表征，确定了最佳合成条件：反应温度30℃，反应时间24-48h，反应物摩尔比1:1。对聚合物的水溶液性质进行了评价。结果表明，合成的带树枝状侧基的聚合物的增粘、抗温、抗盐性质较合成前聚合物都有较大的提高，达到了分子结构设计的预期效果。

Abstract:

A Dendron-jacketed linear polymer is synthesised, ethylenediamine, methacrylate, acrylamide was used in two steps reactions. As the first step, the main chain was prepared by the free radical polymerization reaction of acrylamide and methacrylate, as the second step, the Dendritic side group was introduced to the main chain by the amidation and Michael addition reaction of Ethylenediamine and methacrylate ,thus synthesis a new type Dendron-jacketed linear polymer and the product was characterized by FTIR, the optimized Synthesis conditions as below: reaction temperature 30℃, reaction time 24~48h,reactant malar ratio 1:1. The water-solubility of this product is also evaluated. The result shows that the Dendron-jacketed linear polymer has a remarkable improvement on the anchoring, anti-salts and anti-temperature properties compare to the non-jacketed linear polymer, the molecular structure design achieved the desired result.