酸性染料可染聚酯添加剂的合成及表征

己二酸二甲酯与三胺按等量比在反应釜中进行聚合,在酯交换温度180~220℃,缩聚温度240~270℃,压力40~50Pa条件下即可获得酸性染料可染添加剂。红外分析结果显示,在1 639 cm-1处,存在明显的酰胺键的特征峰,说明反应产物的分子结构中存在酰胺结构,为一种聚酰胺。DSC图谱中,出现明显的熔点及玻璃化温度,证实产物为一种结晶性聚合物。

Synthesis and characterization of the acid-dyeable polyester additive

Polymerization was carried out between dimethyl adipate and triamine with the same mole ratio in the reactor.Acid dyeable additive can be obtained under the conditions of transesterification temperature 180～220 ℃,polycondensation temperature 240～270 ℃,pressure 40～50 Pa.The infrared analysis results showed that at the position of 1 639 cm-1,there was an obvious characterisitc peak of amide bond.It explained that there exists an amide structure in the molecular structure of the reaction product.The additive was a kind of polyamide.In the DSC spectrogram,there was an obvious melt point and glass transition temperature.This proved that the additive was a kind of crystal polymer.