PECH-amine的合成及其在棉织物靛蓝染色中的应用

Synthesis and Application of PECH-amine in Indigo Dyeing of Cotton Fabrics

为提高棉织物靛蓝染料的上染率,缩短染色工艺流程,对阳离子改性剂聚环氧氯丙烷胺化物(PECH-a-mine)的制备工艺进行了研究。采用FTIR、1 HNMR对PECH-amine的结构进行了表征,GPC测定其分子量分布,并对经PECH-amine改性棉织物的染色深度K/S值和色牢度进行测试。实验结果表明:合成PECH-amine的最佳反应条件为:m(聚环氧氯丙烷)∶m(二甲胺)=1∶2,温度90℃,时间8h。PECH-amine改性棉织物K/S值高达25.06,而相同染色条件下未改性棉织物的K/S值仅为16.60。染色织物的耐洗牢度、干摩擦牢度和湿摩擦牢度良好。

To improve the dye-uptake of indigo dye of cotton fabrics and shorten the technological process of dyeing, this paper studies the preparation technology of cation modifying agent PECH-amine, characterizes the structure of PECH-amine with FTIR and 1HNMR, measures its molecular weight distribution with GPC and tests dyeing depth K/S value and color fastness of cotton fabrics modified by PECHamine. The experimental result shows that the optimal reaction conditions of PECH-amine synthesis are m （PECH） ~ m（dimethylamine）=1 ： 2, temperature 90℃ and time 8 h. K/S value of cotton fabrics modified by PECH-amine reaches 25.06, while that of unmodified cotton fabrics under the same dyeing condition is only 16.60. The dyed fabric has a good fastness to washing, fastness to dry rubbing and fastness to wet rubbing.