无盐染色助剂HBP-ECH的制备及在蚕丝织物活性染料染色中的应用

Preparation of a Salt-free Dyeing Auxiliary Agent HBP-ECH and Its Application in Silk Fabric Dyeing with Reactive Dyes

将环氧氯丙烷(ECH)与端氨基超支化聚合物(HBP-NH2)进行加成反应,制备出表面含有氯甲基的超支化聚合物(HBP-ECH),并应用于蚕丝织物的活性染料无盐染色。优化HBP-ECH的合成工艺条件为:端氨基超支化聚合物与环氧氯丙烷的摩尔比1∶10,氢氧化钠与环氧氯丙烷的摩尔比1∶6,反应温度30℃,反应时间4 h。通过红外光谱分析证明HBP-ECH表面含有部分氯甲基。经HBP-ECH改性后的蚕丝织物用活性染料进行无盐染色,可达到未改性蚕丝织物常规染色的K/S值,且染色牢度较好,色光变化小。

Hyperbranched polymer containing chloromethyl group （HBP-ECH） on the surface was synthesized by addition reaction with epoxy chloropropane （ECH） and hyperbranched poly amide-amine （HBP-NH2）, and was subsequently applied in silk fabric salt-free dyeing with reactive dyes. The optimum technological condition for HBP-ECH synthesis is as follows, molar ratio of hyperbranched poly amide-amine to epoxy chloropropane 1：10, molar ratio of sodium hydrate to epoxy chloropropane is 1 ： 6, reaction temperature 30 ;C, and reaction time 4 h. Infrared spectrometric analysis verified the existence of chloromethyl group on surface of HBP-ECH. The silk fabric modified by HBP-ECH was subsequently dyed with salt-free reactive dye. The results showed that the dyed silk fabric presented K/S value similar to the unmodified silk fabric after conventional dyeing, good color fastness, and slight change in shade.