【作者】 蔡国兴；

【导师】 朱亚伟；

【作者基本信息】 苏州大学 ， 纺织化学与染整工程， 2007， 硕士

【摘要】 本文研究以改善真丝纤维的性能为目标,采用甲基丙烯酰胺(MA)、甲基丙烯酸乙酯(EMA)为单体对生丝纤维接枝改性,探讨了各种工艺因素,如单体浓度、引发剂浓度、温度、时间、pH值对增重率的影响,从而得到增重丝纤维的最佳工艺条件。通过对丝纤维的白度、吸湿性、溶解性、染色性(K/S值、染色均匀性)、扫描电子显微镜(SEM)、红外光谱(FTIR)、热性能(TG-DTA)、氨基酸分析等研究,分析不同增重率对生丝增重丝纤维结构和性能的影响,以及生丝增重丝与熟丝增重丝纤维结构和性能的差异。结果表明:对生丝进行接枝改性,可以简化工艺流程,达到增重、改善性能的目的,还可以固着部分丝胶。MA生丝增重丝相对于熟丝吸湿性提高、酸性染料染色的K/S值略有上升、匀染性提高、各种染色牢度变化不明显、热稳定性有所提高;而EMA生丝增重丝吸湿性下降、酸性染料染色的K/S略有上升、匀染性变差、各种染色牢度略有下降、热稳定性有所提升。综合比较表明MA单体较EMA更具有实用价值。更多还原

【Abstract】 The main aim of this study was to improve the properties of silk fiber by using methyl acrylamide (MA) and ethyl methylacrylate (EMA) to graft to raw silk fiber. The effects of the weighting percentage such as monomer concentration, initiator concentration, reaction temperature, reaction time and pH were investigated; we could get an optimal procession condition. Then we studied the effects of the grafted silks with different weighting percentage and the difference of grafting to raw silk and to degummed silk by testing the properties of grafting silk, such as whiteness, moisture regains, dissolvability, dyeing properties (K/S, level dyeing), scan electron microscope, FT-IR, thermal behavior (TG-DTA) and amino acid analysis.The present results showed that: grafting to raw silk could weighten the silk and improve the properties of the silk, fix the sericin as well. Compared to the silk, moisture regains, level dyeing and thermal behavior of raw silk grafted by MA was better. The K/S value increased a little, the fastnesses decreased a little. But the level dyeing of raw silk grafted by EMA declined severely. Compared to the grafted degummed silk, the moisture regains and level dyeing improved a little. All of the results show that using MA to graft silk had better applicable value.更多还原