【作者】 苏兆凤；

【导师】 左保齐；

【作者基本信息】 苏州大学 ， 纺织工程， 2011， 硕士

【摘要】 桑蚕丝纤维的孔穴结构对蚕丝的物理化学性质有着重要的影响,特别是对蚕丝纤维的吸湿性、染色性及整理剂的吸附性有着直接或间接的影响。本论文采用超低温冷冻,真空干燥桑蚕丝纤维,利用冰晶的升华生成蚕丝的微孔结构。本文用氮气吸附法表征了蚕丝纤维的中孔孔穴结构,并对蚕丝的孔穴结构进行了大胆的猜测:经过脱胶和清洗后桑蚕丝的孔穴结构为四面开放的尖劈形毛细孔或圆锥形和四面开放的尖劈形毛细孔的混合结构。经过超低温冷冻真空干燥处理后,蚕丝孔穴结构模型没有改变,孔穴有增多均匀趋势。并用压汞法对蚕丝的大孔孔穴结构进行了补充。经过处理后,桑蚕丝的热稳定性有一定提高,由于微孔的存在,力学性能轻微的下降,处理后表面能等有了一定的提高。本文测试处理前后桑蚕丝纤维的抗菌性能,桑蚕丝纤维与小鼠成纤维细胞的生物相容性,将表面能高低与微生物黏附理论结合起来,尝试用表面能解释微生物初始黏附,分析抗菌性能的改变及生物相容性的改善。更多还原

【Abstract】 The micropore structure in Mulberry silk fiber has an important influence on chemical and physical properties,especially for the hygroscopicity,Dyeability and finishing agent adsorption. In this dissertation,super-low-temperature frozen- vacuum drying technique was used to produce microvoid by the sublimation of ice crystals.In this paper,the medium pore of silk fiber is characterized by nitrogen adsorption method,and bold guesswork is given about pore structure in silk fiber:it belongs to a four open wedge-shape or a hybrid structure of that and and a cone shape. After degumming and cleaning process. After ultra-low temperature freeze-drying treatment, silk hole model has not changed, there is a growing cavity uniform trend. And mercury intrusion method is a complement for macroporous structure of silk. After treatment, the thermal stability of the silk has been improved, due to the presence of micropores, a slight decrease in the mechanical properties, while surface energy increase lightly.The changes before and after treatment about inantibacterial properties and the biocompatibility of mouse fibroblast cells was examined.the surface energy and Microbial adhesion theory was combined, it attempts to explain the relationship between initial microbial adhesion and surface energy;to analyze the convert of antibacterial properties and improvements in biocompatibility.更多还原