Formation Of Microporous Mulberry Silk And Its Property

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.