Modification Of B.mori Silk Fiber And Fabric Pretreated With HBP-NH₂

For improving the B.mori silk performance and enhancing the silk product attachment value, the B.mori silk was pretreated with an amino-terminated hyper branched polymer(HBP-NH₂) absolution. The feasibility of silk yarn modified with HBP—NH₂ was investigated, which provided theoretical base for modification of B.mori silk fiber and fabric.In the paper, it was used HBP-NH₂ to pre-treat silk fiber. The structures of Bombyx mori silk fiber treated with HBP-NH₂ was studied by Scanning electron microscope(SEM) ,Fourier transform infrared micro spectroscopy (FT-IR), X-ray diffraction (XRD) and thermal analysis. It was found that the interior structure of the pretreated silk fiber tended to formβ-structure, and the comparative crystallinity and thermal stability increased at the same time.The silk fabric pretreated with HBP-NH₂ absolution has good antibacterial performance against the staphylococcus aureus and bacillus coli. In addition, the breaking strenth and anti-wrinkle ability of treated fabric have enhanced and the moisture absorption and water absorption has also improved after modification.After dyeing the silk fabric pretreated with HBP—NH₂ absolution, the fabric was achieved salt-free and low-salt dyeing with reactive dyes. The dyeing property has improved. The color fastness and leveling properties was also satisfied. The fabric pretreated with HBP-NH₂ was dyeing at lower temperature and neutral dye liquor when dyeing with acid dyes. And the dyeing effect was quite well.The B. mori silk fabric was modified with HBP-NH₂ successfully. When applying the material to B. mori silk fiber, the mechanical performances of the silk fibers improved, as well as thermal properties. The dyeing properties were also content. And the aim of increasing the anti-bacteria performance and anti-wrinkle-resistant performance of B. mori silk was achieved. This paper offered a new for developing novel silk materials.