Modification Of Silk Wrinkles By Supramolecular Modification

"For the first time, the technology of combining supramolecular modification with physical processing has been put forward for the first time, and nano assembly technology has been applied to natural fibers for the first time." For the first time, the two undoubtedly laid a solid foundation for the success of the industrialization of new high performance silk materials and their products. Silk, a natural fiber known as the "Queen of fibers", has become the favorite product of consumers both at home and abroad because of its unparalleled texture and beauty. However, its fragile and easily deformed deficiencies limit the development of silk industry to a certain extent. Improving the added value of silk products and maintaining the vitality of traditional industries has naturally become a bottleneck for silk workers to break through. The Jiangsu Hua Jia holdings group and Soochow University, after years of hard work and close cooperation, have finally solved the problem of silk wrinkles at one stroke.

In order to eliminate silk The problem of wrinkles has been studied at home and abroad. There are basically three kinds of technologies. One is chemical grafting, and the other is the technology developed in China. This technology is similar to forming a polyethylene film on the surface of silk. Although the wrinkles are eliminated, the human skin feels bad and has not been accepted by the international market. This technology is mainly applied to the protection of silk cultural relics. Two, the chemical resin finishing method is like applying 502 glue to the surface of the silk, with a very hard feel. Three is the polymer finishing method, which adopts the combination of chitosan technology and chemical tree finishing, but the most fatal thing is that the silk is easy to yellowing. The first project is completed by Professor Chen Yuyue, who specializes in silk research at Soochow University.

In order to retain the natural properties of silk fiber, the polymer structure inside it should be modified. To achieve the high performance of silk, it is necessary to load it in macromolecule pores. Nanometer material 。 In this process, it is inevitable to take a detour and fail more or less. However, Chen Yuyue and his team are not discouraged. They sum up experience and lessons from the failed experiments, and finally finish the project research and development with four innovations.

According to the introduction, first of all, in the field of silk fiber material processing, the project first proposed and adopted the technology of combining supramolecular modification and physical processing, began to solve the functionalization problem of silk products from silk fibers, did not use any chemical finishing technology, and prepared high performance new silk material with high elasticity and high reversion. The elongation of the silk fiber reached 50% or more, and the elastic recovery angle of the silk yarn was more than 70%. A new breakthrough has been achieved in the anti wrinkle properties of high performance silk new material products. The crease recovery angle of silk fabric is more than 330 degrees, reaching a maximum of 350 degrees.

Secondly, we have independently developed a production equipment with temperature control system, time control system and industrial production of high performance real silk.

Thirdly, self synthesis is right. metal ion The hyperbranched polymer with reduced core shell structure can be used to prepare nano silver with controllable size and stable size. The size of silver nanoparticles can be controlled within 5 nm.

Finally, the nanoscale silver technology was first used in situ production of silk fibers in order to effectively retain the advantage of the original protein of silk products, and achieved the effective and lasting antibacterial function of silk fibers. The antibacterial rate of silk products was more than 99.9%, and the antibacterial rate of 50 times washing was more than 99.5%.

Only a theoretical success is not enough for a good project to adapt to the market, but also has the support of industrialization. In 2004, Chen Yuyue and the Jiangsu Hua Jia holding group of enterprises carried out cooperation in production, teaching and research. From reeling, fabrics to clothing production, Wah has been sticking to the silk industry for 40 years. In order to maintain the vitality of enterprise development and increase the added value, the company attaches great importance to technological innovation.

Together with Soochow University, great achievements have been made in the industrialization of high performance new silk materials and their products, including high elastic pure silk fiber, high elastic bulky elastic silk, high effective long-lasting antibacterial silk fiber and related products. At present, Hua Jia has formed an annual capacity of 240 tons of high-performance silk fabrics, 1 million 500 thousand meters of fabrics and 600 thousand pieces of clothing. Compared with ordinary mulberry silk, the elasticity and bulking of these products increased significantly, and the silk quality was softer. In the acceptance of the project, it was praised by the experts. "The main performance of the product has reached the international leading level, and the processing technology is original."