Structure Of Sericin Research Articles

丝胶的触变性研究

丝胶是一种水溶性球状蛋白，是蚕丝的主要成分之一。一直以来，丝胶的药用价值、食用价值被人们所熟知，而丝胶凝胶的触变性却很少有学者研究。将丝胶溶液置于常温条件下时，丝胶溶液形成凝胶。此时，对丝胶溶液施加一定剪切力，丝胶凝胶出现可逆溶胶现象，表现出触变性。本文从丝胶凝胶临界浓度、触变性表征、结构变化及截面形态研究了高温高压制备的丝胶的触变性。结果表明，高温高压条件下制备的丝胶溶液常温条件下凝胶临界浓度为0.3%；丝胶凝胶触变作用前后不发生聚集态结构变化；丝胶的再凝胶过程仍与丝胶含固量和温度有关。 Sericin has been proved to be a nature water soluble globular protein and is one of the main com- ponents of silk. As is known for its culinary and medical properties all the time, thixotropy property of the sericin has never been studied. When placed at room temperature for several hours, sericin solution forms gel. Then, applied a sequential set of shearing forces into the sericin gel, it exhibits reversible gel-sol changes and turns out to be thixotropy. The paper describes the critical gel concentration of sericin solutions, thixotropy characterization and structure. The result indicated that sericin prepared from silk cocoon under high pressure and high temperature can form gel even diluted at concentration 0.3 wt%. The structure of sericin didn’t change after shear action. The regelation process is dependent on concentration and temperature.

High Functional PET Sericin Composite Fabric

Though poly(ethyleneteraphthalate)(PET) fabrics have high initial modulus, outstanding creasability and wash-well character, but its hydrophilicity and biocompatibility are very poor. In this paper, the PET fabric was encased sucrose ester at high pressure and high temperature to endue it enough hydroxyl to grafting protein. The sericin was grafted on PET fabric by sucrose eater glycidyl ether (SEGE). The FT-IR spectra showed that sericin was grafted on PET fabric, and the structure of sericin was random coil conformation. X-ray diffraction spectra showed the structure of PET fiber did not changed. DSC showed the thermostability increased a little. After the PET fabric grafted with sericin, the hydrophilicity of PET sericin composite fabric was improved greatly, the cockle elasticity kept well, and the broken strength in creased a little. Certainly, the whiteness and air permeability decreased a little. The PET sericin composite fabric was high functional.

Relationship between adhesive properties and structure of sericin in cocoon filaments

Relationship between adhesive properties and structure of sericin in cocoon filaments