Preparation Of Sericin Proteinic Cotton Fiber And Its Performance

In order to achieve the protein property of cotton fiber, combinative ability between dialdehyde cellulose cotton fiber and sericin was studied in this paper. The sericin proteinic cotton fiber is expected to be obtained by treating the oxidized cotton fiber with sericin solution.Cotton fiber was selectively oxidized with NaIO4 and then the oxidized cotton fiber was treated with sericin solution. The preparation principle and feasibility of sericin proteinic cotton fiber was proved by FT-IR. And effect of different factors, such as oxidized degree, concentration of sericin solution, pH value, treating time and temperature, on the weight and the tensile properties of cotton yarns/fabric were discussed in this paper. The morphology and structure of sericin proteinic cotton fiber were analyzed by means of SEM, XRD, TG and DSC. The wrinkle resistance of cotton fabrics coated with sericin under different processing conditions was also studied, as well as their hydroscopicity, colourability and whiteness.The results show that sericin could be directly coated onto the oxidized cotton fiber without any other reagent and a covalence formed between amido and aldehyde group. After treating with sericin solution, the thermal stability of the oxidized cotton fiber improved and the surface became smooth, but the crystallinity changed little. The weight gain of oxidized cotton treated by sericin solution was also affected by the above mentioned factors, but their mechanical properties changed little. Sericin proteinic cotton fabrics showed better wrinkle resistance and hydroscopicity than original cotton fabric, meanwhile their colourability and whiteness changed little.