Effect of Drawing Process on the Structure and Properties of PBS/Silk Sericin Blend Fibers
In order to improve the mechanical properties of the fiber, the poly (butylene succinate) (PBS) /silk sericin ( SS) blend fibers were treated by drawing process. The effects of the drawing ratio and drawing temperature on the mor-phological structure, chemical structure, thermal properties, mechanical properties and degradation properties of the fi-bers were studied. The results showed that with the increase of the drawing ratio, the surface of the fibers showed obvi-ous streaks along the stretching direction, indicating the relative displacement of PBS and silk sericin. With the increase of the drawing temperature, the streaks on the surface of the fibers decreased, indicating that the in-crease in temperature enhances the movement of PBS molecular chains, keeping the fibers in a dense structure. The mechanical properties and crystallinity of the blend fi-bers increased first and then decreased with the increase of the drawing ratio and drawing temperature. When the drawing ratio was 4 times and the drawing temperature was 75 ℃, the crystallinity of the fibers could reach 61. 30％. Under this condition, the fiber breaking strength was 2. 0 cN/dtex, which was close to the mechanical strength of viscose fibers and could meet the requirements of vari-ous textile processing methods such as spinning and non-wovens.
Poly (butylene succinate)Silk sericinBlend fibersDrawing ratioDrawing temperature
万方数据
维普
