The morphology evolution and Size control of polypropylene nanofibers
Polyproplylene (PP) nanofibers were prepared by melt-blending extrusion of cellulose acetate butyrate (CAB) and PP and subsequent removal of the CAB matrix. The sizes and distributions of nanofibers were controlled by morphology development. The processing conditions for the CAB/PP hybrids in a twin-screw extruder were studied with an emphasis on the effects of different morphology evolution models, component ratios, and stretching rates. The extruder was opened and the samples were taken from along the barrel. CAB was removed by immersing the samples in acetone for 6 h and the morphology and size of the selected samples were studied by scanning electron microscopy. The results show that the dispersed phase has two different development models of morphology during the initial stage due to the viscoelastic, interface and relaxation properties of the various systems. The final dimensions of the nanofibers are largely determined by the ways of morphology development in the process of blending extrusion.
CAO Zhenbo XIAO Ru
State Key Lab.For Modification of Chemical Fibers and Polymer Materials, College of Materials Sc State Key Lab.for Modification of Chemical Fibers and Polymer Materials, College of Materials Sc
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
1260-1262
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）