| 초록 |
For high energy absorption, it needs to improve stiffness and ductility of polymer. The common techniques to enhance stiffness are increasing chain alignment, increasing crystallinity, or increasing the glass-transition temperature. These approaches always results in a sacrifice in ductility. Strategies for enhancing ductility include the reverse of the techniques for increasing stiffness. So, it is very difficult that improvements to the mechanical properties of polymers avoid the stiffness/ductility tradeoff. Recently, barbed polymer were proposed to avoid this tradeoff, of which mechanical properties was enhanced dramatically because of interlocking steric interactions between adjacent chains during the deformation of polymers through the "threading and interlocking" mechanism. But studies of this topic are very rare yet. In this work, we present synthesis of barbed polymer and effect factors for the "threading and interlocking" mechanism. |
