Material design of polymer composites with nanofibers

研究了含有不同柔韧性纳米纤维的聚合物熔体的流变性。首次发现，由于纤维间的相互作用，少量的柔性纳米纤维在拉伸粘度方面提供了显着的应变硬化。此外，还研究了纳米纤维在不相容聚合物共混物中的局域化，发现界面张力决定了纳米纤维的局域化。这一现象也适用于聚合物的表面改性。

Rheological properties of polymer melts containing nanofibers with various flexibilities are studied. It is firstly found that a small amount of flexible nanofibers provides marked strain-hardening in elongational viscosity owing to interfibrous interaction. Moreover,localization of nanofibers in immiscible polymer blends is studied and found to be determined by the interfacial tension. The phenomenon can be applicable to the surface-modification of a polymer.