This paper focuses on the energetic evaluation of the single fiber pull-out test (SFPT) using regenerated cellulose fibers (RCF) in a PP matrix with a varying MAPP content. Glass fibers were used for reference purposes. By means of the SFPT the interfacial shear strength (IFFS), the critical fiber length (l_c), the consumed energy of a fiber pull-out and the consumed energy of a fiber rupture were determined. Results were related to the fiber length distribution in injection molded specimens. It was shown that theoretically more fiber ruptures appear in composites with RCF than with GF. But RCF composites offer a larger number of long fibers, slightly underneath the critical fiber length, consuming a high amount of energy by being pulled out at a composite failure. The consumed energy of a fiber pull-out per length was increased by using MAPP but simultaneously the critical fiber length was significantly reduced.

本文着重于在具有变化的MAPP含量的PP基质中使用再生纤维素纤维（RCF）对单纤维拉出试验（SFPT）进行能量评估。玻璃纤维用于参考目的。借助SFPT，界面剪切强度（IFFS），临界纤维长度（l _c），确定了纤维拉出所消耗的能量和纤维断裂所消耗的能量。结果与注塑样品中的纤维长度分布有关。结果表明，与RGF相比，RCF的复合材料中出现的纤维断裂更多。但是，RCF复合材料可提供大量的长纤维，位于临界纤维长度的下方，通过在复合材料失效时被拉出，会消耗大量能量。通过使用MAPP可以增加每段长度光纤拉出所消耗的能量，但同时，临界光纤长度也会显着减少。