he morphological characteristic such as layer structure

layer thickness and the content as well as the aspect ratio of the in-situ formed liquid crystalline polymer fibers by injection molding was investigated and quantitatively measured. According to the inhomogeneous distribution of the fibers

a three-layer-model was set up. It's very difficult to determine the mechanical properties of the LCP fibers becausethey were in-situ formed and always embedded in the matrix. In this paper

amicromechanical model based on Cox model has been established to determine the Young's modulus of the fibers. It has been shown that all the shear induced in-situ fibers seem to have same Young's modulus as material related constant

in-dependent upon the processing conditions

even though the different processing con-ditions result in significant change of the fiber content and the aspect ratio. There-fore

for in-situ formation of the LCP fibers

shear condition may only influence the geometric structure

but not the mechanical characteristics.