Furukawa Electric Review No.51Crystal Orientation Analysis of Injection-Molded Polypropylene by Micro-Beam Wide Angle X-ray Diffraction

Yukihiro Ikura, Suzune Ito, Hirokazu Sasaki

Toward the injection molding specimens which are made of Polypropylene Grafted with Maleic Anhydride melt-blended in polypropylene, we performed the analysis of the crystal orientation in the local region of the specimens with the micro-beam wide angle X-ray diffraction measurement which has a high resolution of Super Photon ring-8 GeV (SPring-8) and is considered with the physical property. As a result, the skin layer of the molding becomes thinner with the influence of the fluidity variation caused by an increase of an additive amount of the polypropylene grafted with maleic anhydride into the polypropylene, however it is found that this addition doesn’t have considerable effects on the tensile strength and modulus of the molding.