結晶性ポリマの寸法依存性に関する実験方法の改良および分子鎖塑性モデルへの反映

抄録

Crystalline polymers may have some size effects that show different deformation responses depending on size of crystalline phase with respect to that of specimen. In the previous report, the cooling method for solidification of polypropylene from a molten state has some problems. In the present report, the authors attempt to control the crystalline phase size precisely by improving the cooling method. Furthermore, conducting some tensile tests on a polypropylene specimen, the effect of difference in crystal size on deformation response is investigated. In addition, it is indicated that a shape of crystalline phase should be changed in the unit cell of homogenization method.