Novel Method to Toughen Polypropylene by Uniaxial Compression Processing
Based on the orientation of molecule chain in fibers, it will urge a rapid increase in mechanical properties. Nevertheless, block materials mainly gain rise of mechanical properties by blend or composite today, it is hardly proposed on self-toughening materials by optimizing the microstructure because of a lack of relations between the performance and the microstructure in block materials. In this paper, a toughening PP was gained through small deformation of spherulite, processed by uniaxial compression. A series of measurements were applied, including impact test and polarizing optical microscope (POM). The results show that the impact properties of polypropylene (PP) have a rapid rise. POM suggests that the spherulite has deformed into ellipsoid even belt along the orientation of sample of PP, which plays an important role in toughening.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
M. L. Jiao et al., "Novel Method to Toughen Polypropylene by Uniaxial Compression Processing", Advanced Materials Research, Vols. 239-242, pp. 3249-3252, 2011