Study on Structural Deformation and Performance of Polypropylene Spherulite Prepared by Uniaxial Compression Processing

Abstract:

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Mechanical properties have close relation with microstructure. Based on orientation of the molecule chain in fiber, they show a rapid increase in tensile properties. Nevertheless, block materials mainly gain rise of mechanical properties by blend or composite, it is hardly proposed on the self-reinforced materials by optimizing the microstructure. In this paper, a strengthening of PP was gained by uniaxial compression through small deformation of spherulite. A series of measurements were applied, including tensile test, polarizing optical microscope (POM) and differential scanning calorimeter (DSC). The results show that the tensile properties of polypropylene (PP) have a rapid rise. POM suggestes that the spherulite has deformed into ellipsoid even belt along the orientation of sample of PP, which plays an important role in self-reinforcing of PP. And the initial melt point displayed by DSC slightly decreases because of the partial ruptures of crystal phase.

Info:

Periodical:

Advanced Materials Research (Volumes 175-176)

Main Theme:

Edited by:

Lun Bai and Guo-Qiang Chen

Pages:

308-311

DOI:

10.4028/www.scientific.net/AMR.175-176.308

Citation:

M. L. Jiao et al., "Study on Structural Deformation and Performance of Polypropylene Spherulite Prepared by Uniaxial Compression Processing", Advanced Materials Research, Vols. 175-176, pp. 308-311, 2011

Online since:

January 2011

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Price:

$35.00

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