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Title: Orientation relationship and mechanical properties of rolled polypropylene sheets
Authors: Wu, SZ
Lee, WB 
Keywords: Orientation Structure
Rolled Polypropylene
Wide-Angle X-Ray Diffraction
Issue Date: 2000
Publisher: Scientific.Net
Source: Key engineering materials, 2000, no. 180 PART 1, p. 357-362 How to cite?
Journal: Key engineering materials 
Abstract: The orientation structure in rolled polypropylene was observed by scanning electron microscopy (SEM). The tensile properties of rolled polypropylene sheets with different reduction ratios in thickness were monitored. Wide-angle X-ray diffraction (WAXD) measurements of the orientation distribution of (hkl) crystal planes gave values of the even order 〈Pn(cosχ)〉c coefficients of the Legendre polynomial series, which characterize the c-axis or orientation distribution of the molecular chains. According to the non-linear viscoelastic theory for large deformation of polyolefine, the coefficient C200 in the stress-strain relationship was related to the aligned polymer chain along the elongation direction. A linear relationship is found between the modulus E and the orientation distribution q(χ) and is verified by the experiment results.
ISSN: 1013-9826
EISSN: 1662-9795
Appears in Collections:Conference Paper

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