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Effects of different colorants on morphological development of sheared isotactic polypropylene: A study using synchrotron wide-angle x-ray scattering.
- Source :
- Journal of Applied Physics; Jun2008, Vol. 103 Issue 12, p124906, 7p, 4 Diagrams, 5 Graphs
- Publication Year :
- 2008
-
Abstract
- Sheared isotactic polypropylene (iPP) forms a special crystalline assembly called branched shish kebab. The effects of two colorants, Cu-phthalocyanine and ultramarine blue, on the branched shish-kebab structure have been investigated by using synchrotron wide-angle x-ray scattering. The effects of the colorants on the morphological distributions of iPP are well constructed through the shear field or temperature gradient, including crystallinity, molecular orientation, fraction of lamellae, and thickness of crystalline lamellae. It is found that the Cu-phthalocyanine can significantly affect the morphological development of sheared iPP but the ultramarine blue cannot. In the presence of Cu-phthalocyanine, the degree of crystallinity is increased, the molecular orientation is enhanced, the more a<superscript>*</superscript>-axis-oriented components form, and the crystalline lamellae are thickened. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYPROPYLENE
SYNCHROTRONS
THERMOPLASTICS
X-ray scattering
CRYSTALLOGRAPHY
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 103
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 32969873
- Full Text :
- https://doi.org/10.1063/1.2931009