Spherulite structure, deformation morphology, and mechanical properties of isotactic polypropylene fibers

2007 ◽  
Vol 20 (1) ◽  
pp. 253-284 ◽  
Author(s):  
Robert J. Samuels
Keyword(s):  
Mechanical Properties ◽  
Isotactic Polypropylene ◽  
Polypropylene Fibers ◽  
Structure Deformation ◽  
Morphology And Mechanical Properties

Morphology and mechanical properties of transcrystalline isotactic polypropylene

e-Polymers ◽  
2003 ◽  
Vol 3 (1) ◽  
Author(s):  
Koh-hei Nitta ◽  
Yoshikazu Yamamoto
Keyword(s):  
Mechanical Properties ◽  
Isotactic Polypropylene ◽  
Mechanical Energy ◽  
Supermolecular Structure ◽  
The Other ◽  
Morphological Properties ◽  
Spherulitic Morphology ◽  
Other Hand ◽  
Morphology And Mechanical Properties ◽  
Yielding Process

Abstract We examined mechanical and morphological properties of fully transcrystalline polypropylene grown from the surface of poly(tetrafluoroethylene) sheets. Comparison of mechanical properties between transcrystalline and spherulitic polypropylenes demonstrated that Young’s modulus is dependent on the crystallinity and independent of the supermolecular structure. On the other hand, the mechanical yielding process was predominantly affected by the supermolecular structure, and the mechanical energy required for yielding of transcrystalline sheets was greater than that of the spherulitic morphology. In addition, it was found that mechanical necking is required for the alignment of lamellae in the stretching direction. This means that the unfolding process of lamellae orienting in the stretching direction is associated with necking and ductility.

Morphology and mechanical properties of poly (phenylene sulfide)/isotactic polypropylene in situ microfibrillar blends

2005 ◽  
Vol 45 (9) ◽  
pp. 1303-1311 ◽  
Author(s):  
Hui Quan ◽  
Gan-Ji Zhong ◽  
Zhong-Ming Li ◽  
Ming-Bo Yang ◽  
Bang-Hu Xie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Isotactic Polypropylene ◽  
Morphology And Mechanical Properties ◽  
Phenylene Sulfide

Morphology and Mechanical Properties of the Mesomorphic Form of Isotactic Polypropylene in Stereodefective Polypropylene

2013 ◽  
Vol 46 (13) ◽  
pp. 5202-5214 ◽  
Author(s):  
Claudio De Rosa ◽  
Finizia Auriemma ◽  
Rocco Di Girolamo ◽  
Odda Ruiz de Ballesteros ◽  
Martina Pepe ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Isotactic Polypropylene ◽  
Morphology And Mechanical Properties
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