Effect of Shear on the Crystallization Behavior of Glass Bead Filled Polypropylene

Chem. J. Chinese Universities

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Effect of Shear on the Crystallization Behavior of Glass Bead Filled Polypropylene

ZHAO Gui-Yan^1,2, WANG Ying^1,2, MEN Yong-Feng¹, JIANG Wei¹*

1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received:2007-09-29 Revised:1900-01-01 Online:2008-04-10 Published:2008-04-10
Contact: JIANG Wei

Abstract

Abstract: Linkam CSS450 optical shearing stage, wide-angle X-ray diffraction(WAXD) and small-angle X-ray scattering(SAXS) were used to investigate the effect of shear on crystal structure and crystallization morphology of the glass bead filled polypropylene(PP). The results indicate that the glass bead worked as nucleating agent for the glass bead filled PP, compared with pure PP it restrained the formation of β-crystal after shear treatment. When the mean size of glass bead is smaller(4 μm) shear rate had less effect on the formation of β-crystal of PP obviously. However, when the mean size of glass bead is larger(35 μm), it was found that 20 s^-1 is an optimal shear rate for the formation of β-crystal. Both shear and glass bead addition could induce the orientation of the lamella of the glass bead filled PP. The higher the shear rate and the bigger the glass bead, the higher the orientation of the lamella was.

Key words: Polypropylene, Glass bead, Shear, β-Crystal

CLC Number:

O631

TrendMD:

ZHAO Gui-Yan^1,2, WANG Ying^1,2, MEN Yong-Feng¹, JIANG Wei¹*. Effect of Shear on the Crystallization Behavior of Glass Bead Filled Polypropylene[J]. Chem. J. Chinese Universities, doi: .

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Effect of Shear on the Crystallization Behavior of Glass Bead Filled Polypropylene

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