Citation: Dong Liang, Li-juan Zhou, Qin Zhang, Feng Chen, Ke Wang, Hua Deng, Qiang Fu. MORPHOLOGY AND MECHANICAL PROPERTIES OF POLY(ETHYLENEOCTENE) COPOLYMERS OBTAINED BY DYNAMIC PACKING INJECTION MOLDING[J]. Chinese Journal of Polymer Science, ;2012, 30(4): 603-612. doi: 10.1007/s10118-012-1159-6 shu

MORPHOLOGY AND MECHANICAL PROPERTIES OF POLY(ETHYLENEOCTENE) COPOLYMERS OBTAINED BY DYNAMIC PACKING INJECTION MOLDING

Received Date: 13 January 2012
Revised Date: 13 February 2012

Fund Project: This work was financially supported by the special funds for Major State Basic Research Projects of China (No. 2011CB606006) and Program for the New-Century Excellent Talents of Ministry of Education of China (NCET-10- 0580).

The morphology and mechanical properties of poly(ethylene-octene) copolymers (POE) obtained by dynamic packing injection molding were investigated by mechanical tests, differential scanning calorimetry (DSC), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The mechanical tests found that only POE with low octene content and high molecular weight show apparent response for external shear field. Further investigation has been done by DSC, FT-IR, and SEM in order to make clear the reason of that phenomenon. Finally, the hypothetical mechanism of POE microstructure formation under shear field has been proposed. For POE with low octene content and high molecular weight, orientation degree and mechanical properties both increase substantially under shear field. For POE with low octene content and low molecular weight, orientation degree and crystallinity increase under shear field, but it is not dramatically benefit for the mechanical properties. For POE with high octene content and high molecular weight, the shear field has little effect on the morphology and mechanical properties.
- Poly(ethylene-octene)
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