Abstract
The multilayered polypropylene (PP) and poly(ethylene-co-octene) (POE) sheets were prepared by the micro-layered co-extrusion system. The essential work of fracture (EWF) and the impact tensile methods have been successfully used to evaluate the toughening behaviors of the PP/POE multilayered blends under quasi-static and dynamic uniaxial tensile stress, respectively. The experimental results indicate that the multilayered structure plays a key role in the toughening behaviors. On increasing the layer number of the multilayered blends, the specific essential work of fracture, w e, increases obviously. As for the βw p, there is no obvious variation in the multilayered blends with low POE content (6.79%), however, obvious enhancement is observed with increasing the layer number of the high POE content multilayered blends (16.57%). Compared with the conventional blends, the multilayered blends with 6.79% POE content are effective to increase the value of we. Additionally, the multilayered blends with high layer numbers present absolute advantage in improving the impact tensile values.
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This work was financially supported by the National Natural Science Foundation of China (Nos. 51273132, 51227802 and 51121001) and Program for New Century Excellent Talents in Universities (No. NCET-13-0392).
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Li, Ch., Wang, Jf., Guo, Jw. et al. The toughening behavior of the PP/POE alternating multilayered blends under EWF and impact tensile methods. Chin J Polym Sci 33, 1477–1490 (2015). https://doi.org/10.1007/s10118-015-1692-1
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DOI: https://doi.org/10.1007/s10118-015-1692-1