The Toughening Behavior of the PP/POE Alternating Multilayered Blends under EWF and Impact Tensile Methods

• Published in: Chinese journal of polymer science 2015-10, Vol.33 (10), p.1477-1490
• Main Authors: Li, Chun-hai, Wang, Jian-feng, Guo, Ji-wei, Wu, Hong, Guo, Shao-yun
• Format: Article
• Language: English
• Subjects: Blends; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Dynamic tests; Dynamics; Fracture mechanics; Industrial Chemistry/Chemical Engineering; Polymer blends; Polymer Sciences; Polypropylenes; PP/POE; Tensile stress; Toughening; 乙烯-辛烯共聚物; 共混物; 冲击拉伸; 基本断裂功; 增韧行为; 拉伸应力; 拉伸方法
• ISSN: 0256-7679; 1439-6203
• DOI: 10.1007/s10118-015-1692-1

The multilayered polypropylene （PP） and poly（ethylene-co-octene） （POE） sheets were prepared by the microlayered 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, we, increases obviously. As for the flwp, 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.