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http://dx.doi.org/10.5762/KAIS.2013.14.6.3108

Crystallization Behavior and Mechanical Properties of High Density Polyethylene/metallocene catalyzed Poly(ethylene-co-octene) Blends  

Son, Younggon (Advanced Materials Science and Engineering, Kongju National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.6, 2013 , pp. 3108-3113 More about this Journal
Abstract
Compatibility between mLLDPE and HDPE was investigated by observing the crystallization behavior and mechanical properties of their blends. HDPE and mLLDPE blends were prepared by a melt-blending with compositions of 100/0, 80/20, 60/40, 40/60/ 20/80 and 0/100. Four different mLLDPEs containing various octene contents (4.1, 6.8, 9.8 및 12.5 mol.%) were investigated. The melting temperature and crystallization peak temperature of the blends were measured by DSC and the mechanical properties were measured in an universal testing machine. By observation that the melting and crystallization peak temperatures of one component were affected by its counterparts, it was revealed that HDPE and mLLDPE are miscible or at leat partially miscible at molten state. It was also found that the crystalline phase of mLLDPE contains HDPE crystals. However. it was not clear that mLLDPE was cocrystalized in the crystalline phase of HDPE. By various investigation with DSC and mechanical properties, it was concluded that the compatibility between mLLDPE and HDPE decreases with the octene content in the mLLDPE.
Keywords
Metallocene catalyzed LLDPE; HDPE; Miscibility; Crystallization behavior;
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