Morphology and mechanical properties of melt drawn chopped UHMWPE fiber/HDPE blends

Autor:	Boris Larin, Hannah Harel, A. Y. Feldman, Gad Marom
Rok vydání:	2006
Předmět:	Materials science Polymers and Plastics Scanning electron microscope General Chemistry law.invention Crystallinity law Polymer chemistry Volume fraction Materials Chemistry Melting point Extrusion Fiber High-density polyethylene Crystallization Composite material
Zdroj:	Polymer Engineering & Science. 46:807-811
ISSN:	1548-2634 0032-3888
Popis:	Blends of ultrahigh molecular weight polyethylene (UHMWPE) chopped fibers with high density polyethylene (HDPE) were prepared by melt mixing extrusion, followed by melt drawing. The combined effect of composition and flow on the morphology was investigated by microbeam synchrotron X-ray diffraction and high resolution scanning electron microscopy. Apparently in the drawn blends, the presence of fibers resulted in a higher degree of orientated morphology and—as revealed by differential scanning calorimetry—higher degrees of crystallinity and melting points. Significant improvement of mechanical properties was observed with increase of the fiber volume fraction. These results indicate that the oriented arrays of immiscible UHMWPE domains aligned in the flow direction, joined by fiber-induced crystallization of the surrounding HDPE matrix, and provide strong reinforcing effect. POLYM. ENG. SCI., 46:807–811, 2006. © 2006 Society of Plastics Engineers
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ccee84bd90e9ea010e0be3a42a4e4574 https://doi.org/10.1002/pen.20524 Zobrazit plný text záznamu Plný text