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http://dx.doi.org/10.12772/TSE.2014.51.070

Studies on Molecular Structure Changes in Polyethylene/Polypropylene Sheath-Core Monofilament  

Seo, Young Ho (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Lim, Young Min (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Oh, Tae Hwan (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Han, Sung Soo (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Nam, Young Sik (Goostech Co., Ltd.)
Nam, Seung Min (Huvis R&D Center)
Ham, Jin Soo (Huvis R&D Center)
Publication Information
Textile Science and Engineering / v.51, no.2, 2014 , pp. 70-75 More about this Journal
Abstract
In this study, changes in the molecular structure of a sheath-core polyethylene (PE)/polypropylene (PP) bicomponent monofilament were investigated using different fractions of sheath or core components. The melt complex viscosity of sheath PE showed a greater shear thinning behavior than core PP. For both as-spun and drawn filaments, the crystal structure of sheath PE developed better than that of core PP. In the as-spun monofilament, the core PP crystal structure did not develop well, while sheath PE showed a more developed crystal structure. Further, sonic velocity indicating the molecular orientation increased upon drawing but was rarely dependent on the sheath PE fraction for both as-spun and drawn monofilaments.
Keywords
sheath-core; PE; PP; bicomponent; monofilament;
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