Effects of interface on the dynamic mechanical properties of PET/nylon 6 bicomponent fibers

✍ Scribed by Yoeng Baeg Choi; Sang Yong Kim

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 310 KB
• Volume: 74
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19991121)74:8<2083::aid-app25>3.0.co;2-g

✦ Synopsis

Three types of drawn bicomponent fibers were investigated to find out the effects of interface on the crystallinity and the dynamic mechanical properties. They are in the form of side-by-side, alternating-radial, and island-sea types, and the core or island component is PET, and the sheath or sea component is nylon 6. From the results it is observed that the storage moduli of these fibers are higher and the maximum values of the loss tangent are lower than the values calculated by the Takayanagi parallel model. Also, the decrease of interfaces between the two components improves the crystallinity of the PET component in the bicomponent fibers compared with the single-component PET fiber. With the decrease in interfacial area, the maximum loss tangent decreases and the crystallinity increases at the same composition ratios. Among three types of bicomponent fibers, the side-by-side type-with the smallest interfacial area-has the highest crystallinity and the lowest maximum loss tangent.