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Deformation Behavior and Nucleation Activity of a Thermotropic Liquid­Crystalline Polymer in Poly(butylene terephthalate)-Based Composites  

Kim Jun Young (Department of Fiber and Polymer Engineering, College of Engineering, Hanyang University)
Kang Seong Wook (Department of Fiber and Polymer Engineering, College of Engineering, Hanyang University)
Kim Seong Hun (Department of Fiber and Polymer Engineering, College of Engineering, Hanyang University)
Kim Byoung Chul (Department of Fiber and Polymer Engineering, College of Engineering, Hanyang University)
Shim Kwang Bo (Department of Ceramic Engineering, CPRC, College of Engineering, Hanyang University)
Lee Jung Gyu (SKC Film R&D Center)
Publication Information
Macromolecular Research / v.13, no.1, 2005 , pp. 19-29 More about this Journal
Abstract
Polymer composites based on a thermotropic liquid-crystalline polymer (TLCP) and poly(butylene terephthalate) (PBT) were prepared using a melt blending process. Polymer composites consisting of bulk cheap polyester with a small quantity of expensive TLCP are of interest from a commercial perspective. The interactions between the PBT chains and the flexible poly(ethylene terephthalate) (PET) units in the TLCP phase resulted in an improvement in the compatibility of PBT/TLCP composites. TLCP droplets deformed and fragmented into smaller droplets in the PBT/TLCP composites, which resulted in TLCP fibrillation through the effective deformation of the TLCP droplets. The nucleation activities of the PBT/TLCP composites increased by adding even a small amount of the TLCP component.
Keywords
composites; deformation; liquid-crystalline polymers (LCP); miscibility; nucleation, poly(butylene terephthalate) (PBT).;
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