Miscibility of semi-flexible thermotropic liquid crystalline copolyesteramide with polyamide 66

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Original languageEnglish
Pages (from-to)356-362
Journal / PublicationChemical Research in Chinese Universities
Issue number4
Online published24 Dec 2000
Publication statusPublished - 2000


Liquid crystalline polymer-polyamide 66 (LCP/PA66) blends were compounded by using a Brabender mixing followed by compression moulding. The LCP employed was a semi-flexible liquid crystalline copolyesteramide based on 30% (molar fraction) of p-amino benzoic acid (ABA) and 70% (molar fraction) of poly (ethylene terephthalate) (PET). The LCP/PA66 blends were investigated in terms of the thermal and dynamic mechanical properties. It was found that PA66 and LCP components of the blends are miscible in the molten state, but are partially miscible in the solid state. The inclusion of the semi-flexible LCP into PA66 retards the crystallization rate of PA66. Furthermore the melting temperature and the degree of crystallinity of PA66 are reduced considerably due to the LCP addition.

Research Area(s)

  • Miscibility, Polyamide 66, Semi-flexible copolyesteramide