Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 70: Issue 2
Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis
Authors:
X. Xie Huazhong University of Science and Technology Department of Chemistry Wuhan 430074 P. R. China Wuhan 430074 P. R. China

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R. Li City University of Hong Kong Department of Physics and Materials Science Kowloon, Hong Kong P. R. China Kowloon, Hong Kong P. R. China

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S. Tjong City University of Hong Kong Department of Physics and Materials Science Kowloon, Hong Kong P. R. China Kowloon, Hong Kong P. R. China

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C. Tang The Hong Kong Polytechnic University Department of Manufacturing Engineering Kowloon, Hong Kong P. R. China Kowloon, Hong Kong P. R. China

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Pages:
541–548
Online Publication Date:
01 Nov 2004
Publication Date:
01 Sep 2002
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1021640911104
Keywords:
Flory-Huggins interaction parameter; semiflexible liquid crystalline copolyesteramide; polyamide 66; miscibility; poly(butyl terephthalate)
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Abstract  

Liquid crystalline polymer/polyamide 66 (LCP/PA66) and LCP/poly(butyl terephthalate) (LCP/PBT) blends were compounded using a Brabender Plasticorder equipped with a mixing chamber. The LCP employed was a semi-flexible liquid crystalline copolyesteramide based on 30 mol% of p-amino benzoic acid (ABA) and 70 mol% of poly(ethylene terephthalate) (PET). The Flory-Huggins interaction parameters (χ12) of the LCP/ PA66 and LCP/PBT blends are estimated by melting point depression from DSC measurement. The results indicate that c12 values all are negative for LCP/PA66 and LCP/PBT blends, and when the LCP content in these blends is more than 10 mass%, the absolute value of χ12 decreases. Thereby, we can conclude that LCP/PA66 and LCP/PBT blends are fully miscible in the molten state, the molecular interaction between the LCP and PA66 is stronger than that between LCP and PBT. As the LCP content in LCP/PA66 and LCP/PBT blends is more than 10 mass%, the molecular interaction between LCP and matrix polymer decreases.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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