Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis

X. L. Xie; R. K.Y. Li; S. C. Tjong; Chak Yin Tang

doi:10.1023/A:1021640911104

Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis

X. L. Xie, R. K.Y. Li, S. C. Tjong, Chak Yin Tang

Research output: Journal article publication › Journal article › Academic research › peer-review

10 Citations (Scopus)

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 χ12values 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 χ12decreases. 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.

Original language	English
Pages (from-to)	541-548
Number of pages	8
Journal	Journal of Thermal Analysis and Calorimetry
Volume	70
Issue number	2
DOIs	https://doi.org/10.1023/A:1021640911104
Publication status	Published - 1 Jan 2002

Keywords

Flory-Huggins interaction parameter
Miscibility
Poly(butyl terephthalate)
Polyamide 66
Semiflexible liquid crystalline copolyesteramide

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry

More information

10.1023/A:1021640911104

Cite this

@article{225e8592e26a401aba11a07d750890ff,

title = "Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis",

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 χ12values 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 χ12decreases. 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.",

keywords = "Flory-Huggins interaction parameter, Miscibility, Poly(butyl terephthalate), Polyamide 66, Semiflexible liquid crystalline copolyesteramide",

author = "Xie, {X. L.} and Li, {R. K.Y.} and Tjong, {S. C.} and Tang, {Chak Yin}",

year = "2002",

month = jan,

day = "1",

doi = "10.1023/A:1021640911104",

language = "English",

volume = "70",

pages = "541--548",

journal = "Journal of Thermal Analysis and Calorimetry",

issn = "1418-2874",

publisher = "Springer Netherlands",

number = "2",

}

TY - JOUR

T1 - Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis

AU - Xie, X. L.

AU - Li, R. K.Y.

AU - Tjong, S. C.

AU - Tang, Chak Yin

PY - 2002/1/1

Y1 - 2002/1/1

N2 - 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 χ12values 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 χ12decreases. 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.

AB - 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 χ12values 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 χ12decreases. 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.

KW - Flory-Huggins interaction parameter

KW - Miscibility

KW - Poly(butyl terephthalate)

KW - Polyamide 66

KW - Semiflexible liquid crystalline copolyesteramide

UR - http://www.scopus.com/inward/record.url?scp=0036443604&partnerID=8YFLogxK

U2 - 10.1023/A:1021640911104

DO - 10.1023/A:1021640911104

M3 - Journal article

SN - 1418-2874

VL - 70

SP - 541

EP - 548

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

IS - 2

ER -

Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this