Abstract
Thermal properties and transesterification reaction of blends of polyarylate (PAr) and a thermotropic liquid crystalline polymer (LCP) were investigated by differential scanning calorimetry (DSC) and Fourier Transform infrared (FT-IR) spectroscopy. In the thermogram of PAr-LCP blends, two glass transition temperatures (T(g)s) were observed. Phase behavior of the blends revealed that the LCP dissolved more in the PAr-rich phase than did the PAr in the LCP-rich phase, indicating partial miscibility between two polymers. The polymer-polymer interaction parameter (χ12) was calculated, and ranged from 0.069 to 0.076. In the calculation of the χ12, the anisotropy of the LCP was considered. After annealing, the two T(g)s of the blends were shifted toward the center. In the FT-IR spectroscopy study of the annealed PAr-LCP blends, three new characteristic peaks of the ester group were detected. The DSC and FT-IR results suggested that transesterification reaction between PAr and LCP occurred under the annealed condition.
| Original language | English |
|---|---|
| Pages (from-to) | 151-158 |
| Number of pages | 8 |
| Journal | Polymer Bulletin |
| Volume | 45 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2000 Dec 21 |
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ASJC Scopus subject areas
- Polymers and Plastics
- Materials Chemistry
Cite this
Thermal properties of blends of a thermotropic liquid crystalline copolyester of poly(hydroxy benzoic acid-co-ethylene terephthalate) and polyarylate. / Han, M.; Park, J.; Sun Woo Cheen, Woo Cheen; Kim, Sung Hyun; Kim, Woo Nyon.
In: Polymer Bulletin, Vol. 45, No. 2, 21.12.2000, p. 151-158.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Thermal properties of blends of a thermotropic liquid crystalline copolyester of poly(hydroxy benzoic acid-co-ethylene terephthalate) and polyarylate
AU - Han, M.
AU - Park, J.
AU - Sun Woo Cheen, Woo Cheen
AU - Kim, Sung Hyun
AU - Kim, Woo Nyon
PY - 2000/12/21
Y1 - 2000/12/21
N2 - Thermal properties and transesterification reaction of blends of polyarylate (PAr) and a thermotropic liquid crystalline polymer (LCP) were investigated by differential scanning calorimetry (DSC) and Fourier Transform infrared (FT-IR) spectroscopy. In the thermogram of PAr-LCP blends, two glass transition temperatures (T(g)s) were observed. Phase behavior of the blends revealed that the LCP dissolved more in the PAr-rich phase than did the PAr in the LCP-rich phase, indicating partial miscibility between two polymers. The polymer-polymer interaction parameter (χ12) was calculated, and ranged from 0.069 to 0.076. In the calculation of the χ12, the anisotropy of the LCP was considered. After annealing, the two T(g)s of the blends were shifted toward the center. In the FT-IR spectroscopy study of the annealed PAr-LCP blends, three new characteristic peaks of the ester group were detected. The DSC and FT-IR results suggested that transesterification reaction between PAr and LCP occurred under the annealed condition.
AB - Thermal properties and transesterification reaction of blends of polyarylate (PAr) and a thermotropic liquid crystalline polymer (LCP) were investigated by differential scanning calorimetry (DSC) and Fourier Transform infrared (FT-IR) spectroscopy. In the thermogram of PAr-LCP blends, two glass transition temperatures (T(g)s) were observed. Phase behavior of the blends revealed that the LCP dissolved more in the PAr-rich phase than did the PAr in the LCP-rich phase, indicating partial miscibility between two polymers. The polymer-polymer interaction parameter (χ12) was calculated, and ranged from 0.069 to 0.076. In the calculation of the χ12, the anisotropy of the LCP was considered. After annealing, the two T(g)s of the blends were shifted toward the center. In the FT-IR spectroscopy study of the annealed PAr-LCP blends, three new characteristic peaks of the ester group were detected. The DSC and FT-IR results suggested that transesterification reaction between PAr and LCP occurred under the annealed condition.
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U2 - 10.1007/s002890070043
DO - 10.1007/s002890070043
M3 - Article
VL - 45
SP - 151
EP - 158
JO - Polymer Bulletin
JF - Polymer Bulletin
SN - 0170-0839
IS - 2
ER -