TY - JOUR
T1 - Compatibility studies of sulfonated poly(ether ether ketone)-poly(ether imide)-polycarbonate ternary blends
AU - Chun, Yong Sung
AU - Kwon, Hyun Sung
AU - Kim, Woo Nyon
AU - Yoon, Ho Gyu
PY - 2000/12
Y1 - 2000/12
N2 - Binary blends of the sulfonated poly(ether ether ketone) (SPEEK)-poly(ether imide) (PEI) and SPEEK-polycarbonate (PC), and ternary blends of the SPEEK-PEI-PC, were investigated by differential scanning calorimetry. SPEEK was obtained by sulfonation of poly(ether ether ketone) using 95% sulfuric acid. From the thermal analysis of the SPEEK-PEI blends, single glass transition temperature (Tg) was observed at all the blend composition. For the SPEEK-PC blends, double TgS were observed. From the results of thermal analysis, it is suggested that the SPEEK-PEI blends are miscible and the SPEEK-PC blends are immiscible. Polymer-polymer interaction parameter (χ12) of the SPEEK-PEI blends was calculated from the modified Lu and Weiss equation, and found to range from -0.011 to -0.825 with the blend composition. For the SPEEK-PC blends, the χ12 values were calculated from the modified Flory-Huggins equation, and found to range from 0.191 to 0.272 with the blend composition. For the SPEEK-PEI-PC ternary blends, phase separation regions that showed two TgS were found to be consistent with the spinodal curves calculated from the χ12 values of the three binary blends.
AB - Binary blends of the sulfonated poly(ether ether ketone) (SPEEK)-poly(ether imide) (PEI) and SPEEK-polycarbonate (PC), and ternary blends of the SPEEK-PEI-PC, were investigated by differential scanning calorimetry. SPEEK was obtained by sulfonation of poly(ether ether ketone) using 95% sulfuric acid. From the thermal analysis of the SPEEK-PEI blends, single glass transition temperature (Tg) was observed at all the blend composition. For the SPEEK-PC blends, double TgS were observed. From the results of thermal analysis, it is suggested that the SPEEK-PEI blends are miscible and the SPEEK-PC blends are immiscible. Polymer-polymer interaction parameter (χ12) of the SPEEK-PEI blends was calculated from the modified Lu and Weiss equation, and found to range from -0.011 to -0.825 with the blend composition. For the SPEEK-PC blends, the χ12 values were calculated from the modified Flory-Huggins equation, and found to range from 0.191 to 0.272 with the blend composition. For the SPEEK-PEI-PC ternary blends, phase separation regions that showed two TgS were found to be consistent with the spinodal curves calculated from the χ12 values of the three binary blends.
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U2 - 10.1002/1097-4628(20001227)78:14<2488::AID-APP80>3.0.CO;2-T
DO - 10.1002/1097-4628(20001227)78:14<2488::AID-APP80>3.0.CO;2-T
M3 - Article
AN - SCOPUS:0034541293
SN - 0021-8995
VL - 78
SP - 2488
EP - 2494
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 14
ER -