Thermal properties and morphology of blends of poly(ether imide) and polycarbonate

Yong Sung Chun; Heon Sang Lee; Woo Nyon Kim; Taeg Su Oh

doi:10.1002/pen.10668

Thermal properties and morphology of blends of poly(ether imide) and polycarbonate

Yong Sung Chun, Heon Sang Lee, Woo Nyon Kim, Taeg Su Oh

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Blends of poly(ether imide) (PEI) and bisphenol-A polycarbonate (PC) have been investigated by differential scanning calorimetry, dynamic mechanical thermal analyzer, scanning electron microscopy, and transmission electron microscopy. Three different molecular weights of polycarbonate have been used in the PEI-PC blends. Blends were prepared by screw extrusion and solution casting with weight fractions of PEI in the blends varying from 0.90 to 0.10. From the measured glass transition temperature (T_g), the maximum decrease of T_g(PEI) is observed for 0.9 weight fraction PEI in the PEI-PC blends. In the study of the morphology, the size of minor component domains (about 0.1 to 0.3 μm) in the 90/10 PEI-PC blend is small compared to the size of minor component domains (about 0.2 to 2.0 μm) in the 10/90 PEI-PC blend. This morphological behavior is attributed mainly to the difference of viscosity ratio between the dispersed phase and continuous phase. No considerable differences in the thermal behavior and morphologies have been observed among the blends of PEI and PC having different molecular weights.

Original language	English
Pages (from-to)	2694-2702
Number of pages	9
Journal	Polymer Engineering and Science
Volume	36
Issue number	22
DOIs	https://doi.org/10.1002/pen.10668
Publication status	Published - 1996

ASJC Scopus subject areas

Chemistry(all)
Polymers and Plastics
Materials Chemistry

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title = "Thermal properties and morphology of blends of poly(ether imide) and polycarbonate",

abstract = "Blends of poly(ether imide) (PEI) and bisphenol-A polycarbonate (PC) have been investigated by differential scanning calorimetry, dynamic mechanical thermal analyzer, scanning electron microscopy, and transmission electron microscopy. Three different molecular weights of polycarbonate have been used in the PEI-PC blends. Blends were prepared by screw extrusion and solution casting with weight fractions of PEI in the blends varying from 0.90 to 0.10. From the measured glass transition temperature (Tg), the maximum decrease of Tg(PEI) is observed for 0.9 weight fraction PEI in the PEI-PC blends. In the study of the morphology, the size of minor component domains (about 0.1 to 0.3 μm) in the 90/10 PEI-PC blend is small compared to the size of minor component domains (about 0.2 to 2.0 μm) in the 10/90 PEI-PC blend. This morphological behavior is attributed mainly to the difference of viscosity ratio between the dispersed phase and continuous phase. No considerable differences in the thermal behavior and morphologies have been observed among the blends of PEI and PC having different molecular weights.",

author = "Chun, {Yong Sung} and Lee, {Heon Sang} and Kim, {Woo Nyon} and Oh, {Taeg Su}",

year = "1996",

doi = "10.1002/pen.10668",

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T1 - Thermal properties and morphology of blends of poly(ether imide) and polycarbonate

AU - Chun, Yong Sung

AU - Lee, Heon Sang

AU - Kim, Woo Nyon

AU - Oh, Taeg Su

PY - 1996

Y1 - 1996

N2 - Blends of poly(ether imide) (PEI) and bisphenol-A polycarbonate (PC) have been investigated by differential scanning calorimetry, dynamic mechanical thermal analyzer, scanning electron microscopy, and transmission electron microscopy. Three different molecular weights of polycarbonate have been used in the PEI-PC blends. Blends were prepared by screw extrusion and solution casting with weight fractions of PEI in the blends varying from 0.90 to 0.10. From the measured glass transition temperature (Tg), the maximum decrease of Tg(PEI) is observed for 0.9 weight fraction PEI in the PEI-PC blends. In the study of the morphology, the size of minor component domains (about 0.1 to 0.3 μm) in the 90/10 PEI-PC blend is small compared to the size of minor component domains (about 0.2 to 2.0 μm) in the 10/90 PEI-PC blend. This morphological behavior is attributed mainly to the difference of viscosity ratio between the dispersed phase and continuous phase. No considerable differences in the thermal behavior and morphologies have been observed among the blends of PEI and PC having different molecular weights.

AB - Blends of poly(ether imide) (PEI) and bisphenol-A polycarbonate (PC) have been investigated by differential scanning calorimetry, dynamic mechanical thermal analyzer, scanning electron microscopy, and transmission electron microscopy. Three different molecular weights of polycarbonate have been used in the PEI-PC blends. Blends were prepared by screw extrusion and solution casting with weight fractions of PEI in the blends varying from 0.90 to 0.10. From the measured glass transition temperature (Tg), the maximum decrease of Tg(PEI) is observed for 0.9 weight fraction PEI in the PEI-PC blends. In the study of the morphology, the size of minor component domains (about 0.1 to 0.3 μm) in the 90/10 PEI-PC blend is small compared to the size of minor component domains (about 0.2 to 2.0 μm) in the 10/90 PEI-PC blend. This morphological behavior is attributed mainly to the difference of viscosity ratio between the dispersed phase and continuous phase. No considerable differences in the thermal behavior and morphologies have been observed among the blends of PEI and PC having different molecular weights.

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Thermal properties and morphology of blends of poly(ether imide) and polycarbonate

Abstract

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