Synthesis and Characterization of Thermotropic Poly(benzobisthiazole)s

Kunio Kimura; David L. Meurer; René F. Hutzler; J. W. Fitch; Patrick E. Cassidy

doi:10.1021/ma00084a003

Synthesis and Characterization of Thermotropic Poly(benzobisthiazole)s

Kunio Kimura, David L. Meurer, René F. Hutzler, J. W. Fitch, Patrick E. Cassidy

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

11 Citations (Scopus)

Abstract

Thermotropic polymers containing the benzo[1,2-d:4,5-d′]bisthiazole-2,6-diyl unit combined with 2,5-bis(n-alkoxy)-1,4-phenylene (Cn-PTBT) or 5-(alkyloxy)-1,3-phenylene units (Cn-PIBT) were synthesized via precursor polyamides prepared by low-temperature solution polycondensation. The polyamides were converted into Cn-PTBT or Cn-PIBT by heating at 250 °C. All polymers except for one containing 2,5-bis(n-butyloxy)-1,4-phenylene showed anisotropic melt phases in the range of 280-450 °C. Characterization of these polymers by differential scanning calorimetry, thermal optical analysis, X-ray diffraction, and thermogravimetric analysis is reported. The polymers were not stable at high temperatures due to decomposition of the alkyloxy side chains.

Original language	English
Pages (from-to)	1303-1306
Number of pages	4
Journal	Macromolecules
Volume	27
Issue number	6
DOIs	https://doi.org/10.1021/ma00084a003
Publication status	Published - Nov 1 1994
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Synthesis and Characterization of Thermotropic Poly(benzobisthiazole)s",

abstract = "Thermotropic polymers containing the benzo[1,2-d:4,5-d′]bisthiazole-2,6-diyl unit combined with 2,5-bis(n-alkoxy)-1,4-phenylene (Cn-PTBT) or 5-(alkyloxy)-1,3-phenylene units (Cn-PIBT) were synthesized via precursor polyamides prepared by low-temperature solution polycondensation. The polyamides were converted into Cn-PTBT or Cn-PIBT by heating at 250 °C. All polymers except for one containing 2,5-bis(n-butyloxy)-1,4-phenylene showed anisotropic melt phases in the range of 280-450 °C. Characterization of these polymers by differential scanning calorimetry, thermal optical analysis, X-ray diffraction, and thermogravimetric analysis is reported. The polymers were not stable at high temperatures due to decomposition of the alkyloxy side chains.",

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AU - Kimura, Kunio

AU - Meurer, David L.

AU - Hutzler, René F.

AU - Fitch, J. W.

AU - Cassidy, Patrick E.

PY - 1994/11/1

Y1 - 1994/11/1

N2 - Thermotropic polymers containing the benzo[1,2-d:4,5-d′]bisthiazole-2,6-diyl unit combined with 2,5-bis(n-alkoxy)-1,4-phenylene (Cn-PTBT) or 5-(alkyloxy)-1,3-phenylene units (Cn-PIBT) were synthesized via precursor polyamides prepared by low-temperature solution polycondensation. The polyamides were converted into Cn-PTBT or Cn-PIBT by heating at 250 °C. All polymers except for one containing 2,5-bis(n-butyloxy)-1,4-phenylene showed anisotropic melt phases in the range of 280-450 °C. Characterization of these polymers by differential scanning calorimetry, thermal optical analysis, X-ray diffraction, and thermogravimetric analysis is reported. The polymers were not stable at high temperatures due to decomposition of the alkyloxy side chains.

AB - Thermotropic polymers containing the benzo[1,2-d:4,5-d′]bisthiazole-2,6-diyl unit combined with 2,5-bis(n-alkoxy)-1,4-phenylene (Cn-PTBT) or 5-(alkyloxy)-1,3-phenylene units (Cn-PIBT) were synthesized via precursor polyamides prepared by low-temperature solution polycondensation. The polyamides were converted into Cn-PTBT or Cn-PIBT by heating at 250 °C. All polymers except for one containing 2,5-bis(n-butyloxy)-1,4-phenylene showed anisotropic melt phases in the range of 280-450 °C. Characterization of these polymers by differential scanning calorimetry, thermal optical analysis, X-ray diffraction, and thermogravimetric analysis is reported. The polymers were not stable at high temperatures due to decomposition of the alkyloxy side chains.

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Synthesis and Characterization of Thermotropic Poly(benzobisthiazole)s

Abstract

ASJC Scopus subject areas

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