Thermotropic mesomorphic polyesters. I. Copolyesters of terephthalic acid, hydroquinone, and flexible diols
Ramesh S. Ghadage
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India
Search for more papers by this authorSurendra Ponrathnam
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India
Search for more papers by this authorCorresponding Author
Vikas M. Nadkarni
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India
NCL Communication, No. 4245
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India===Search for more papers by this authorRamesh S. Ghadage
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India
Search for more papers by this authorSurendra Ponrathnam
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India
Search for more papers by this authorCorresponding Author
Vikas M. Nadkarni
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India
NCL Communication, No. 4245
Polymer Science and Engineering Group, Division of Chemical Engineering, National Chemical Laboratory, Pune-411 008, India===Search for more papers by this authorAbstract
A new series of copolyesters has been synthesized by low-temperature solution polycondensation of terephthaloyl dichloride hydroquinone and flexible diols such as 1,2-propane diol, 1,4-butanediol, diethylene glycol, (cis) 1,4-cyclohexanediol and (cis + trans) 1,4-bis(hydroxymethyl) cyclohexane. The copolyesters are all insoluble and display thermotropic mesophases at relatively lower transitions than other commercially important systems. The transition temperatures, the crystallinity, and thermal characterization are reported.
References
- 1 Rigid Rod Polymers, 28th Macromol. Symp. Proc., I.U.P.A.C. (1982).
- 2 Polymer liquid crystals, Faraday Discuss. Chem. Soc., 79 (1985).
- 3
A. Blumstein, Ed.,
Polymeric Liquid Crystals,
Plenum Press,
New York,
1985.
10.1007/978-1-4899-2299-1 Google Scholar
- 4
A. Blumstein, Ed.,
Liquid Crystalline Order in Polymers,
Academic Press,
New York,
1978.
10.1021/bk-1978-0074 Google Scholar
- 5
A. Ciferri,
W. R. Krigbaum, and
Robert B. Meyer, Eds.,
Polymer Liquid Crystals,
Academic Press,
New York,
1982.
10.1016/B978-0-12-174680-3.50008-8 Google Scholar
- 6 R. W. Lenz, Faraday Discuss. Chem. Soc., 79, 21 (1985).
- 7 C. K. Ober, J.-I. Jin, and R. W. Lenz, Adv. Polym. Sci., 59, 104 (1984).
- 8 Tai-Shung Chung, Polym. Eng. Sci., 26, 901 (1986).
- 9 J.-I. Jin, S. Antoun, C. Ober, and R. W. Lenz, Br. Polym. J., 12, 132 (1980).
- 10 W. J. Jackson Jr., Br. Polym. J., 12, 154 (1980).
- 11 W. J. Jackson Jr., Macromolecules, 16, 1027 (1983).
- 12 F. E. McFarlane, V. A. Niceley, and T. G. Davis, Contemp. Topics Polym. Sci., 2, 109 (1976).
- 13 W. J. Jackson Jr. and H. F. Kuhfuss, J. Polym. Sci., Polym. Chem. Ed., 14, 2043 (1976).
- 14 W. J. Jackson Jr. and H. F. Kuhfuss, J. Appl. Polym. Sci., 25, 1685 (1980).
- 15 G. W. Calundann and M. Jaffe, Anistropic Polymers, their synthesis and properties, Proc. of the Robert A. Welch Conf. on Chem. Res. XXVI, Synthetic Polymers (1982).
- 16 G. Menges and G. Hahn, Mod. Plas. Intern., 11(8), 38 (1981).
- 17 A. S. Wood, Mod. Plas. Intern., 15(9) 66 (1985).
- 18 P. Mapleston, Mod. Plas. Intern., 17(5), 42 (1987).
- 19 C. Aguilera and I. Luderwald, Makromol. Chem., 179, 2817 (1978).
- 20 S. Antoun, R. W. Lenz and J.-I. Jin, J. Polym. Sci., Polym. Chem. Ed., 19 1901 (1981).
- 21 Q. F. Zhou and R. W. Lenz, J. Polym. Sci., Polym. Chem. Ed., 21, 3313 (1983).
- 22 M. B. Polk, K. B. Bota, E. Akubuiro, and M. Phingobodhipakkiya, Macromolecules, 14, 1626 (1981).
- 23 C. Bhasker, J. Kops, B. Marcher, and H. Spanggaard, in Recent Advances in Liquid Crystauization of Polymers, L. L. Chapoy Ed., Elsevier Applied Science Publ., London, 1985 p. 83.
- 24 W. J. Jackson Jr., in I.U.P.A.C., 28th Macromol. Symp. Proc., 800 (1982).
- 25 R. W. Lenz, Polym. J., 17, 105 (1985).
- 26 Q. F. Zhou, J.-I. Jin, and R. W. Lenz, Can. J. Chem., 63, 181 (1985).
- 27 C. K. Ober and R. W. Lenz, Macromolecules, 14, 1034 (1983).
- 28 W. R. Sorenson and T. W. Campbell, Prep. Methods of Polym. Chem., 2nd ed., Interscience Publishers, New York, 1968, p. 95.
- 29 R. S. Ghadage, unpublished results, 1986.
- 30 R. W. Lenz, in Recent Advances in Liquid Crystauization of Polymers, L. L. Chapoy, ed., Elsevier Applied Science Publ., London, 1985, p. 16.
- 31 A. Blumstein and S. Vilasagar, Mol. Cryst. Liq. Cryst. (Lett)., 72, 1 (1981).
- 32 A. Blumstein, S. Vilasagar, S. Ponrathnam, S. B. Clough, G. Maret, and R. B. Blumstein, J. Polym. Sci., Polym. Phys. Ed., 20, 877 (1982).
- 33 J. K. Rabek, Experimental Methods in Polymer Chemistry, John Wiley and Sons, New York, 1984, p. 508.
- 34 C. S. Fuller, Chem. Rev., 26, 143 (1940).
Citing Literature
