SEQUENTIALLY ORDERED, THERMOTROPIC AROMATIC COPOLYESTERS - SYNTHESIS AND COMPARISON OF THEIR PROPERTIES WITH RANDOM COPOLYESTERS

被引：17

作者：

JIN, JI

CHANG, JH

JO, BW

SUNG, KY

KANG, CS

机构：

[1] Chemistry Department, College of Sciences, Korea University, Seoul

[2] Department of Polymer Science and Engineering, Kum-Oh Institute of Technology, Gumi

[3] Department of Chemical Engineering, Cho-Sun University, Kwangju

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 33卷

关键词：

D O I：

10.1002/masy.19900330109

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Synthetic methods of aromatic copolyesters having ordered comonomer sequence are described. In order to obtain a regular sequence copolyester, one first has to prepare a dimeric or trimeric compound with a predesigned sequence via a multistep route and then polycondense it with another difunctional compound. Low reaction temperature is required to avoid the occurrence of undesired interchange reactions that would lead to randomization of the comonomer sequence. Sequentially ordered copolyesters exhibit significant differences in thermal transitions, crystalline properties, and occasionally even in liquid crystallinity when compared with the properties of the corresponding random copolyesters. According to the preliminary results randomization in comonomer sequence of sequentially regular aromatic copolyesters above their melting points is rather rapid. Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：97 / 115

页数：19

共 55 条

[1]

Ober C.K., Jin J.-I., Lenz R.W., Adv. Polym. Sci., 59, (1984)

[2]

Jin J.-I., Antoun S., Ober C., Lenz R.W., Br. Polym. J., 12, 4, (1980)

[3]

Lenz R.W., Jin J.-I., Macromolecules, 14, (1981)

[4]

Jin J.-I., Chang J.-H., Shim H.-K., Macromolecules, 22, (1989)

[5]

Rosenau-Eichin R., Ballauff M., Grebewicz J., Fischer E.W., Polymer, 29, (1988)

[6]

Hong S.-K., Blackwell J., Polymer, 30, (1989)

[7]

Tsay J., Volksen W., Dawson B.L., Economy J., ‘Liquid Crystals and Ordered Fluids’, 4, pp. 363-373, (1984)

[8]

Noel C., Friedrich C., Laupretre F., Billard J., Bosio L., Strazielle C., Polymer, 25, (1984)

[9]

Antoun S., Lenz R.W., Jin J.-I., J. Polym. Sci., Polym. Chem. Ed., 19, (1981)

[10]

Percec V., Yourd R., Macromolecules, 22, (1989)

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