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Liquid crystal polymers—11. Structure-property relationships in a series of thermotropic poly(2-n-alkyl-1,4-phenylene terephthalates)

✍ Scribed by J. Majnusz; J.M. Catala; R.W. Lenz

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 293 KB
Volume: 19
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(83)90070-8

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✦ Synopsis

Abstraet--A series of thermotropic poly(2-n-alkyl-l,4-phenylene terephthalates) was synthesized and characterized for liquid crystalline properties by differential scanning calorimetry (DSC) and by use of a polarizing microscope. All members of the series, from the polymer with the n-hexyl to that with the n-dodecyl alkyl group, appeared to form smectic phases above their melting points. The effects of substituent and molecular weight on melting points and clearing temperatures were determined.

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✍ J. Majnusz; R.W. Lenz 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 336 KB

Almtraet--A series of n-and iso-alkylhydroquinone and diacetate monomers was synthesized at high purity for the preparation of a series of high molecular weight aromatic polyesters of the type: poly(2-alkyl-1,4-phenylene terephthalates). The reductive alkylation of benzoquinone with the appropriate