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FTIR and strengthening studies on liquid crystalline oligomers of 2-thioalkoxy/2-alkoxyhydroquinones and terephthaloyl chloride
Univ. Oulu.
Univ. Oulu.
RISE, Swerea, Swerea SICOMP.
VTT Chemical Technology.
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2000 (English)In: Polymer, ISSN 0032-3861, E-ISSN 1873-2291, Vol. 41, no 20, p. 7297-7302Article in journal (Refereed)
Abstract [en]

The properties of liquid crystalline (LC) oligomers produced from 2-thioalkoxyhydroquinones (2-thioalkoxyHQs) and 2-alkoxyhydroquinones (2-alkoxyHQs) with terephthaloyl chloride (1a-c, 2a-c) have been studied and their compatibility with polyamide 11 (PA 11) has been investigated. FTIR studies showed two conformations of the synthesized oligomers. A three-point bending test indicated that oligomeric chains could strengthen the final flexural properties of the polyamide. Strength of PA 11 was increased by addition of only 1% of LC oligomers to the matrix. Compatibility between oligomer chains and PA 11 was lower than the compatibility between corresponding oligomers of 2-alkoxy-4-hydroxybenzoic acids (2-alkoxyHBAs) and PA 11. (C) 2000 Elsevier Science Ltd. All rights reserved.The properties of liquid crystalline (LC) oligomers produced from 2-thioalkoxyhydroquinones (2-thioalkoxyHQs) and 2-alkoxyhydroquinones (2-alkoxyHQs) with terephthaloyl chloride (1a-c, 2a-c) have been studied and their compatibility with polyamide 11 (PA 11) has been investigated. FTIR studies showed two conformations of the synthesized oligomers. A three-point bending test indicated that oligomeric chains could strengthen the final flexural properties of the polyamide. Strength of PA 11 was increased by addition of only 1% of LC oligomers to the matrix. Compatibility between oligomer chains and PA 11 was lower than the compatibility between corresponding oligomers of 2-alkoxy-4-hydroxybenzoic acids (2-alkoxyHBAs) and PA 11.

Place, publisher, year, edition, pages
Elsevier Science Ltd, Exeter, United Kingdom , 2000. Vol. 41, no 20, p. 7297-7302
Keywords [en]
Aromatic polyesters, Liquid crystalline polymers, Polymer blends
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13230DOI: 10.1016/S0032-3861(00)00099-9OAI: oai:DiVA.org:ri-13230DiVA, id: diva2:973426
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-11-21Bibliographically approved

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