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The Synthesis and Solubility of a Wholly Aromatic Polyamide Containing Para- and Meta-Substituted Phenylene Rings

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Abstract:

A series of wholly aromatic polyamides (aramid) containing para- and meta-substituted phenylene rings was copolymerized via phosphorylation method with different ratio of 4-aminobenzoic acid and 3-aminobenzoic acid. The inherent viscosities (ηinh) of products were 0.52-0.99 dL/g. The chain structure of the polymers was characterized by Fourier transform infrared spectroscopy (FT-IR) and Raman spectrum. The differential scanning calorimetry (DSC) was also performed to investigate the chain transformation behavior of aramid. With increasing the content of meta-substituted phenylene rings in macromolecular chain, the solubility of the polymers was improved obviously without appreciable loss for their original thermal property.

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Periodical:

Applied Mechanics and Materials (Volume 320)

Pages:

488-494

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.320.488

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Online since:

May 2013

Authors:

Yi Fan Wang, Jun Sun, Li Xing Dai

Keywords:

Aramid, Aromatic Polyamide, Copolymerization, Solubility

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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