give synthesis of kevlar??
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Kevlar is synthesized in solution from the monomers 1,4-phenylene-diamine (para-phenylenediamine) and terephthaloyl chloride in a condensation reaction yielding hydrochloric acid as a byproduct. The result has liquid-crystalline behavior, and mechanical drawing orients the polymer chains in the fiber's direction.
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Kevlar is made through a dehydration reaction between terephthalic acid (one of the two reactants in the synthesis of Dacron®) and p-phenylenediamine. Like with the dehydration reactions to form both polyethelyne terephthalate and Nylon 6-6, this reaction is repeated to form a long chain of the Kevlar molecule.
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