Question

In: Chemistry

experment (Nylon-6,6) 1- 5-7 sentences for result . 2- 5-7 sentences for the conclusion

experment (Nylon-6,6)
1- 5-7 sentences for result .
2- 5-7 sentences for the conclusion

Solutions

Expert Solution

Nylon 66 is synthesised by polycondensation of hexamethylenediamine and adipic acid. Equivalent amounts of hexamethylenediamine and adipic acid are combined with water. This is crystallized to make nylon salt, which has precisely stoichiometric equivalents.

n HOOC-(CH2)4-COOH + n H2N-(CH2)6-NH2 → [-OC-( CH2)4-CO-NH-(CH2)6-NH-]n + 2n H2O

Conclusions:

  • It is it important to flame dry the test tube before addition of the thionyl chloride.
  • The purpose of this experiment is to synthesis Nylon-6,6. We took take advantage of the fact the an acid chloride is much more reactive than the parent acid. So we will convert the adipic acid to adipoyl chloride which is much more reactive toward the amine. We produced the adipoyl chloride by reacting your adipic acid with thionyl chloride. In effect, the thionyl chloride replaces the hydroxide of the carboxylic group with chlorine which is a much better leaving group.

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