Question

Can you answer these questions based on the Synthesis of Nylon-6,6 using adipoyl chloride and 1,6-hexanediamine

Discuss the polycondensation reaction. Why would water interfere with it? In case experiment failed-explanation is expected. Why it failed? What could be improved. Explain molecular structure vs signal relationship . In your discussion consider the following concepts: polycondensation, functional groups, fibril formation and stabilization (interchain molecular itneractions) , reaction yield and the role of NaOH solution used in the reaction

Answer 1

Synthesis of Nylon-6,6 using adipoyl chloride and 1,6-hexanediamine is done by polycondensation reaction in which the two monomer molecules having different functional groups say one each in case of the above reaction combines together to form a polymer having two functional groups and water is expelleda as a by product.

The removal of this byproduct plays a very important role in the kinetics of the polycondensation reaction. A lower molecular mass component which is generated during the polycondensation reaction has a mass and concentration which will affect the reaction mechanism negatively.so to remove the by product efficiently the temperature should be kept high and vaccum should be efficient. This will lead to the favourable production of nylon 66.The reaction can fail in case the temperature is kept low and not good vaccum is provided. So in that case water will inferere in the reaction mechanism.