Step-growth polymerisation (2): production of nylon

Principle

The reaction of sebacoyl chloride with hexamethylenediamine forms Nylon 610^®. The two components are dissolved in two solvents of different density which do not mix with one another. For this reason, a reaction can take place only at the contact surface between the two phases. This interfacial polymerisation makes it possible to pull a continuous string from the glass beaker (rope trick). The test can also be carried out without the winding reel pictured here. In that case the nylon thread is simply wound up onto a glass rod.

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