Получение нейлона 6,10 (трюк с нейлоновой нитью)

Вытягивание непрерывной нити нейлона из межфазной границы

Organic Synthesis Intermediate (High School) 30 мин ~$18,00

Цель

Синтезировать нейлон 6,10 на границе раздела двух несмешивающихся растворов и вытянуть непрерывную нить из стакана.

Предпосылки

The nylon rope trick is a dramatic demonstration of interfacial polymerization. When a solution of hexamethylenediamine (aqueous) is layered with sebacoyl chloride (in hexane), nylon forms at the interface. The polymer film can be continuously pulled out as a thread or rope.

Предупреждения по безопасности

  • Hexane is highly flammable — no open flames
  • Sebacoyl chloride is corrosive and moisture-sensitive
  • Hexamethylenediamine is an irritant
  • Work in a fume hood

Требуемые СИЗ

goggles gloves lab_coat

Материалы

  • Hexamethylenediamine (3 g)
    Dissolved in 50 mL water
  • Sebacoyl chloride (2 mL)
    In 50 mL hexane
  • Sodium hydroxide (NaOH) (1 g)
    Added to the aqueous layer
  • Hexane (50 mL)
    Solvent for acid chloride

Оборудование

250 mL beaker Forceps or glass rod Paper towel

Процедура

1

Prepare the aqueous solution: dissolve 3 g hexamethylenediamine and 1 g NaOH in 50 mL water in the beaker.

3 мин Irritant — avoid contact
2

Carefully layer the sebacoyl chloride/hexane solution on top of the aqueous solution. Do not mix.

3 мин Work in fume hood
3

Observe the nylon film forming at the interface between the two layers.

2 мин
4

Using forceps, gently pull the nylon film from the center of the interface. A continuous strand should follow.

5 мин
5

Wind the nylon strand around a glass rod, continuously pulling from the interface.

10 мин
6

Rinse the collected nylon with water and blot dry. Examine the fiber properties.

5 мин

Ожидаемые результаты

A continuous strand of nylon can be pulled from the interface for several meters. The polymer is white, slightly elastic, and strong. The reaction continues as long as both reagents are present.

Уборка

Allow remaining solution to react. Dispose of hexane waste in organic solvent waste. Neutralize the aqueous layer. Rinse all glassware.

Frequently Asked Questions

What is the objective of Получение нейлона 6,10 (трюк с нейлоновой нитью)?
Синтезировать нейлон 6,10 на границе раздела двух несмешивающихся растворов и вытянуть непрерывную нить из стакана.
How difficult is Получение нейлона 6,10 (трюк с нейлоновой нитью)?
This experiment is rated as Intermediate (High School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Получение нейлона 6,10 (трюк с нейлоновой нитью)?
Key safety precautions include: Hexane is highly flammable — no open flames; Sebacoyl chloride is corrosive and moisture-sensitive; Hexamethylenediamine is an irritant.
What materials are needed for Получение нейлона 6,10 (трюк с нейлоновой нитью)?
The main materials required are: Hexamethylenediamine, Sebacoyl chloride, Sodium hydroxide (NaOH), Hexane.
What results should I expect from Получение нейлона 6,10 (трюк с нейлоновой нитью)?
A continuous strand of nylon can be pulled from the interface for several meters. The polymer is white, slightly elastic, and strong. The reaction continues as long as both reagents are present.