Fabrication de Nylon 6,10 (Tour du Fil de Nylon)

Tirage d'un brin continu de nylon depuis une interface

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

Objectif

Synthétiser le nylon 6,10 à l'interface de deux solutions non miscibles et tirer un brin continu hors du bécher.

Contexte

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.

Avertissements de sécurité

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

EPI requis

goggles gloves lab_coat

Matériaux

  • 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

Équipement

250 mL beaker Forceps or glass rod Paper towel

Procédure

1

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

3 min Irritant — avoid contact
2

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

3 min Work in fume hood
3

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

2 min
4

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

5 min
5

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

10 min
6

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

5 min

Résultats attendus

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.

Nettoyage

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

Détails

Catégorie
Organic Synthesis
Difficulté
Intermediate (High School)
Durée
30 min
Coût estimé
$18,00
Étapes
6
Matériaux
4

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Frequently Asked Questions

What is the objective of Fabrication de Nylon 6,10 (Tour du Fil de Nylon)?
Synthétiser le nylon 6,10 à l'interface de deux solutions non miscibles et tirer un brin continu hors du bécher.
How difficult is Fabrication de Nylon 6,10 (Tour du Fil de Nylon)?
This experiment is rated as Intermediate (High School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Fabrication de Nylon 6,10 (Tour du Fil de Nylon)?
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 Fabrication de Nylon 6,10 (Tour du Fil de Nylon)?
The main materials required are: Hexamethylenediamine, Sebacoyl chloride, Sodium hydroxide (NaOH), Hexane.
What results should I expect from Fabrication de Nylon 6,10 (Tour du Fil de Nylon)?
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.