나일론 6,10 합성(나일론 로프 트릭)
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계면에서 나일론 실 연속으로 뽑아내기
목표
두 비혼화성 용액의 계면에서 나일론 6,10을 합성하고 비커에서 연속적인 실을 뽑아낸다.
배경
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.
안전 경고
- Hexane is highly flammable — no open flames
- Sebacoyl chloride is corrosive and moisture-sensitive
- Hexamethylenediamine is an irritant
- Work in a fume hood
필수 개인 보호 장비
재료
-
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
장비
실험 절차
Prepare the aqueous solution: dissolve 3 g hexamethylenediamine and 1 g NaOH in 50 mL water in the beaker.
Carefully layer the sebacoyl chloride/hexane solution on top of the aqueous solution. Do not mix.
Observe the nylon film forming at the interface between the two layers.
Using forceps, gently pull the nylon film from the center of the interface. A continuous strand should follow.
Wind the nylon strand around a glass rod, continuously pulling from the interface.
Rinse the collected nylon with water and blot dry. Examine the fiber properties.
예상 결과
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.
정리
Allow remaining solution to react. Dispose of hexane waste in organic solvent waste. Neutralize the aqueous layer. Rinse all glassware.
세부 정보
- 카테고리
- Organic Synthesis
- 난이도
- Intermediate (High School)
- 소요 시간
- 30 분
- 예상 비용
- $18.00
- 단계
- 6
- 재료
- 4