슬라임 합성(가교 PVA)

폴리비닐알코올을 가교결합하여 비뉴턴 유체 만들기

Organic Synthesis Beginner (Middle School) 20 분 ~$5.00

목표

폴리비닐알코올(PVA)을 붕산나트륨으로 가교결합하여 슬라임을 만들고, 고분자 화학과 비뉴턴 유체 거동을 실증한다.

배경

When sodium borate (borax) is added to polyvinyl alcohol, borate ions form cross-links between PVA polymer chains, creating a viscoelastic material known as slime. The product exhibits non-Newtonian behavior: it flows slowly under gravity but breaks when pulled sharply.

안전 경고

  • Borax is an irritant — avoid eye contact
  • Wash hands after handling slime
  • Do not eat the slime

필수 개인 보호 장비

goggles

재료

  • Polyvinyl alcohol (PVA) solution (50 mL)
    4% solution or white school glue
  • Sodium borate (borax) (5 g)
    Dissolved in 50 mL water
  • Food coloring (2-3 drops)
    Optional

장비

250 mL beaker Stirring rod Measuring cylinder

실험 절차

1

Pour 50 mL of PVA solution (or white school glue) into the beaker.

1 분
2

Add 2-3 drops of food coloring if desired and stir.

1 분
3

Slowly add the borax solution to the PVA while stirring continuously.

3 분
4

Continue stirring as the mixture thickens into slime. Knead with hands once it forms.

5 분 Wash hands afterward
5

Test the non-Newtonian properties: roll into a ball, let it flow slowly, pull sharply to see it snap.

5 분
6

Experiment with the ratio of borax to PVA to change slime consistency.

5 분

예상 결과

A stretchy, squishy slime that flows slowly under gravity but breaks when pulled quickly. More borax makes stiffer slime; less makes it more fluid. The cross-linking is reversible — slime will slowly become more liquid over days.

정리

Slime can be disposed of in the trash. Wash hands with soap and water. Rinse beaker with warm water.

세부 정보

카테고리
Organic Synthesis
난이도
Beginner (Middle School)
소요 시간
20 분
예상 비용
$5.00
단계
6
재료
3

더 많은 실험

아세트산에틸의 피셔 에스테르화 90 min 아세트아미노펜(파라세타몰) 조제 80 min 아스피린(아세틸살리실산) 합성 90 min 루미놀 합성 120 min 식물성 기름에서 바이오디젤 생산 60 min 비누화 반응으로 비누 만들기 60 min 차에서 카페인 추출 90 min 바나나 오일(아세트산이소아밀) 합성 90 min 알돌 축합(디벤잘아세톤) 75 min 나일론 6,10 합성(나일론 로프 트릭) 30 min

Frequently Asked Questions

What is the objective of 슬라임 합성(가교 PVA)?
폴리비닐알코올(PVA)을 붕산나트륨으로 가교결합하여 슬라임을 만들고, 고분자 화학과 비뉴턴 유체 거동을 실증한다.
How difficult is 슬라임 합성(가교 PVA)?
This experiment is rated as Beginner (Middle School). It takes approximately 20 minutes to complete.
What safety precautions are needed for 슬라임 합성(가교 PVA)?
Key safety precautions include: Borax is an irritant — avoid eye contact; Wash hands after handling slime; Do not eat the slime.
What materials are needed for 슬라임 합성(가교 PVA)?
The main materials required are: Polyvinyl alcohol (PVA) solution, Sodium borate (borax), Food coloring.
What results should I expect from 슬라임 합성(가교 PVA)?
A stretchy, squishy slime that flows slowly under gravity but breaks when pulled quickly. More borax makes stiffer slime; less makes it more fluid. The cross-linking is reversible — slime will slowly become more liquid over days.