Sümüklü Oyun Hamuru Sentezi (Çapraz Bağlı PVA)

Polivinil alkol çapraz bağlayarak Newton-dışı akışkan oluşturma

Organic Synthesis Beginner (Middle School) 20 dak ~$5,00

Hedef

Polivinil alkol (PVA) ile sodyum borat arasındaki çapraz bağlama reaksiyonuyla sümüklü hamur oluşturmak; polimer kimyasını ve Newton-dışı akışkan davranışını göstermek.

Arka Plan

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.

Güvenlik Uyarıları

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

Gerekli KKD

goggles

Malzemeler

  • 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

Ekipman

250 mL beaker Stirring rod Measuring cylinder

Prosedür

1

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

1 dak
2

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

1 dak
3

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

3 dak
4

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

5 dak Wash hands afterward
5

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

5 dak
6

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

5 dak

Beklenen Sonuçlar

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.

Temizlik

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

Ayrıntılar

Kategori
Organic Synthesis
Zorluk
Beginner (Middle School)
Süre
20 dak
Tahmini Maliyet
$5,00
Adımlar
6
Malzemeler
3

Daha Fazla Deney

Aldol Kondenzasyonu (Dibenzalaseton) 75 min Asetaminofen (Parasetamol) Sentezi 80 min Aspirin (Asetilsalisilik Asit) Sentezi 90 min Bitkisel Yağdan Biyodizel Üretimi 60 min Çaydan Kafein Ekstraksiyonu 90 min Etil Asetatın Fischer Esterifikasyonu 90 min Luminol Sentezi 120 min Muz Aroması (İzoamil Asetat) Sentezi 90 min Naylon 6,10 Yapımı (Naylon İp Hilesi) 30 min Sabunlaşma ile Sabun Yapımı 60 min

Frequently Asked Questions

What is the objective of Sümüklü Oyun Hamuru Sentezi (Çapraz Bağlı PVA)?
Polivinil alkol (PVA) ile sodyum borat arasındaki çapraz bağlama reaksiyonuyla sümüklü hamur oluşturmak; polimer kimyasını ve Newton-dışı akışkan davranışını göstermek.
How difficult is Sümüklü Oyun Hamuru Sentezi (Çapraz Bağlı PVA)?
This experiment is rated as Beginner (Middle School). It takes approximately 20 minutes to complete.
What safety precautions are needed for Sümüklü Oyun Hamuru Sentezi (Çapraz Bağlı 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 Sümüklü Oyun Hamuru Sentezi (Çapraz Bağlı PVA)?
The main materials required are: Polyvinyl alcohol (PVA) solution, Sodium borate (borax), Food coloring.
What results should I expect from Sümüklü Oyun Hamuru Sentezi (Çapraz Bağlı 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.