The Gelation of Poly(Vinyl Alcohol) with Na^sub 2^B^sub 4^O^sub 7^.10H^sub 2^O: Killing Slime1

The Gelation of Poly(Vinyl Alcohol) with Na^sub 2^B^sub 4^O^sub 7^.10H^sub 2^O: Killing Slime1

The gelation of poly(vinyl alcohol), PVA, with sodium tetraborate decahydrate (borax) to produce "slime" is a popular chemistry demonstration. Since the borate serves to cross-link the PVA, the degree of cross-linking can be varied by changing the borate concentration. McLaughlin et al det...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of chemical education 1997-01, Vol.74 (1), p.97
Hauptverfasser: McLaughlin, K W, Wyffels, N K, Jentz, A B, Keenan, M V
Format: Artikel
Sprache:eng
Schlagworte:
Alcohols
Borax
Change Agents
Chemistry
Crosslinking
Gelation
Gels
Laboratory Experiments
Molecular Structure
Organic chemistry
Polyvinyl alcohol
Slime
Sodium
Sodium tetraborate
Sulfuric acid
Viscosity
Water
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The gelation of poly(vinyl alcohol), PVA, with sodium tetraborate decahydrate (borax) to produce "slime" is a popular chemistry demonstration. Since the borate serves to cross-link the PVA, the degree of cross-linking can be varied by changing the borate concentration. McLaughlin et al detail the three stages of experiment that include to destroy an increasing fraction of the cross-links by increasing the amount of a strong acid added to the gels across the series--essentially titrating the gel.
ISSN:0021-9584
1938-1328