SlideShare a Scribd company logo
The Chemistry of
Play-Doh
By Grant “Swagtag” Parker
Basics
 Play-Doh is made
from a basic
substance called
starch.
 To understand how
Play-Doh works, you
must first understand
starches.
Starches
 Two main starches:
~amylose
~amylopectin
 If both of these
compounds are
added, the mixture
will gelatinize.
Retrogradation
 Retrogradation is the process the dough
undergoes when it dries out.
 To keep it moist, you need a retrogradation
inhibitor.
 These are usually waxy starches.
surfactants
 Since the compound is now to sticky,
surfactants are added.
 Must contain hydrophilic and lipophilic
compounds.
 Surfactants make up 1% of the compound.
storage
 Play-Doh must be
kept in air tight
containers.
 If they are not, the
retrogradation
inhibitors will dry out,
causing the
compound to dry out.
Implications
 Play-Doh is FUN!
 It can teach us about
starches, sugars, and
other organic
compounds.
 It’s FUN.
Boring Stuff (Citations)
Wilson, Tracy V.. "How Play-Doh [[#|Modeling]] [[#|Compound]] Works"
19 July 2000. HowStuffWorks.com.
<http://entertainment.howstuffworks.com/play-doh.htm> 12 April 2013
Kids' [[#|Turn]] Central. "Simple Playdoh."
http://www.kidsturncentral.com/crafts/crecipe17.html
USPTO. "Starch-based [[#|modeling]] [[#|compound]]." Patent 6,713,624
http://patft.uspto.gov/netacgi/nph-
Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%
2Fsearch-
bool.html&r=2&f=G&l=50&co1=AND&d=PTXT&s1=%22starch+based+m
odeling+compound%22&OS=%22starch+based+modeling+compound%
22&RS=%22starch+based+modeling+compound%22

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The chemistry of play doh

  • 1. The Chemistry of Play-Doh By Grant “Swagtag” Parker
  • 2. Basics  Play-Doh is made from a basic substance called starch.  To understand how Play-Doh works, you must first understand starches.
  • 3. Starches  Two main starches: ~amylose ~amylopectin  If both of these compounds are added, the mixture will gelatinize.
  • 4. Retrogradation  Retrogradation is the process the dough undergoes when it dries out.  To keep it moist, you need a retrogradation inhibitor.  These are usually waxy starches.
  • 5. surfactants  Since the compound is now to sticky, surfactants are added.  Must contain hydrophilic and lipophilic compounds.  Surfactants make up 1% of the compound.
  • 6. storage  Play-Doh must be kept in air tight containers.  If they are not, the retrogradation inhibitors will dry out, causing the compound to dry out.
  • 7. Implications  Play-Doh is FUN!  It can teach us about starches, sugars, and other organic compounds.  It’s FUN.
  • 8. Boring Stuff (Citations) Wilson, Tracy V.. "How Play-Doh [[#|Modeling]] [[#|Compound]] Works" 19 July 2000. HowStuffWorks.com. <http://entertainment.howstuffworks.com/play-doh.htm> 12 April 2013 Kids' [[#|Turn]] Central. "Simple Playdoh." http://www.kidsturncentral.com/crafts/crecipe17.html USPTO. "Starch-based [[#|modeling]] [[#|compound]]." Patent 6,713,624 http://patft.uspto.gov/netacgi/nph- Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO% 2Fsearch- bool.html&r=2&f=G&l=50&co1=AND&d=PTXT&s1=%22starch+based+m odeling+compound%22&OS=%22starch+based+modeling+compound% 22&RS=%22starch+based+modeling+compound%22