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Rough Science 2
 

Paper and Ink Challenge Glossary

 

Cellulose - A carbohydrate forming the main constituent of plant cell walls.


Amount varies between plants - Cotton and flax have high cellulose contents, as do trees. Some plants have very little cellulose content making them unsuitable for papermaking.


Lye (NaOH) - Can be used to break down insoluble fat into fatty acids and glycerol, which are both soluble in water.


Lime (CaOH) - Formed from calcium carbonate in sea shells. Sea shells were put on the kiln and when hot were ground to a powder.


Potassium carbonate (K2CO3) - Was contained in ashes from the fire.


Tannic Acid - A natural organic compound of a yellowish colour used as a mordant and astringent.


Iron sulfate was made by dissolving iron filings in sulfuric acid from a car battery and warming to precipitate iron sulphate.


Tannin - We experimented using tea and logwood as a source of tannin.


This black pigment is called ferrogallotannate or ferrotannate.


Content last updated: 14/09/2006

 

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