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Alchemy or Chemistry ?

Alchemy or Chemistry ?. Polymerisation! Polyester paperweights By Adrian KT. What is an ester?. Formed from the condensation of an alcohol and carboxylic acid Esterification Joined by ester linkage. Catalysed by H + ions. What is a Poly ester?. Poly: many

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Alchemy or Chemistry ?

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  1. Alchemy or Chemistry? Polymerisation! Polyester paperweights By Adrian KT

  2. What is an ester? • Formed from the condensation of an alcohol and carboxylic acidEsterification • Joined by ester linkage. • Catalysed by H+ ions

  3. What is a Polyester? • Poly: many • Many ester molecules joining to form a single, long-chained polyester • Joined by the ester linkage • Can be used as fabric (soft), or as fiberglass (hard)

  4. Creating polyesters • Chemical lists: Unsaturated Polyester Resin  Methyl Ethyl Ketone Peroxide  FK8 (mold releasing agent)

  5. Creating polyesters • Procedures: • Weigh 80g of unsaturated polyester resin into a paper cup. • Add 0.8g of methyl ethyl ketone peroxide into the cup and stir well with a glass rod. • Spray the mould with FK8 • Add your own ‘decorations’ and pour the resin into the mould. • Allow the resin to settle and harden.

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