Presentation on theme: "The Beauty of Polymer Clay"— Presentation transcript:
1 The Beauty of Polymer Clay Xperimania IIMeriliis Kuuslap (form 10)Margred Kõima (form 10)Indrek Virro (form 11)Tartu Karlova GymnasiumEstonia2009
2 The Idea of the ProjectThe idea was formed after we had made some ornaments, having used polymer clay (“Fimo”). What do we know about the properties and composition of “Fimo”? How is it possible to apply that material? These were the respective questions.
3 What is “Fimo”?“Fimo” is a name for a brand of polymer clay made by Eberhard Faber. According to information by Eberhard Faber, “Fimo” contains polyvinyl chloride (PVC), which is a widely used thermoplastic polymer. It can be made softer and more flexible by the addition of plasticizers, the most widely-used phthalates.
4 Testing Polymer Clay’s Properties I Demo-experiment: pyrolysis of PVC-based polymer clay (“Fimo“) To see what happens when “Fimo” is overheated, it is necessary to do an experiment. When pyrolysing polymer clay “Fimo”, among the products might be unsaturated hydrocarbons and hydrochloric acid.
9 Testing hydrochloric acid Universal indicator has changed its colourThe product is very acidic: pH 1,0
10 The ConclusionBy pyrolysing polymer clay we identified the products: unsaturated hydrocarbons, char and hydrochloric acid.If “Fimo” is overheated there may appear irritating or toxic products
11 Testing Polymer Clay’s Properties II: Hands-on Acitvity When we were making the ornaments we acknowledged several properties of “Fimo”We chose cornflower for Xperimania experiment because it is the national flower of Estonia
12 Polymer Clay Cornflower In the warmth of human hand, the polymer clay changes into soft and plastic material.