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PLASTICS

PLASTICS. By: Mohd Rosdi bin Ridzwan 91137 School of Education Studies. IS THIS PLASTICS?. PLASTICS. NON-PLASTICS. PLASTICS. NON-PLASTICS. NON-PLASTICS. NON-PLASTICS. PLASTICS. PLASTICS. SKIP. MADE BY PLASTICS. MADE BY NON-PLASTICS. Plastics properties

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PLASTICS

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  1. PLASTICS By: MohdRosdi bin Ridzwan 91137 School of Education Studies

  2. IS THIS PLASTICS? PLASTICS NON-PLASTICS PLASTICS NON-PLASTICS NON-PLASTICS NON-PLASTICS PLASTICS PLASTICS SKIP

  3. MADE BY PLASTICS MADE BY NON-PLASTICS

  4. Plastics properties • Classification of plastic - Thermoplastic - Thermosetting palstic • Characteristic • Example of plastics • Activity • Effect of improper disposal of plastics

  5. PLASTICS • WHAT IS PLASTICS? • Plastic is a synthetic polymer which consist monomers that combine togather to form new molecule known as polymer • Plastic is from by the process of polymerisation of monomers from petroleum or natural gas. BACK

  6. monomers polymer BACK

  7. Example: monomers and its polymer BACK

  8. Classify of Plastics BACK

  9. Thermoplastics • Plastic that cannot withstand heat. • Consist of molecules withoutcross links between their polymers. • The molecular structure easy slide over when heated. • Soft when heated and can be mould repeatly. • Can be recycle to form new substances. • Example: polythene, perspex, PVC, polystyrene BACK

  10. Characteristics Thermoplastics Characteristic • Low melting & boiling point • Good electric insulator • Can be mould repeatly • Can withstand chemicals(acid/alkalis) • Dissolve in organic solvents • Colourless BACK

  11. Example of thermoplastics: polyethene, polyvinyl chloride, polystyrene. PVC polystyrene polyethene BACK

  12. Thermosetting plastics • Heat resistance plastics • Have cross link between their polymers • Cross link prevent them from sliding over one another when heated. • Can be moulded once only and cannot be recycle. BACK

  13. Characteristic Thermosetting Plastics Characteristic • High melting & boiling point • Good electric insulator • Good heat insulator • Can be mould once • Can withstand chemicals(acid/alkalis) • Do not dissolve in organic solvents BACK

  14. Example of thermosetting plastics: bakelite, melamine, epoxy glue Melamine bakelite Epoxy glue BACK

  15. Differences BACK

  16. Example & uses of pastics BACK

  17. ACTIVITY Plastics made from polymerization of or natural gas. Combination monomers known as Two classification of plastic are and thermosetting plastics. Plastics is good insulator. Thermosetting plastics have that prevent it sliding over when heated. Thermoplastics have melting point. Thermoplastics can be many times. PVC, polystyrene and are the example of thermoplastics. 3 4 8 5 T H E R M O P L A S T I C S L O R E L O 1 C Y S P E T R O L E U M S R T 2 P O L Y M E R I H I C E N N 6 K 7 R E C Y C L E O W BACK

  18. Effect of improper disposal of plastic BACK

  19. Air Pollution CO SO2 H SO4 CO2 • NO2 BACK

  20. Water & Land pollution BACK

  21. Way to control the disposal of plastics Way to control the disposal of plastics BACK

  22. THE END THANK YOU

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