POLYSTYRENE
INTRODUCTION <ul><li>Polystyrene is a vinyl polymer. </li></ul><ul><li>It has along hydrocarbon chain with a phenyl group ...
 
RHEOLOGICAL BEHAVIOUR <ul><li>Non-Newtonion fluid  with viscoelastic properties. </li></ul><ul><li>The viscosity of polyst...
<ul><li>Electrical properties: Very good electrical insulators </li></ul><ul><li>Mechanical properties: low impact strengt...
Effect of Pressure
Viscosity and Shear rate
Mechanical properties
Thermal properties
ADVANTAGE & DISADVANTAGE <ul><li>Clear  </li></ul><ul><li>Hard </li></ul><ul><li>Easily process </li></ul><ul><li>Low cost...
APPLICATION <ul><li>Electrical </li></ul><ul><li>Electronic </li></ul><ul><li>Automotive </li></ul><ul><li>Industrial film...
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Polymeric presentation

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Polymeric presentation

  1. 1. POLYSTYRENE
  2. 2. INTRODUCTION <ul><li>Polystyrene is a vinyl polymer. </li></ul><ul><li>It has along hydrocarbon chain with a phenyl group attached to every other carbon atom. </li></ul><ul><li>Produced by free radical vinyl polymerization, from the monomer styrene. </li></ul><ul><li>Thermoplastic material </li></ul><ul><li>Amorphous polymer </li></ul>
  3. 4. RHEOLOGICAL BEHAVIOUR <ul><li>Non-Newtonion fluid with viscoelastic properties. </li></ul><ul><li>The viscosity of polystyrene melts or solutions is defined as the ratio of shear stress to shear </li></ul><ul><li>rate. </li></ul>
  4. 5. <ul><li>Electrical properties: Very good electrical insulators </li></ul><ul><li>Mechanical properties: low impact strength </li></ul><ul><li>Thermal properties: Tg of unmodified 373K between 90-110 °C </li></ul><ul><li>Optical properties: naturally white </li></ul><ul><li>Low toxic product </li></ul>
  5. 6. Effect of Pressure
  6. 7. Viscosity and Shear rate
  7. 8. Mechanical properties
  8. 9. Thermal properties
  9. 10. ADVANTAGE & DISADVANTAGE <ul><li>Clear </li></ul><ul><li>Hard </li></ul><ul><li>Easily process </li></ul><ul><li>Low cost </li></ul><ul><li>Low impact strength </li></ul><ul><li>Poor chemical resistance at room temperature </li></ul>
  10. 11. APPLICATION <ul><li>Electrical </li></ul><ul><li>Electronic </li></ul><ul><li>Automotive </li></ul><ul><li>Industrial films </li></ul><ul><li>Food packaging </li></ul>

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