1. MADE BY :- SHRADDHA DEBNATH(28) RIYA DHINGRA (27) RISHITA YADAV(26) SHUBHAM DAHIYA(29) SIDDHANT KAUL(30) 1

2. What is P.E.T ?What is P.E.T made of ?  The term polyethylene terephthalate is a source of confusion because this substance, PET, does not contain polyethylene. Thus, the alternate form, poly(ethylene terephthalate), is often used in scholarly journals for the sake of accuracy and clarity polyethylene 2 Riya Dhingra

3. 3 Physical Properties.  Molecular formula:(C10H8O4)n  Molar mass:variable  Density:1.38 g/cm3 (20 °C)  Amorphous:1.370 g/cm3  Single crystal:1.455 g/cm3  Melting point:250 °C, 260 °C[  Boiling point :350 °C ( decomp.)  Solubility in water practically insoluble  Thermal conductivity 0.15 to 0.24 W m−1 K−1  Refractive index (nD)1.57–1.58,1.5750  Specific heat capacity, C1.0 kJ/(kg·K) Related compounds  Related Monomers Terephthalic acid, Ethyleneglycol Siddhant Kaul & Rishabh Goel

4. Advantages of P.E.T ?  Light in weight.  Can be easily molded.  Corrosion resistant and chemically inert.  Cheap to produce.  Strong and durable.  Does not expand on heating.  Can be manufactured in any size. Disadvantages of P.E.T ? 4 Shraddha Debnath & Shubham Dahiya

5. 5  PET is an excellent barrier material, plastic bottles made from PET are widely used for soft drinks.  PET is also used as substrate in thin film and solar cell.  It is also used for making magnetic tapes, used in audio and video cassette recorders.  P.E.T is also used for making pressure sensitive adhesive tapes. Uses. Rishita Yadav

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7. SUBMITTED TO :- Mrs. NEERAJ PUNIYA 7