Thejaswini

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Thejaswini

  1. 1. CONTENTS:  History  Definition  Classification  Advantages  Disadvantages  Recycling  Conclusion
  2. 2. HISTORY:  The first fully synthetic rubber was synthesized by Sergei Lebedev in 1910.  In 1941, annual production of synthetic rubber in the U.S. was only 231 tonnes which increased to 840,000 tonnes in 1945.  The plastic material parkesine was patented by Alexander Parkes, In Birmingham, UK in 1856.[13] It was unveiled at the 1862 Great International Exhibition in London. Sergei lebedev
  3. 3. CLASSIFICATION OF PLASTICS:
  4. 4. RECYCLING:
  5. 5. ACKNOWLEDGEMENT I would like to thank : - Our Correspondent Thejomurthy sir. My special thanks to our Chemistry Faculties: - Prasad sir, Nalini mam who encourages me. Am also thankful to My Friends: - R.Vishnu Priya, M.Asha who helped me to do this project.

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