History of Polymer and Plastics
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
project report helper
Active In SP
**

Posts: 2,270
Joined: Sep 2010
#1
08-10-2010, 10:50 AM



.docx   abstractp8.docx (Size: 72.91 KB / Downloads: 63)


History of Polymer and Plastics

History of Plastics and Polymers

Plastics are polymers. What is a polymer? The most simple definition of a polymer is something made of many units. Think of a polymer as a chain. Each link of the chain is the "mer" or basic unit that is made of carbon, hydrogen, oxygen, and/or silicon. To make the chain, many links or "mers" are hooked or polymerized together. Polymerization can be demonstrated by linking strips of construction paper together to make paper garlands or hooking together hundreds of paper clips to form chains.
Polymers have been with us since the beginning of time. Natural polymers include such things as tar and shellac, tortoise shell and horns, as well as tree saps that produce amber and latex. These polymers were processed with heat and pressure into useful articles like hair ornaments and jewelry. Natural polymers began to be chemically modified during the 1800s to produce many materials. The most famous of these were vulcanized rubber, gun cotton, and celluloid. The first semi-synthetic polymer produced was Bakelite in 1909 and was soon followed by the first synthetic fiber, rayon, which was developed in 1911.
Even with these developments, it was not until World War II that significant changes took place in the polymer industry. Prior to World War II, natural substances were generally available; therefore, synthetics that were being developed were not a necessity. Once the world went to war, our natural sources of latex, wool, silk, and other materials were cut off, making the use of synthetics critical. During this time period, we saw the use of nylon, acrylic, neoprene, SBR, polyethylene, and many more polymers take the place of natural materials that were no longer available. Since then, the polymer industry has continued to grow and has evolved into one of the fastest growing industries in the U.S. and in the world.



Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Polymer Chemistry PPT project girl 1 1,807 03-02-2014, 12:46 PM
Last Post: Edwardpt
  SEMINAR ON POLYMER SCIENCE PPT study tips 0 727 02-07-2013, 04:32 PM
Last Post: study tips
  COMMON SYNTHETIC PLASTICS REPORT study tips 0 374 22-05-2013, 04:41 PM
Last Post: study tips
  THERMAL CRACKING OF THE MODEL SEVEN COMPONENTS MIXED PLASTICS INTO OILS/WAXES Report study tips 0 451 27-02-2013, 02:49 PM
Last Post: study tips
  POLYMER MODIFIED STEEL FIBRE REINFORCED CONCRETE seminar tips 0 828 31-01-2013, 03:48 PM
Last Post: seminar tips
  Polymer Systems pdf project girl 0 398 01-12-2012, 01:21 PM
Last Post: project girl
  ppt on Polymer Chemistry project girl 0 568 21-11-2012, 01:36 PM
Last Post: project girl
  Bottom and Charm Masses and Lifetimes at the Tevatron; and a Pentaquark Search seminar flower 0 284 27-10-2012, 12:05 PM
Last Post: seminar flower
  Novel, Solvent Free, Single Ion Conductive Polymer Electrolytes seminar flower 0 490 24-10-2012, 11:25 AM
Last Post: seminar flower
  LIQUID CRYSTAL POLYMER IN MEMS APPLICATIONS project uploader 0 629 18-08-2012, 12:51 PM
Last Post: project uploader