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 page 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 hook ....etc

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CASE STUDY OF MATERIAL SELECTION for automobile ppt ....etc

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Bioplastics are plastics derived from renewable biomass sources, such as vegetable fats and oils, corn starch, or microbiota. Bioplastic can be made from agricultural by-products and also from used plastic bottles and other containers using microorganisms. Common plastics, such as fossil-fuel plastics (also called petrobased polymers), are derived from petroleum or natural gas. Production of such plastics tends to require more fossil fuels and to produce more greenhouse gases than the production of biobased polymers (bioplastics). Some, but ....etc

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Today plastic is an industry -greater than steel and aluminum combined. Plastic probably have one of the most spectacular growth history among engineering materials. Within relatively short time of their inception, these versatile materials began to replace metals and woods in variety of applications. Plastics is a product that was invented in early 20 century and now at the dawn of the century disposal of plastic is of great significance. They have taken over from other materials as the material of choice in many sectors of industry and life. ....etc

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I want to go through the case study for site selection for dam engineering geology ppt. ....etc

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PLASTICS EXPLOSION
INTRODUCTION
Synthetic polymers are often referred to as plastics, such as the well-known polyethylene and nylon. However, most of them can be classified in at least three main categories: thermoplastics, thermosets and elastomers.
Man-made polymers are used in a bewildering array of applications: food packaging, films, fibers, tubing, pipes, etc. The personal care industry also uses polymers to aid in texture of products, binding, and moisture retention (e.g. in hair gel and conditioners).
Plast ....etc

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electricity-conducting plastics
abstract
ScienceDaily (Apr. 3, 2010) A new technique developed by Princeton University engineers for producing electricity-conducting plastics could dramatically lower the cost of manufacturing solar panels.
By overcoming technical hurdles to producing plastics that are translucent, malleable and able to conduct electricity, the researchers have opened the door to broader use of the materials in a wide range of electrical devices. ....etc

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i need the ppt of plastic as soil stabilizer
I need the ppt of plastic as soil stabilizer ....etc

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COMMON SYNTHETIC PLASTICS

INRODUCTION
Plastic molecules are made of long chains of repeating units called monomers. The atoms that make up a plastic s monomers and the arrangement of the monomers within the molecule both determine many of the plastic s properties. Plastics are one of the classification of polymers .If a polymer is shaped into hard and tough utility articles by the application of heat and pressure ,it is used as plastic.
Synthetic polymers are often referred to as plastics, such as the well-known ....etc

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Moulds in Casting of Plastics and Thermoforming

Plastics today are larger serving as substitute material in the field of tooling and prototype parts but are being used as engineering materials in their own lights and in many applications, they are doing better job then any other material could do, some authorities claim that the rapid advancement of plastic tooling would have been impossible without the versatility of the epoxyresin.
Plastic tooling offers several advantages over conventional metal tooling. These includes:

1. Lowest cost ....etc

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