The original plastic was invented in 1835: Bakelite. It consisted of a resin that melted at 121 degrees Fahrenheit and hardened into a polymer, but the manufacturing process was still limited to large factories with low throughput rates. In 1918, Leo Baekeland developed what he called \This is a short movie about when was plastic invented. Let’s watch it together. If you have any questions, please reply to this news video.
Why are plastics the cheapest?
Plastics and Environment. The process of making plastics from crude oil is a relatively simple and cheap process which explains why among the by-products of oil, plastics are the cheapest. The use of plastics has been a major issue in many countries because of how long they take to decompose.
What is plastic plant?
Plastic is any material made from synthetic or semi-synthetic organic materials that can be molded into different shapes of solid matter.
How does condensation polymerization work?
Condensation polymerization uses a catalyst that causes a monomer to react with the neighboring monomer which forms a dimer (two cells) and a byproduct. The dimers can also combine to form tetramers (four cells). This process goes on and on. The by-products are removed by the reaction to yield meaningful products that include water which is disposed of as well as other by-products that can be recycled and used in the same process. Recycling of the by-products at this stage is necessary to reduce their exposure to people and the environment as they contain harmful chemical compounds. The condensation reaction takes place in a mass of the molten polymer.
Do catalysts initiate chemical reactions?
The catalysts do not initiate the chemical reactions, but they do accelerate it. Polymerization reactions are used for polystyrene and polyvinyl chloride among other compounds. These reactions create no by-products, and they can be done in the gaseous phase spread in liquids.
What are the elements that make up plastic?
Plastics are composed of elements such as carbon, hydrogen, oxygen, nitrogen, chlorine, or sulphur. Each molecule of a piece of plastic consists of thousands of atoms bonded together which gives it a high molecular mass. Plastic is made from natural products such as crude oil, cellulose, natural gas, coal, and salt among others.
How many cells can dimers form?
The dimers can also combine to form tetramers (four cells). This process goes on and on. The by-products are removed by the reaction to yield meaningful products that include water which is disposed of as well as other by-products that can be recycled and used in the same process.
What are the components of plastic?
Most plastics are made from oil, where heavy crude oil is separated into fractions. The fractions are then mixed with chemical compounds consisting of carbon and hydrogen which are called hydrocarbon chains. The hydrocarbon chains differ in molecular size and structure. Naphtha, one of the fractions, is vital for the production of plastic.