Table of Contents
Commercial Uses of Polymers Polymer Monomer Uses of Polymer Rubber Isoprene (1, 2-methyl 1 – 1, 3-butadiene) Making tyres, elastic materials BUNA – S (a) 1, 3-butadiene (b) Styrene Synthetic rubber BUNA – N (a) 1, 3-butadiene (b) Vinyl Cyanide Synthetic rubber Teflon Tetra Flouro Ethane Non-stick cookware – plastics.
What are the 4 types of polymers?
Terms. Synthetic polymers are human-made polymers. From the utility point of view, they can be classified into four main categories: thermoplastics, thermosets, elastomers, and synthetic fibers.
What are the main types of polymers?
There are 3 principal classes of polymers – thermoplastics, thermosets, and elastomers. Differentiation between these classes is best defined by their behaviour under applied heat. Thermoplastic polymers can be either amorphous or crystalline.
What are 2 types of polymer?
Polymers fall into two categories: thermosetting plastic or thermoset. thermoforming plastic or thermoplastic.
What do you mean by polymer?
polymer, any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, that are multiples of simpler chemical units called monomers. Polymers are not restricted to monomers of the same chemical composition or molecular weight and structure.
What are the classification of polymers?
The most common way of classifying polymers is to separate them into three groups – thermoplastics, thermosets, and elastomers. The thermoplastics can be divided into two types – those that are crystalline and those that are amorphous.
What are 3 properties of polymers?
A1.1 PHYSICAL PROPERTIES Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on.
What is polymers and their uses?
Uses of polymers Polymer Properties Uses Poly(chloroethene) ‘PVC’ Tough, electrical insulator, can be made hard or flexible Insulation for electrical wires, windows, gutters, pipes Poly(tetrafluoroethene) ‘PFTE’ Slippery, chemically unreactive Non-stick coatings for pans, containers for laboratory substances.
What are the characteristics of polymer?
Some of the useful properties of various engineering polymers are high strength or modulus to weight ratios (light weight but comparatively stiff and strong), toughness, resilience, resistance to corrosion, lack of conductivity (heat and electrical), color, transparency, processing, and low cost.
What are some useful polymers?
Shikha Goyal S. No. Polymer Use 1. Polythene Packaging, material, carry bags, bottles. 2. Teflon Nonstick Kitchen ware 3. Polypropene Bottles, Crates 4. Melamine Crockery.
What is difference between plastic and polymer?
The key difference between polymers and plastics is that plastic is a specific type of polymer. Plastics are comprised of a long chain of polymers, where polymers are composed of smaller, uniform molecules. Polymers are basically enormous molecules made with a massive amount of smaller, identical molecules.
What is an example of a thermosetting polymer?
Common examples of thermoset plastics and polymers include epoxy, silicone, polyurethane and phenolic. Different thermosets provide different advantages when used as a production material. For example, epoxies are highly elastic, tough and resistant to many chemicals while phenolic is highly flame resistant.
What is a polymer melt?
Polymer melts are solvent-free, viscoelastic liquids consisting of entangled macromolecules with a monomer volume fraction ηm=πρmb3/6 comparable with that of simple liquids.
Which is the best definition of polymer?
A polymer is a very large, chain-like molecule made up of monomers, which are small molecules. It can be naturally occurring or synthetic. Since poly- means “many,” a polymer means “many parts.” You’ll find polymers everywhere: they’re what make spandex stretch and sneakers bounce.
What is an example of polymer?
Examples of synthetic polymers include nylon, polyethylene, polyester, Teflon, and epoxy. Natural polymers occur in nature and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.
Is cotton a polymer?
Cotton is a polymer which is made up of cellulose. Cellulose is a carbohydrate which is also a polymer of repeated chains of glucose.
What is the structure of polymers?
A polymer is composed of many simple molecules that are repeating structural units called monomers. A single polymer molecule may consist of hundreds to a million monomers and may have a linear, branched, or network structure.
What are polymers write classification of polymers and their uses?
Commercial Uses of Polymers Polymer Monomer Uses of Polymer Rubber Isoprene (1, 2-methyl 1 – 1, 3-butadiene) Making tyres, elastic materials BUNA – S (a) 1, 3-butadiene (b) Styrene Synthetic rubber BUNA – N (a) 1, 3-butadiene (b) Vinyl Cyanide Synthetic rubber Teflon Tetra Flouro Ethane Non-stick cookware – plastics.
What are the classification of polymers based on structure?
Polymers can be classified into three main types based on structure. These are linear polymers, branched chain polymers and cross- linking polymers. Linear polymers are formed of long, straight chains.
What are the advantages of polymers?
Polymers are more resistant to chemicals than their metal counterparts. Polymer parts do not require post-treatment finishing efforts, unlike metal. Polymer and composite materials are up to ten times lighter than typical metals. Polymers are naturally radar absorbent as well as thermally and electrically insulating.
How do you change the properties of polymers?
Overall, the main ways to change and tune the properties of a polymer include changing the length of the polymer chains, creating branched chains from linear polymer chains, crosslinking the polymer chains and adding plasticizers into the polymer.
What is the common name for polymers?
Addition Polymers Chemical Name Trade Name or Common Name polyethylene poly(tetrafluoroethylene) Teflon polypropylene Herculon polyisobutylene butyl rubber.
What polymer is the most important?
By far the most important industrial polymers (for example, virtually all the commodity plastics) are polymerized olefins.
How polymers are useful in daily life?
Product made from polymers are all around us: clothing made from synthetic fibers, polyethylene cups, fiberglass, nylon bearings, plastic bags, polymer-based paints, epoxy glue, polyurethane foam cushion, silicone heart valves, and Teflon-coated cookware. Polymers are obtained through chemical reaction of monomers.
What kinds of polymers do you use daily?
Polymers become the raw materials for products we now use every day, including: synthetic clothing, fiberglass, plastic bags, nylon bearing, polyethylene cups, epoxy glue, silicone heart valves, Teflon-coated cookware and our personal favorite, polymer based paints.
Does polymer mean plastic?
Plastics are a group of materials, either synthetic or naturally occurring, that may be shaped when soft and then hardened to retain the given shape. Plastics are polymers. The word polymer comes from two Greek words: poly, meaning many, and meros, meaning parts or units.
Is polymer a metal or plastic?
The key difference between polymers and metals is that the polymers are lightweight materials compared to metals. If we take a ball made of a polymer material such as plastic and a ball made of a metal with the same size, we can observe that the metal ball is heavier than the plastic ball.
Why plastic is known as polymer?
Plastics are considered polymers because, like polymers, plastics are high molecular weight compounds containing several repeating units. These repeating units are the basic molecules called monomers. Polythene contains more than 50000 monomers linked together to form a long chain. The monomer is ethylene.
