A polymer is made up of a number of joined-together monomers. One way of thinking about polymers is like a chain of connected-up paperclips. A polymer is a large molecule made up of smaller, joined-together molecules called monomers.
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What is a polymer class 11?
Polymers are defined as high molecular mass macromolecules, which consist of repeating structural units derived from the corresponding monomers. These polymers may be of natural or synthetic origin and are classified in a number of ways.
Which substance is a Polymer found in nature?
Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.
What are the 4 types of polymers?
- Natural Polymers: They occur naturally and are found in plants and animals.
- Semi-synthetic Polymers:
- Synthetic Polymers:
- Linear Polymers.
- Branched-chain Polymers.
- Cross-linked Polymers.
- Classification Based on Polymerization.
- Classification Based on Monomers.
What are the 3 main types of polymers?
There are 3 principal classes of polymers โ thermoplastics, thermosets, and elastomers. Differentiation between these classes is best defined by their behaviour under applied heat.
What are polymers PDF?
Polymers are made up of smaller repeating units, called monomers, which are linked together by covalent bonds. The polymerization processes by which polymers are synthesized fall into two categories. Addition polymers are formed by addition reactions that link together monomers containing multiple bonds.
What are 3 properties of polymers?
Some of the useful properties of various en- gineering 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.
Is DNA a polymer?
DNA consists of two long polymers (called strands) that run in opposite directions and form the regular geometry of the double helix. The monomers of DNA are called nucleotides.
Is Diamond a polymer?
Many inorganic polymers also are found in nature, including diamond and graphite. Both are composed of carbon.
What is a polymer in human body?
Some of the examples of natural polymers are proteins and nucleic acid that occur in human body, cellulose, natural rubber, silk, and wool. Starch is a natural polymer that is made up of hundreds of glucose molecules, similarly natural rubber is a polymer obtained from the latex of a rubber tree.
Is glass a polymer?
The majority of glass is formed of sand, and when we melt it down, we generally add sodium carbonate. This results in a more durable glass. This is the glass you see in jars and windows every day, and it’s also the glass used in composites. hence it is not a polymer.
What are the 4 types of monomers?
There are four main types of monomer, including sugars, amino acids, fatty acids, and nucleotides. Each of these monomer types play important roles in the existence and development of life, and each one can be synthesized abiotically.
Is protein A polymer?
Definition. Proteins are polymers in which the 20 natural amino acids are linked by amide bonds.
Is glucose A polymer?
Glycogen is a glucose polymer that is primarily stored in the liver and muscle and is required for glucose homeostasis during fasting.
Is rubber a polymer?
Natural rubber is produced from plants and is classified as a polymer. A polymer is a chemical compound with large molecules made of many smaller molecules of the same kind.
Why is DNA a polymer?
DNA is a polymer due to the fact it contains multiple repeating units (monomers). These monomers are known as nucleotides. Multiple nucleotides join together by phosphodiester bonds to form the polymer that is DNA.
What is the name of polymer?
Polymers. Addition polymers such as polyethylene, polypropylene, poly(vinyl chloride), and polystyrene are linear or branched polymers with little or no cross-linking.
What are the 7 types of polymers?
The seven most common types of synthetic organic polymers are: low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), nylon, Teflon, and thermoplastic polyurethane (TPU).
Where are polymers used?
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.
What is classification of polymer?
Based on molecular forces, polymers are classified as elastomers, fibers, thermoplastics, and thermosetting polymers.
What are the 2 kinds of polymers?
Polymers are of two types: naturally occurring and synthetic or man made.
What are basic polymers?
The four basic polymer structures are linear, branched, crosslinked, and networked. Diagrams of linear, branched, crosslinked, and networked polymer structures.
What is polymer PPT?
E.g. : Cotton , silk , wool , rubber . ๏ Synthetic Polymer :- Polymers which are synthesized from low molecular weight compounds are called as Synthetic Polymers . E.g. : Polyethylene , nylon , terylene.
Why are polymers useful?
Polymers help us to save energy, with lighter vehicles and insulated buildings; package consumable goods; reduce land use and fertilisers, thanks to synthetic fibres; preserve other materials using coatings; and save lives by way of countless medical applications.
What are 4 properties of polymers?
Properties of polymers such as high tensile strength, strain, elasticity, toughness determine their uses. More complex polymers form strong bonds, and hence, they are strong enough to withstand high force and pressure.