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| Monomer | CH2=CH2 |
|---|---|
| Polymer | ~CH2CH2CH2CH2CH2CH2~ |
| Polymer Name | polyethylene |
| Some Uses | plastic bags, bottles, toys, electrical insulation |
What is polymerization and its types?
Polymerization Reactions The chemical reaction in which high molecular mass molecules are formed from monomers is known as polymerization. There are two basic types of polymerization, chain-reaction (or addition) and step-reaction (or condensation) polymerization.
What is meant by polymerisation?
Polymerization, any process in which relatively small molecules, called monomers, combine chemically to produce a very large chainlike or network molecule, called a polymer. The monomer molecules may be all alike, or they may represent two, three, or more different compounds.
What is Polymer Class 8?
Answer: A polymer is made up of small units called monomers that combine under specific conditions. Example: Cotton, jute, silk and wool.
What is a monomer definition?
Monomer, a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers. The essential feature of a monomer is polyfunctionality, the capacity to form chemical bonds to at least two other monomer molecules.
What is polymerization give an example class 11?
Polymerization is a process through which a large number of monomer molecules react together to form a polymer. Polyethylene, which is one of the most commercially important polymers, is prepared via such a polymerization process (the reactant monomer used here is ethylene).
What happens during polymerisation?
Polymerisation is the reaction of monomer molecules to form long chain polymer molecules. A monomer is a small reactive molecule that can be joined with other monomers to form long chains. These long chain molecules can be made up from tens of thousands of monomers joined together.
What are the general properties of polymers?
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.
Is Silk a polymer?
Silk is a natural polymer originating from various insect and spider species.
Is cotton a polymer?
Cotton fibers are the purest form of cellulose, nature’s most abundant polymer. Nearly 90% of the cotton fibers are cellulose.
How many types of polymers are classified?
Polymers can be divided into two types: natural polymers and synthetic polymers. Examples of natural polymers: DNA, proteins, cellulose, starch and natural rubber.
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 type of condensation polymer is PET?
Polyesters such as PET (polyethylene terephthalate) are condensation polymers. The formation of a polyester follows the same procedure as in the synthesis of a simple ester.
What is polymerization class 10th?
Polymerization is the process of connecting these monomers together and creating large macromolecules of different sizes and shapes. Polymerization is similar to constructing a large building out of the same type of Lego blocks.
Is PVC a polymer?
What is PVC (PolyVinyl Chloride)? Polyvinyl Chloride (PVC or Vinyl) is an economical and versatile thermoplastic polymer widely used in building and construction industry to produce door and window profiles, pipes (drinking and wastewater), wire and cable insulation, medical devices, etc.
How do polymers work?
Assorted combinations of heat, pressure and catalysis alter the chemical bonds that hold monomers together, causing them to bond with one another. Most often, they do so in a linear fashion, creating chains of monomers called polymers. Co-polymers can be formed using two or more different monomers.
What are the 2 types of polymers?
Polymers may be naturally found in plants and animals (natural polymers) or may be man-made (synthetic polymers). Different polymers have a number of unique physical and chemical properties due to which they find usage in everyday life.
What is a polymer used for?
Uses of polymers Polymers are used in almost every area of modern living. Grocery bags, soda and water bottles, textile fibers, phones, computers, food packaging, auto parts, and toys all contain polymers. Even more-sophisticated technology uses polymers.
How polymers are formed?
Polymers are formed by two main ways called addition and condensation polymerization. In addition, polymerization, an initiator (or catalyst) reacts with a starting monomer. In condensation polymerization, a monomer with an exposed H (hydrogen) atom binds with a monomer with exposed OH (oxygen-hydrogen) atoms.
What is polymerization give example?
A polymer is a large single chain-like molecule in which the repeating units derived from small molecules called monomers are bound together. The process by which monomers are transformed into a polymer is called polymerisation. For example ethylene polymerizes to form polyethylene.
What is a polymer simple definition?
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 make up many of the materials in living organisms, including, for example, proteins, cellulose, and nucleic acids.
How many classes of polymers are there?
There are 3 principal classes of polymers – thermoplastics, thermosets, and elastomers.
What are the 4 natural polymers?
Natural polymers include silk, hair, proteins and DNA, while synthetic (man-made) polymers include polyethylene, polypropylene and polyester. Addition polymerisation is the creation of a polymer by the adding together of monomers in a repeating pattern, with no resulting by-product.
What are the 7 types of plastics?
The seven types of plastic
- 1) Polyethylene Terephthalate (PETE) Can it be recycled?
- 2) High-Density Polyethylene (HDPE) Can it be recycled?
- 3) Polyvinyl Chloride (PVC – U) Can it be recycled?
- 5) Polypropylene (PP) Can it be recycled?
- 6) Polystyrene or Styrofoam (PS) Can it be recycled?
- 7) OTHER. Can it be recycled?
What is the meaning of polymer?
: a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units.
What are 3 common polymers?
Synthetic Polymers
- Bakelite, the first synthetic plastic.
- Neoprene (a manufactured form of rubber)
- Nylon, polyester, rayon (manufactured forms of silk)
- Polyethylene (plastic bags and storage containers)
- Polystyrene (packing peanuts and Styrofoam cups)
- Teflon.
- Epoxy resins.
- Silicone.
What are 2 types of polymerization?
There are two general types of polymerization reactions: addition polymerization and condensation polymerization. In addition polymerization, the monomers add to one another in such a way that the polymer contains all the atoms of the starting monomers. Ethylene molecules are joined together in long chains.
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. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue.
