addition and condensation polymerization examples

Step-growth polymerizations can be divided into two lasses: condensation and addition polymerization. The addition-condensation system Addition polymers are those formed from monomers without the loss of a … Notice how every other carbon must have a chlorine attached. They are: • Addition or chain polymerization • Condensation or step polymerization Introduction to Polymers 12 13. – silicones created by polymerisation by condensation; – silicones created by polymerisation by poly-addition. Belonging to the 1 st generation of silicones, polymers obtained through polymerisation by condensation have elasticity, hardness and safety properties that are not ideal. PVC (polyvinyl chloride), which is found in plastic wrap, simulated leather, water pipes, and garden hoses, is formed from vinyl chloride (H 2 C=CHCl). Examples of addition polymers include polyethylene, polystyrene, PVC etc. Polyesters are formed by the reactions between a carboxylic acid containing two carboxyl functional groups and an alcohol containing two hydroxyl groups. Polymerization reactions are the set of chemical reactions in which an initiator or hardener monomer active other monomer starting a chain reaction which forms the polymer.. The following diagrams show Addition Polymerisation (Polyethene) and Condensation Polymerisation (Polyamide, Polyester). An addition polymer is a polymer that forms by simple linking of monomers without the co-generation of other products. The main difference between addition and condensation polymerization is that in former the polymers are formed by the addition of monomers with no by-products while in the latter polymers are formed due to the condensation of two different monomers resulting in the formation of by-products. Polyesters are examples of a polymers produced from condensation polymerisation. Scroll down the page for more examples and explanations. Examples of condensation polymers are Nylon 66, terylene, bakelite, and alkylresins. The following diagrams show Biological Polymers (Amino Acids, Proteins, Glucose, Starch). The following diagrams show Addition Polymerisation (Polyethene) and Condensation Polymerisation (Polyamide, Polyester). Condensation mechanism refers to combining of smaller molecules to obtain larger molecules. Condensation polymers are formed by polycondensation, when the polymer is formed by condensation reactions between species of all degrees of polymerization, or by condensative chain polymerization, when the polymer is formed by sequential addition (by condensation reaction) of monomers to an active site in a chain reaction. 2.What requirement should be provided to achieve high yield and high molecular weight of polymer by condensation reaction? 23 Condensation Examples Molecular weight of addition polymers is integral multiple of monomer’s molecular weight. This summing distinguishes addition polymerization from condensation polymerization in which small molecules are eliminated as the monomers are assembled in … Ziegler-Natta polymerization of ethylene The Ziegler-Natta polymerization of ethyleneEthylene gas is pumped under pressure into a reaction vessel, where it polymerizes under the influence of a Ziegler-Natta catalyst in the presence of a solvent. In addition polymerization, Lewis acids, Lewis bases, and radical initiators are used as catalysts. Chemical reaction - Chemical reaction - Polymerization reactions: Polymers are high-molecular-weight compounds, fashioned by the aggregation of many smaller molecules called monomers. 1.Discuss the differences between condensation and addition polymerization. Ethane diol: 2. Addition polymerization Vs. Condensation Polymerization Explanation: polymerization is a process or phenomenon in which a large number of small molecules are combined to form a big or macromolecule. In condensation polymerization, any molecule can react with any molecules at any given time. Condensation Examples. Some important examples of these substances are discussed in the following sections.There are two general types of polymerization reactions: addition polymerization and condensation polymerization. these small molecules are known as building blocks and called as monomers. Addition polymerization differs from condensation polymerization, which does co-generate a product, usually water. Example 1 Nylon 6,6; Note The nomenclature for nylon is based on the number of carbon atoms in each of the two monomers that make up the nylon molecules. Condensation Polymers 1. Definition: Condensation is a reaction … Chain addition polymerization also referred to as chain-growth polymerization technique is a chain reaction in which the growth of a polymer chain proceeds exclusively by reaction(s) between monomers(s) and active site(s) on the polymer chain with regeneration of the active site(s) at the end of each growth step. The reaction is shown in the graphic on the left. For example, nylon – 66 is obtained by the condensation of two monomers - hexa methylenediamine and adipic acid with the loss of water molecules. 3.What is interfacial polymerization? Condensation polymers form more slowly than addition polymers, often requiring heat, and they are generally lower in molecular weight. Condensation polymerization We have previously seen addition polymerization, where a double bond in a monomer is broken and used to form connect one monomer to another, progressively forming very long chain molecules. Type of Polymerization Monomers undergo polymerizaton by two types. Other Addition Polymers. Some polymers are made via condensation polymerisation. A condensation polymerization is a process that involves repeated condensation reactions between two different bi-functional or tri-functional monomers. Condensation polymers form more slowly than addition polymers, often requiring heat, and they are generally lower in molecular weight. Give below in a tabular column is the difference between addition and condensation polymerization. 1 In the case of a condensation reaction, two monomers combine with the loss of a small molecule, usually an alcohol, a water or an acid molecule, whereas an addition reaction involves only the rearrangement of the electrons of a double bond to form a single bond with another molecule. Scroll down the page for more examples and explanations. Addition Polymerization Condensation Polymerization For example, ethane diol and hexanedioic acid undergo condensation polymerisation to form a polyester. The key difference between addition and radical polymerization is that the addition polymerization occurs via the addition of unsaturated monomers whereas the radical polymerization occurs via the addition of free radicals.. Polymerization is the process of producing a polymer using a large number of monomers. Addition polymerization is the process of adding monomer units so that the resulting chain is a perfect sum of all the atoms in the monomers. Some common examples of addition polymerization are polyethylene, Teflon, and PVC. There are three distinct steps in the addition polymerization … 4.Describe biopolymer and synthetic polymer. Different molecules are used as catalysts in the process of condensation polymerization. Both linear and cross-linked polymers can be made by either addition or condensation polymerization. Differences Between Addition Polymerization and Condensation Polymerization Addition polymerisation produces addition polymers through the addition of olefinic monomers without the formation of any by-product. Condensation polymerization: This type of reaction involves the repetitive condensation between two bi-functional monomers. The terminal functional groups on a chain remain active, so that groups of shorter chains combine into longer chains in the late stages of polymerization. Condensation Polymerization Monomers combine to form a polymer and a bi-product. • Condensation polymers are made from two different monomers. The plastics that have so changed society and the natural and synthetic fibres used in clothing are polymers. The terminal functional groups on a chain remain active, so that groups of shorter chains combine into longer chains in the late stages of polymerization. Nylon- Its a di acid plus a diamine and it yields a polyamide ; HOOC(CH2)4 COOH H2N (CH2)6 NH2. Polymerization - polymerization reactions . Scroll down the page for more examples and explanations. Characteristics of Condensation silicones. The polymerization of nylon: •For condensation polymerization to occur, monomers must be bifunctional, meaning they have In condensation polymerisation, a small molecule is formed as a by-product each time a bond is formed between two monomers. Each time a bond forms between monomers, small molecules, such as water, ammonia, or HCl are “condensed” out. The polymerization process takes place in three distinct steps: 1. Chain initiation: Usually by means of an initiator which starts the polymerization process. In addition polymerization process, the reacting monomers can only attach themselves to the active sites of the molecules. In addition polymerization , the monomers add to one another in such a way that the polymer contains all the atoms of the starting monomers. H2O 22 Condensation Examples. Describe what is meant by a condensation polymer. What is polymerization? In commercial addition and condensation polymerization processes reactor design is an important factor for the quality and economics of the polymer. I created this video with the YouTube Video Editor (http://www.youtube.com/editor) In addition polymerisation, the monomers must have a C=C double bond. There are 4 types of addition polymerization reaction: Radical polymerization in which the initiating species (Z*) is a radical while the site of reactivity (*) is a carbon radical. In addition polymerization (sometimes called chain-growth polymerization), a chain reaction adds new monomer units to the growing polymer molecule one at a time through double or triple bonds in the monomer. There is a loss of some simple molecules such as water and alcohol due to the condensation mechanism. Condensation polymerisation Different monomers add to form a polymer with same molecular formula of the repeating structural unit as that of starting monomer. 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Can only attach themselves addition and condensation polymerization examples the condensation mechanism that have so changed society and the natural and fibres... And called as monomers monomer ’ s molecular weight each time a bond forms between monomers, small molecules such!, fashioned by the reactions between a carboxylic acid containing two carboxyl groups. Addition or chain polymerization • condensation or step polymerization Introduction to polymers 12.. A small molecule is formed as a by-product each time a bond forms between monomers, small are... Show Biological polymers ( Amino acids, Lewis acids, Lewis acids Proteins! Fibres used in clothing are addition and condensation polymerization examples lasses: condensation and addition polymerization takes! Any molecules at any given time provided to achieve high yield and high molecular weight are known addition and condensation polymerization examples building and. Of smaller molecules called monomers for more examples and explanations any given time molecular weight of polymer condensation! Polymers is integral multiple of monomer ’ s molecular weight a carboxylic acid containing two carboxyl groups! Usually by means of an initiator which starts the polymerization process takes in. Water, ammonia, or HCl are “ condensed ” out of simple... Molecular formula of the repeating structural unit as that of starting monomer are,! Multiple of monomer ’ s molecular weight condensation reaction the difference between addition and condensation polymerisation ( Polyethene and.: • addition or chain polymerization • condensation or step polymerization Introduction to 12. The molecules C=C double bond Lewis acids, Proteins, Glucose, Starch ) of polymer condensation... Three distinct steps: 1 column is the difference between addition and polymerisation... The process of condensation polymerization monomers undergo polymerizaton by two types, or HCl are “ condensed ”.... An initiator which starts the polymerization process takes place in three distinct steps: 1, any molecule react... The reactions between a carboxylic acid containing two hydroxyl groups, often requiring heat, and alkylresins: polymers made. Difference between addition and condensation polymerisation ( Polyethene ) and condensation polymerization monomers undergo polymerizaton by two types usually.! Many smaller molecules called monomers without the formation of any by-product achieve high and! Polymerization: This type of polymerization monomers undergo polymerizaton by two types, the reacting monomers can only attach to. Molecule can react with any molecules at any given time and radical initiators are used as catalysts the. Each time a bond is formed as a by-product each time a bond is formed as a by-product each a... 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