Lesson 5: Structure and Applications of Metals; Lesson 6: Types and Applications of Metal Alloys; Lesson 7: Structure and Applications of Ceramics; Lesson 8: Structure and Applications of Polymers. Conducting polymers are useful in discharging large quantities of static electricity in computer industries and in chemical industries. Natural polymers include such materials as silk, shellac, bitumen, rubber, and cellulose. The identity of the monomer residues (repeat units) comprising a polymer is its first and most important attribute. Chemistry But nowadays it has become a serious problem due to its problem of degradation which is a process which is a time consuming process. We take a look here at some of the key areas in which high-performance polymers find application. A very useful but common commodity of our life. NYLON 6:- its monomer is caprolactum made up of cyclohexane. 6. Polypropylene: The reaction to make polypropylene (H 2 C=CHCH 3) is illustrated in the middle … For coating articles and cookware to make them non-sticky as non stick utensils. Tensile strength increases with polymer chain length and crosslinking of polymer chains. These are the polymers which can be easily softened repeatedly when heated and hardened when cooled with little change in their properties. Polymers are substances containing a large number of structural units joined by the same type of linkage. Free resources to assist you with your university studies! TERYLINE:-It is a polymer of ethylene glycol and terephthalic acid. These are the polymers which undergo permanent change on heating and can not be remoulded into our desired shape. If you continue browsing the site, you agree to the use of cookies on this website. Higher tensile strength holds a greater weight before snapping. The polymer so formed is called a polyacrylate whose swelling capacity and gel modulus depends greatly on the quantity and type of cross-linker used. As a good insulating material in wires and other electrical goods. Biodegradable polymers are generally used for this purpose. It provides extraordinary levels of resistance to chemicals, heat and oil, while providing useful service life above 200°C. Looking for a flexible role? Fibers include many types of synthetic yarn or rope that are made from amorphous materials such as the polyesters. The free radical generates the crosslinking of the polymer which results in a resin that is specifically designed for critical applications like chemical storage pipework systems, hydronic radiant heating and cooling systems, and insulation for high voltage electrical cables. It has very high elasticity, resistance to oxidation and organic solvents. They can also be used to anchor a bone plate or keep a suture in place. These include shape-memory polymers, light-responsive polymers and self-heaing polymers. Polymer testing and consultancy for plastics, additives with applications including aerospace, automotive, electronics, packaging and medical devices. Registered Data Controller No: Z1821391. Polymer analysis and analysis of plastics can be carried out by using NMR in different states and under a large variety of conditions. Highly crystalline polymers are rigid, high melting, and less affected by solvent penetration. In basic terms, a polymer is a long-chain molecule that is composed of a large number of repeating units of identical structure. The reaction is shown in the graphic on the left. However, the majority of polymers or plastics used for engineering design are synthetic and often they are specifically formulated or “designed” by chemists or chemical engineers to serve a specific purpose. The boiling point of a polymeric material is strongly dependent on chain length. It becomes sticky and soft when heated. It involves a addition reaction in which one double bond in isoprene open to form a new bond with next unit forming a large chain. Applications of Polymers Macromolecular science has had a major impact on the way we live. Conducting Polymers and t heir Applications Current Physical Chemistry, 2012, Vol. It has become a necessity in our daily routines we shall talk now about the basic applications of polymers without which life wasn’t that easy. A chemical reaction of sulfur (or other vulcanizing agent) with rubber or plastic to cause cross-linking of the polymer chains; it increases strength and resiliency of the polymer chemically; the process involves the formation of cross-linkages between the polymer chains of the rubber’s molecules. Polymers are disassembled to monomers by hydrolysis, a process that is essentially the reverse of the dehydration reaction. USES:-it is used for making oil seals, manufacture of hoses and tank linkings. Polymers in biomedical applications are: non-toxic, biodegradable, biocompatible and meet the required specification for which they are intended because it has direct contact with the human body. Polymers (or macromolecules) are very large molecules made up of smaller units called monomers or repeating units, covalently bonded together. Hence conducting polymers are used as antistatics. 2, No. Applications of conducting polymers: 1. This polymer may be more expensive than others however its resistance to chemicals results in a more durable and long-wearing product. Application of PPC in blood contacted sensor Poly (2-methacryloyloxyethyl phosphorylcholine) (PMPC) is another important zwitterionic polymer which can be applied for sensor modification. When amide monomers are connected together by peptide bonds to form polymers, it is known as a polyamide. Conducting polymers are useful in discharging large quantities of static electricity in computer industries and in chemical industries. Polymers are also used in the formulation of controlled release drugs, manufacturing of contact and intraocular lenses, etc. of Chemistry. To export a reference to this article please select a referencing stye below: If you are the original writer of this essay and no longer wish to have your work published on UKEssays.com then please: Our academic writing and marking services can help you! ... Plastics are used in a growing range of applications in the construction industry. These are called polyhalo-olefins because they are derived from halogen substituted olefins. Not only are polymers food-safe and non-contaminating, they also allow for a significant reduction in noise and weight – both of which are paramount, especially when dealing with home level food processing equipment. It is not hard and tough. It can be easily deformed but regains its original shape after the stress is released. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Bottles, toys, containers, trays, disposable glasses and plates, tv cabinets and lids are some of the daily-used products made up of polystyrene. http://www.csua.berkely.edu/~ranga/school/me223/nylon.gif, http://www.openlearn.open.ac.uk/course/view.php?id=2937, http://www.britanica.com/EBchecked/topic/468696/polymer, http://www.polymertalk.com/history_of_polymers.php, http://en.wikipedia.org/wiki/branching_%28chemistry%29, http://www.polymertalk.com/classification_of_polymers.php, http://docs.google.com/viewer?a=v&q=cache:Wbn5XOJDt:www.cmse.ed.ac.uk/MSE3/Topics/MSE3-polymers.pdf+intoduction+of+polymers&hl=en&gl=in&sig=AHIEtbQ22RNSIoIyoXUP9HtDd-nakz-w, http://www.cem.msu.edu/~reusch/VirtualText/polymers.htm. In particular, the use of polymers, which can be easily tailored as desired, as electrolytes in batteries, and in organic and perovskite solar cells as active or charge transport layers, has … Polymers. The term melting point when applied to polymers, suggests not a solid-liquid phase transition but a transition from a crystalline or semi-crystalline phase to a solid amorphous phase. USES: – it is used for making automobile tyres and footwears. Polymers are useful for a variety of medical applications, from repairing blood vessels to replacing heart valves. High performance polymers like PEEK are particularly notable, as their excellent physical properties ensure they can fit into many applications. Starch, cellulose, and rubber all possess polymeric properties. Polymers are composed of very high molecular masses formed by the combination of large number of simple molecules. Company Registration No: 4964706. Many of the polymers that we are familiar with from our everyday lives are known as plastics. Recent years polymers have become the most used and investigated materials for applications in medicine. PDEAAm has a low value of LCST (a critical temperature below which the components of a solution with any composition are miscible) in the range of 25–32°C, which is near to normal body temperature. The University of Alabama REU in Interdisciplinary Application of Advanced Polymers for Engineering Innovation is housed in the Department of Chemical and Biological Engineering. Just 50 years ago, materials we now take for granted were non-existent. Among many temperature-sensitive polymers, poly(N-isopropylacrylamide) (PNIPAAm) and poly(N,N-diethylacrylamide) (PDEAAm) find many applications. V.S.Saravana Mani, Head& Asso.Prof, Dept. It is used in the manufacture of tyre ,cords, fabrics, and ropes. Fluoro polymer is a class of synthetic rubbers designed for high temperature application. Available research projects implement both computational and experimental analysis tools. Low cost, controlled crystallinity, chemical, and mechanical stability enable application of polymers in energy, water, electronics, and biomedical industries. Molecular science has a major role in our lives. PEEK valves for Coffee Machines On heating their cross links get highly linked with each other and becomes hard and infusible. Fibers represent a very important application of polymeric materials, including many examples from the categories of plastics and elastomers.It involves ester linkages. The sulphur bridge in this figure prevents the slip of the chains and rubber can be stretched to a limited extent and when tension is removed the chains try to coil up regain its original shape. It is used as a material resistant to heat and chemical attack in household works. 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