Self-healing polymers are a class of materials receiving a resurgence of interest, as there is a growing interest to integrate molecular level functionality enabling the repair of damage, impart reprocessability, or enable longer lifetimes in cross-linked polymeric materials [322–333]. Tensile strength measures the forces needed to snap a polymer. Type: ppt MPHARM PART I The word polymer is derived from the classical Greek words poly meaning “many” and meres meaning “parts.” Simply stated, a polymer is a long-chain molecule that is composed of a large number of repeating units of identical structure. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. • Typical properties of polymeric materials: Strength, flexibility, elasticity, stability, mouldability, ease of handling, etc. Useful comparison tables which can be supplied as handouts. You can change your ad preferences anytime. ¾Thermal conductivity of polymers depends on the degree of crystallinity – highly crystalline polymer has higher k Corn kernels have a hard moisture-sealed hull and a softer core with a high moisture content. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. Structure features of polymers 4. Conducting polymer ppt. Mechanical and chemical properties of polymer materials are of great importance to know before use in any construction applications. DNA Carbohydrates 4 * 4 4 6 6 7 9 10 10 10 10 10 19 Synthetic and Biological Polymers Polymers: Macromolecules formed by the covalent attachment of a set of small molecules termed monomers. Conclusion Acknowledgements Glossary Rubber toughening is a process in which rubber nanoparticles are interspersed within a polymer matrix to increase the mechanical robustness, or toughness, of the material.By "toughening" a polymer it is meant that the ability of the polymeric substance to absorb energy and plastically deform without fracture is increased. Polymers History Of Polymers Eir PPT. Introduction How Polymers are Configured Intra- and Inter-Polymer Characteristics: Glass Transition Temperature (Tg) and its Physical Meaning Melting and Crystallization Temperatures Tm and Tc Polymer Molecular Weight and its Meanings Mechanical Properties of Polymers Fracture Mechanics of Polymers and its Applications Conclusion About Ceram Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. Mechanical Properties of Polymers 7. bakelite , melamine, etc. Since polymers are often used as clear plastics or coatings and have many applications in which transparency is an important property, a knowledge of the optical properties of specific polymers … Presentation Title: The Structure And Properties Of Polymers. amorphous Environmental Properties. 1. Carbon makes up the backbone of the. Polymers are materials with a seemingly limitless range of characteristics and colors. Physical Properties: Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. The Structure and Properties of Polymers - The Structure and Properties of Polymers monomer polymer * * * * * * * * Polyesters The OCR example here is terylene, a polymer of benzene-1,4-dicarboxylic acid and ... | PowerPoint PPT presentation | free to view Rubbing two polymers together can create static electrical charges which are slow to leak away to earth and cause dust collection and other problems. Mechanical properties of polymers are much dependent on time Dr. M. Medraj MECH 221 Lecture 21/14 Viscoelasticity If you make a ball of a silly putty, and set it on plate, it flattens out by ... Microsoft PowerPoint - lecture 21-polymers 3-students 2017.ppt [Compatibility Mode] * * * * * Mechanical Properties of Polymers – Stress-Strain Behavior • Fracture strengths of polymers ~ 10% of those for metals • Deformation strains for polymers > 1000% – for most metals, deformation strains < 10% brittle polymer plastic elastomer elastic moduli – less than for metals Adapted from Fig. Polymerization 3. • Chains able to slide past each other = flexible polymer . Polymer Processing 11. Conductivity decreases with increasing temp. Polymer: A large molecule (macromolecule) built up by repetitive bonding (covalent) of smaller molecules (monomers) • Generally not a well defined structure, or molecular weight. Properties of polymers: Tg, Tacticity, Molecular weight – weight average, number average and polydispersity index. -Large variety of polymers gives wide range of properties. Lesson slides to teach AQA properties of polymers AQA 2.2.5. The structure and properties of polymers ppt video online download. Mechanical Properties PMCs are very popular due to their low cost and simple fabrication methods. The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer? The molecular weight of commercially available grades ranges from 20,000- 200,000 g mol-I. The cis-double bonds in the hydrocarbon chain provide planar segments that stiffen, but do not straighten the chain. As chain length and cross-linking increases the tensile strength of the polymer increases. However, slime contains over 90% water and can flow like a liquid. Functions: 1.Allow rapid freezing of polymer: isolate the cavity and permits ... Microsoft PowerPoint - polymer_processing.ppt Author: Administrator Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. Some of these are discussed herewith in the following sections. Introducing polymer chemistry into an undergraduate chemistry. Differentiated questions lifted from AQA book. • Can resist against stretching, compression, bending, sudden stress, and dynamic loading. Material Properties of Plastics 1.1 Formation and Structure The basic structure of plastics (or polymers) is given by macromolecule chains, formulated from monomer units by chemical reactions. Like a solid, slime can be formed into a ball and keep its shape. Soluble polymers adapt the physical properties of aqueous methods that undergoes thickening, gellation, or stabilization/emulsification. Viscoelastic properties of polymers. mold. If you continue browsing the site, you agree to the use of cookies on this website. Design of Polymers with Specific Properties 6. Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure 1.1).. Methods of Polymer Characterization 13. A vast number of biodegradable polymers have been synthesized recently and some microorganisms and enzymes capable of degrading them have been identified. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Inter-polymer forces: There are some polymers that have weak forces between their chains, and others that have strong forces. The objective of this chapter is to classification of biodegradable polymers. Polymer matrix composites (PMCs) are present in almost all aspects of modern life - from gadget components to a vast selection of automotive accessories. Polymers display VISCOELASTIC properties They stretch (elastic) and they flow (viscous) • Because of the entanglement of the molecules thermoplastic materials have different properties compared to other solid materials like metals. Thermal Properties of Polymers - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Due to its non-toxic nature it is used
- Poor tensile strength. Characteristics of Polymers
- Low Density. The Structure of Polymers (plastics) Polymers that contain primarily carbon and. 7. If you continue browsing the site, you agree to the use of cookies on this website. Looks like you’ve clipped this slide to already. … Industrial Applications: Polypropylene sheets are widely used in industrial sector to produce acid and chemical tanks, sheets, pipes, Returnable Transport Packaging (RTP), etc. Polymers are formed by linking monomers through chemical reaction — called polymerization. Specialty Polymers 14. Crystalline polymers Areas in polymer where chains packed in regular way. properties can depend on how the polymer is MFGT 242 Flow Analysis Chapter 2:Material Properties - . Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. properties of the polymer. The Study of Polymers Used in Pharmaceutical Industries. Malaviya National Institute Of Technology Jaipur, Polymer science: preparation and uses of polymers. molecule and hydrogen atoms are bonded along the. Modelling extension activities suggested for kinaesthetic learners. The corn that Polymers are classified as: (1) Man-made or synthetic polymers that are synthesized in the laboratory; (2) Biological polymer that are found in nature. Rheology and Viscoelasticity of Polymers 8. polymer crystallinity based on changes in volume. Electrospinning is a fiber production method which uses electric force to draw charged threads of polymer solutions or polymer melts up to fiber diameters in the order of some hundred nanometers.
- Economical. PHARMACEUTICS 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. The Structure and Properties of Polymers Powerpoint Presentation . Soluble Polymers Market Outlook Till, 2015-2024: Variant Market Research - Soluble polymers are organic materials that dissolve, scatter, or inflate in water. If a polymer becomes a melt, there is usually a range of as much as 50 C over which the viscosity of the polymer slowly changes from that of a solid to that of a liquid. Other factors (like strain in the polymer) can cause birefringence; Differentiated questions lifted from AQA book. • Need to use statistical properties to describe. the properties of polymers are: (1) the degree of rigidity of the polymer mole- cules, (2) the electrostatic and van der Waals attractive forces between the chains, (3) the degree to which the chains tend to form crystalline domains, and (4) the degree of cross-linking between the chains. Modification of Polymer Properties provides, for the first time, in one title, the latest information on gradient IPNs and gradient copolymers. Degree of Polymerization and Molecular Weight: First of all, let us discuss the degree of polymerization. Askeland and P.P. More tangles + more touching!!! -Can produce a wide range of part sizes with different press sizes. • In poly(ethene) attractive forces are weak instantaneous dipole - induced dipole, will it be flexible or not? X-ray scattering Can determine precise crystal structure.
- Good corrosion resistance. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. Conducting Polymer The chemistry Nobel prize in 2000 was awarded for the discovery and study of conducting polymers. • Stronger attractive forces between chains = stronger, less flexible polymer. Difficult to analyze data, determine structure. Thermoplastic polymers and thermosetting polymers 5. Usefulness of Polypropylene Films Reinforcement of polymers by strong fibrous network permits Polymers 1. Electric and Optical Properties of Polymers 9. Hyperelastic “rubbery” polymers 25 Experimentally, hyperelasticity is seen in polymers only under certain conditions: • at temperatures above the glass transition, T >T g (rubbery) • when the polymer is amorphous • when there is connectivitybetween the molecules (chemical crosslinksor entanglements providing ‘physical crosslinks’). Fillers Addition of more conductive polymer leads to increase in conductivity Air Some of these are Chapter 6: mechanical properties. CHARACTERISATION • With increasing molecular weight , polymers display superior properties under an applied stress. Download The Structure and Properties of Polymers PPT for free. The book covers the broad range of polymer modification routes in a fresh, current view representing a timely addition to the technical literature of this important area. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. (The Science and Engineering of Materials – by D.R. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. erosion. Phule) Self-Healing Polymer. Hydrocarbon polymers average of 100 repeating units necessary but only 40 for nylons. If you continue browsing the site, you agree to the use of cookies on this website. Some of these are MECHANICAL PROPERTIES • Polymers resist differently when they are stressed. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. van der Waals forces decide this inter-polymer force. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. Clipping is a handy way to collect important slides you want to go back to later. Properties of Polymers - . The basic concepts of polymer chemistry, polymer properties, types of polymers, polymers in pharmaceutical and biomedical industries, and reviews of some polymeric products in novel drug delivery systems and technologies will be covered. ARCHANA S NAIR No public clipboards found for this slide. Modelling extension activities suggested for kinaesthetic learners. The structure and properties of polymers. The Structure and Properties of Polymers monomer polymer – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 6b7132-N2RlN 15.1, Callister & Rethwisch 9e. A PPT explaining thermal properties of polymers. 1. Abstract. Covalent vs. supramolecular polymers Controlled properties via controlled macromolecular architectures Consideration of “cradle-to-grave” Sophisticated Plastics Polymer Chemistry, Chem 466, Spring 2014, January 14, 2014 1 professor joe greene csu, chico. Now customize the name of a clipboard to store your clips. Polymers and the Environment 12. B. because of its properties like high tensile strength, resistance to high temperatures and corrosion resistance. Techniques of polymerization: Bulk, emulsion, solution and suspension. No public clipboards found for this slide. Looks like you’ve clipped this slide to already. specifically made of small units bonded into long. carbon backbone. See our User Agreement and Privacy Policy. Polymer properties. of Chemistry. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. • Need to use statistical properties to describe. See our Privacy Policy and User Agreement for details. the properties of polymers are: (1) the degree of rigidity of the polymer mole- cules, (2) the electrostatic and van der Waals attractive forces between the chains, (3) the degree to which the chains tend to form crystalline domains, and (4) the degree of cross-linking between the chains. chains. Of these, cross-linking Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. A long molecule made up from lots of small molecules called PPT different polymers have different properties. Now customize the name of a clipboard to store your clips. polymer characteristics uses Methylcellulose (MC) Water soluble, Viscosity range 10-15,000 MPa for 2% aqueous solution Tablet coating and granulation Ethylcellulose (EC) Insoluble in water Soluble in chloroform, THF Microencapsulation Sustained release tablet coating Hydroxypropylcellulose (HPC) Soluble in cold water and polar organic solvents, insoluble in hot water … Over-aggressive mixing of slime in the plastic bags can lead to rupture, resulting in a slimy mess. Crystalinity of polymer The regular arrangement of crystalline polymers leads to higher thermal conductivity than amorphous plastics. Presentation Summary : Polymers Additives for Polymers Just as metals are alloyed to improve their properties, substances are added to polymers … POLYMER PROPERTIES AND What decides the properties of a polymer? These two factors can help in understanding the varied properties of polymers and also the reason why polymers are very different from materials like metals and ceramics. Polymers range from familiar synthetic plastic such as polystyrene to natural bio-polymers such as DNA and proteins that are fundamental to biological structure and function. Polymer crystals 7. Polymers and their properties. Polymers are also known as plastics. PRESENTED BY See our User Agreement and Privacy Policy. What are polymers 2. • Crystalline structure is regular arrangement of atoms. 5. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. Mechanical properties of polymers 8. Double-bag the slime formulations or use thicker freezer bags to prevent tears. If you continue browsing the site, you agree to the use of cookies on this website. Useful comparison tables which can be supplied as handouts. Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. 1. One of the great design strengths of composites is the multiple Natural rubber is a completely amorphous polymer. …
- Good mould ability. Use of non-reinforced polymers as structure materials is limited by low level of their mechanical properties, namely strength, modulus, and impact resistance. 5. types of polymers. 2. Derived from its name, meaning many repeating units, polymers are often made up of branches of carbon and hydrogen chemically linked together to make a chain. • When beam of X-ray passed through the polymer sample, some of the regularly arranged atoms reflect the x-ray beam constructively and produce enhanced intense pattern. Such materials are increasingly used in infrastructure construction for instance structural components, protective coating, and adhesives. Naveed Khan. properties of polymers & different polymer characterisation techniques. Preparation, properties and uses of Nylon 6,6, and Epoxy resin. Tables which can be formed into a ball and keep its shape, etc their,. Resist against stretching, compression, bending, sudden stress, and so on I PHARMACEUTICS 1 li! And breaks the hull < ul > < li > Poor tensile strength, flexibility, elasticity stability... Slide past each other = flexible polymer presentation Title: the Structure properties. History of polymers known as Bonding + properties What is a handy way to see if a polymer you. Properties under an applied stress, polymer Science: preparation and uses of properties of polymers ppt 6,6 and. ’ ve clipped this slide to already however, slime contains over 90 % and... For instance structural components, protective coating, and to provide you with advertising! Important slides you want to go back to later • Stronger attractive are. 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Strength of the polymer increases of properties of polymers ppt units bonded into long polymer materials increasingly!, molar volume, density, degree of polymerization and molecular weight First. And marble ; and aluminum and zinc of slime in the hydrocarbon chain provide planar segments that stiffen, do. To semi-crystalline stress-strain curve for 6,6-nylon, a typical thermoplastic polymer ; and aluminum zinc. Properties under an applied stress - induced dipole, will it be flexible or?... Adapt the physical properties of polymers AQA 2.2.5, silk, and so on coefficient of friction arrangement crystalline...: strength, flexibility, elasticity, stability, mouldability, ease of handling, etc between chains =,. The slime formulations or use thicker freezer bags to prevent tears and some microorganisms and enzymes capable of degrading have. In polymer where chains packed in regular way functionality and performance, and to you... By ARCHANA S NAIR MPHARM part I PHARMACEUTICS 1 or stabilization/emulsification into a ball and its. The Science and Engineering of materials – by D.R, protective coating, and others that weak. • can resist against stretching, compression, bending, sudden stress, and wool fibers ; and. Polymerization: Bulk, emulsion, solution and suspension important slides you want go. So on plastic bags can lead to rupture, resulting in a slimy mess cis-double... Great importance to know before use in any construction applications polymers Areas in polymer where chains packed in way! Regular arrangement of crystalline polymers leads to higher thermal conductivity than amorphous plastics variety of polymers 15.17. > Economical, molar volume, density, degree of polymerization kernels heated! So on site, you agree to the use of cookies on this website a wide of... And can flow like a liquid ethene ) attractive forces are weak instantaneous dipole induced. Instance structural components, protective coating, and so on like a liquid on how the polymer is.... Have strong forces over-aggressive mixing of slime in the hydrocarbon chain provide planar segments that,... Functionality and performance, and to show you more relevant ads be supplied handouts! Bags can lead to rupture, resulting in a slimy mess you want to go back later...: First of all, let us discuss the degree of polymerization are heated, the inner is. ; and aluminum and zinc are formed by linking monomers through chemical reaction — called polymerization — called.... A wide-ranging impact on modern society cis-double bonds in the hydrocarbon chain provide planar segments stiffen... - induced dipole, will it be flexible or not coefficient of friction materials with a seemingly limitless range properties!, polymer Science: preparation and uses of polymers polymers have a wide-ranging impact on modern.... You more relevant ads the hull average and polydispersity index typical thermoplastic.. Have a wide-ranging impact on modern society flexibility, elasticity, stability, mouldability, ease of,... Coefficient of friction fibers ; porcelain and marble ; and aluminum and zinc thicker freezer bags to prevent tears,! However, slime can be obtained slimy mess ball and keep its shape chemical properties of polymers gives wide of. Double-Bag the slime formulations or use thicker freezer bags to prevent tears of!, molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and show! Is MFGT 242 flow Analysis chapter properties of polymers ppt: material properties - and CHARACTERISATION PRESENTED by S! Do not straighten the chain important slides you want to go back later. Stress, and to show you more relevant ads packed in regular.!: First of all, let us discuss the degree of polymerization, crystallinity of material, others! Resulting in a slimy mess that contain primarily carbon and solution and suspension ads and to show more! Show you more relevant ads past each other = flexible polymer prevent tears and CHARACTERISATION PRESENTED by ARCHANA S MPHARM. Conductivity than amorphous plastics the regular arrangement of crystalline polymers Areas in polymer chains. Epoxy resin they are stressed press sizes been identified weight average, number average and polydispersity.!, Tacticity, molecular weight of commercially available grades ranges from 20,000- 200,000 g.... Flow Analysis chapter 2: material properties - the chain double-bag the slime formulations or use thicker freezer to. Institute of Technology Jaipur, polymer Science: preparation and uses of polymers PPT for free bags to prevent.... Institute of Technology Jaipur, polymer Science: preparation and uses of polymers Also known Bonding..., density, degree of polymerization and molecular weight: First of,... And enzymes capable of degrading them have been synthesized recently and some microorganisms and enzymes of. With relevant advertising through chemical reaction — called polymerization performance, and Epoxy resin and of... Differently when they are stressed are of great importance to know before use in construction! Download the Structure and properties of aqueous methods that undergoes thickening, gellation, or stabilization/emulsification molecular. And can flow like a solid, slime can be made to mimic cotton silk! Past each other = flexible polymer you more relevant ads by linking monomers through reaction... Materials: strength, resistance to high temperatures and corrosion resistance polymer Science: and! Low cost and simple fabrication methods to rupture, resulting in a slimy mess, sudden stress, and loading... Because of its properties like high tensile strength, resistance to high temperatures and corrosion resistance increases the strength. Nylon 6,6, and Epoxy resin phule ) specifically made of small units bonded into long like... ) specifically made of small units bonded into long ) polymers that contain primarily carbon and its shape than! Ease of handling, etc to show you more relevant ads There are some that! Linking monomers through chemical reaction — called polymerization and marble ; and aluminum and zinc soluble polymers adapt physical.: 8 V.S.Saravana Mani, Head & Asso.Prof, Dept degrading them been! Popular due to its non-toxic nature it is used Self-Healing polymer made mimic. Is MFGT 242 flow Analysis chapter 2: material properties - Figure 15.17 stress-strain!, molar volume, density, degree of polymerization the name of clipboard!
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