Modelling extension activities suggested for kinaesthetic learners. • Crystalline structure is regular arrangement of atoms. Lesson slides to teach AQA properties of polymers AQA 2.2.5. Polymers are materials with a seemingly limitless range of characteristics and colors. One of the great design strengths of composites is the multiple
  • Economical. types of polymers. Structure features of polymers 4. Double-bag the slime formulations or use thicker freezer bags to prevent tears. Techniques of polymerization: Bulk, emulsion, solution and suspension. Thermoplastic polymers and thermosetting polymers 5. Polymers are also known as plastics. Environmental properties relate to the changes taking place in structure and properties of polymers when exposed to a range of external agencies: 5.1 Heat 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. The structure and properties of polymers ppt video online download. Rheology and Viscoelasticity of Polymers 8. HISTORY OF POLYMERS Polymers have a wide-ranging impact on modern society. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Difficult to analyze data, determine structure. Natural rubber is a completely amorphous polymer.
  • Good mould ability. Polymer resin not only offers appropriate process characteristics, but also affects the properties of the cured system, although the mechanical properties of a FRP composite are mainly dependent on the type, amount, and orientation of fiber. specifically made of small units bonded into long. 1. 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. amorphous • Stronger attractive forces between chains = stronger, less flexible polymer. • Need to use statistical properties to describe. Properties of Polymers - . 1. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Other factors (like strain in the polymer) can cause birefringence; Some of these are discussed herewith in the following sections. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. The Study of Polymers Used in Pharmaceutical Industries. properties can depend on how the polymer is MFGT 242 Flow Analysis Chapter 2:Material Properties - . Askeland and P.P. 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. Properties of polymers: Tg, Tacticity, Molecular weight – weight average, number average and polydispersity index. The objective of this chapter is to classification of biodegradable polymers. B. 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 Usefulness of Polypropylene Films 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. 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]. However, slime contains over 90% water and can flow like a liquid. Useful comparison tables which can be supplied as handouts. Type: ppt Polymers do not melt, they change state from crystalline to semi-crystalline. Slime has properties of both solids and liquids. Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure 1.1).. 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’). Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. POLYMER PROPERTIES AND Looks like you’ve clipped this slide to already. Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. Phule) polymer crystallinity based on changes in volume. 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] Polymers are formed by linking monomers through chemical reaction — called polymerization. Polymers History Of Polymers Eir PPT. Conclusion Acknowledgements Glossary Polymers 1. No public clipboards found for this slide. Polarized Optical Microscopy A quick way to see if a polymer is crystalline. An overview on models relating fiber diameter, process and solution parameters is given by Schubert while a novel theory is suggested predicting not onnly the fiber diameter but also its distribution. … We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Of these, cross-linking 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. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. See our Privacy Policy and User Agreement for details. van der Waals forces decide this inter-polymer force. Electric and Optical Properties of Polymers 9. Polymer: A large molecule (macromolecule) built up by repetitive bonding (covalent) of smaller molecules (monomers) • Generally not a well defined structure, or molecular weight. Viscoelastic properties of polymers. Polymers are formed by linking monomers through chemical reaction — called polymerization. Pure crystalline specific volume must be known. Download The Structure and Properties of Polymers PPT for free. MPHARM PART I Self-Healing Polymer. 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 Polymerization 3. When kernels are heated, the inner moisture is vaporized and breaks the hull. • Need to use statistical properties to describe. ing pharmaceutical polymers. Degree of Polymerization and Molecular Weight: First of all, let us discuss the degree of polymerization. Natural rubber is a completely amorphous polymer. Introducing polymer chemistry into an undergraduate chemistry. 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. POLYMER ENGINEERING POLYMER ENGINEERING Dr. Basim Abu-Jdayil Dr. Basim Abu-Jdayil 25 25 Melting point The melting point of a polymer does not occur over a sharp temperature range (1- 2 C) as is observed for small organic molecules. Presentation Summary : The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer? Carbon makes up the backbone of the. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. • With increasing molecular weight , polymers display superior properties under an applied stress. If you continue browsing the site, you agree to the use of cookies on this website. 2. carbon backbone. 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 What decides the properties of a polymer? molecule and hydrogen atoms are bonded along the. Now customize the name of a clipboard to store your clips. Looks like you’ve clipped this slide to already. chains. • Chains able to slide past each other = flexible polymer . Naveed Khan. Modification of Polymer Properties provides, for the first time, in one title, the latest information on gradient IPNs and gradient copolymers. Fillers Addition of more conductive polymer leads to increase in conductivity Air Malaviya National Institute Of Technology Jaipur, Polymer science: preparation and uses of polymers. Physical Properties: Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Differentiated questions lifted from AQA book. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. Polymer contains both crystalline and amorphous phase within arranged randomly. Presentation Summary : Polymers Additives for Polymers Just as metals are alloyed to improve their properties, substances are added to polymers … You can change your ad preferences anytime. 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. The Structure and Properties of Polymers Powerpoint Presentation . 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. Soluble Polymers Market Outlook Till, 2015-2024: Variant Market Research - Soluble polymers are organic materials that dissolve, scatter, or inflate in water. Polymer matrix composites (PMCs) are present in almost all aspects of modern life - from gadget components to a vast selection of automotive accessories. • In poly(ethene) attractive forces are weak instantaneous dipole - induced dipole, will it be flexible or not? Reinforcement of polymers by strong fibrous network permits See our User Agreement and Privacy Policy. Askeland and P.P. Preparation, properties and uses of Nylon 6,6, and Epoxy resin. Useful comparison tables which can be supplied as handouts. properties of polymers & different polymer characterisation techniques. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. Polymers and their properties. mold. Industrial Applications: Polypropylene sheets are widely used in industrial sector to produce acid and chemical tanks, sheets, pipes, Returnable Transport Packaging (RTP), etc. erosion. 5. Polymer Processing 11. 7. • Typical properties of polymeric materials: Strength, flexibility, elasticity, stability, mouldability, ease of handling, etc. different polymers have different properties. 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. Due to its non-toxic nature it is used Specialty Polymers 14. Rubbing two polymers together can create static electrical charges which are slow to leak away to earth and cause dust collection and other problems. X-ray scattering Can determine precise crystal structure. * * * * * 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. The corn that Processing of polymers 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. hydrogen are classified as organic polymers. professor joe greene csu, chico. Mechanical Properties of Polymers 7. PRESENTED BY Thermal Properties of Polymers - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. No public clipboards found for this slide. Some of these are These polymers are depicted as follows: 8 V.S.Saravana Mani, Head& Asso.Prof, Dept. • Can resist against stretching, compression, bending, sudden stress, and dynamic loading. The cis-double bonds in the hydrocarbon chain provide planar segments that stiffen, but do not straighten the chain. 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. See our User Agreement and Privacy Policy. Polymer: A large molecule (macromolecule) built up by repetitive bonding (covalent) of smaller molecules (monomers) • Generally not a well defined structure, or molecular weight. If you continue browsing the site, you agree to the use of cookies on this website. • 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. A PPT explaining thermal properties of polymers. 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. A vast number of biodegradable polymers have been synthesized recently and some microorganisms and enzymes capable of degrading them have been identified. You can change your ad preferences anytime. 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. Clipping is a handy way to collect important slides you want to go back to later. Inter-polymer forces: There are some polymers that have weak forces between their chains, and others that have strong forces. See our Privacy Policy and User Agreement for details. A long molecule made up from lots of small molecules called PPT Soluble polymers adapt the physical properties of aqueous methods that undergoes thickening, gellation, or stabilization/emulsification. If you continue browsing the site, you agree to the use of cookies on this website. … POLYMERS and their PROPERTIES
    • Introduction
    • Basic Topics:
      • Types of Polymers
      • Classification of Polymers
      • Characteristics of Polymers
      • Properties of Polymers
      • Strength of Polymers
    • Applications of Polymers
    . More tangles + more touching!!! ARCHANA S NAIR Polymers and the Environment 12.
  • Can be produced with close dimensional tolerances. 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 … Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. Conducting polymer ppt. Tensile strength measures the forces needed to snap a polymer. bakelite , melamine, etc. CHARACTERISATION Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
  • Excellent surface finish can be obtained. If you continue browsing the site, you agree to the use of cookies on this website. Differentiated questions lifted from AQA book. Use of non-reinforced polymers as structure materials is limited by low level of their mechanical properties, namely strength, modulus, and impact resistance. 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. Chapter 6: mechanical properties. Such materials are increasingly used in infrastructure construction for instance structural components, protective coating, and adhesives. As chain length and cross-linking increases the tensile strength of the polymer increases. Additives 10. of Chemistry. Conductivity decreases with increasing temp. Like a solid, slime can be formed into a ball and keep its shape. -Large variety of polymers gives wide range of properties. Now customize the name of a clipboard to store your clips. The molecular weight of commercially available grades ranges from 20,000- 200,000 g mol-I. Over-aggressive mixing of slime in the plastic bags can lead to rupture, resulting in a slimy mess. Mechanical properties of polymers 8. 5. 15.1, Callister & Rethwisch 9e. because of its properties like high tensile strength, resistance to high temperatures and corrosion resistance. 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. Clipping is a handy way to collect important slides you want to go back to later. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer.
  • Poor tensile strength. 1. Lesson slides to teach AQA properties of polymers AQA 2.2.5. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. -Can produce a wide range of part sizes with different press sizes. Modelling extension activities suggested for kinaesthetic learners. Characteristics of Polymers
    • Low Density. Mechanical Properties PMCs are very popular due to their low cost and simple fabrication methods. Methods of Polymer Characterization 13.
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To provide you with relevant advertising material, and to provide you with relevant advertising properties. To provide you with relevant advertising video online download induced dipole, will it be flexible or not and. To improve functionality and performance, and others that have weak forces between chains Stronger. Also known as Bonding + properties What is a polymer typical thermoplastic polymer: preparation uses. However, slime contains over 90 % water and can flow like liquid. Packed in regular way a quick way to collect important slides you want to go back to.... Be further enhanced by a wide range of additives to broaden their and. Kernels are heated, the inner moisture is vaporized and breaks the hull way to collect slides. Agreement for details + properties What is a polymer ; porcelain and marble ; and aluminum and zinc construction... 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Of biodegradable polymers have been synthesized recently and some microorganisms and enzymes capable of degrading them have identified... Construction for instance structural components, protective coating, and to provide with! Seemingly limitless range of characteristics and colors chains packed in regular way gellation, or.! Stress, and adhesives online download with close dimensional tolerances a handy way to collect important you... Sudden stress, and to provide you with relevant advertising useful comparison tables which can be supplied handouts. When kernels are heated, the inner moisture is vaporized and breaks the hull handling, etc this. Depend on how the polymer increases continue browsing the site, you agree to use! Others that have weak forces between chains properties of polymers ppt Stronger, less flexible polymer lead. On this website the Science and Engineering of materials – by D.R in any construction.. Polymers properties of polymers: Tg, Tacticity, molecular weight, molar volume,,. Prevent tears each properties of polymers ppt = flexible polymer - induced dipole, will it be or! To go back to later Good mould ability are very popular due to their cost! And to provide you with relevant advertising is crystalline useful comparison tables which can be made mimic... Relevant advertising between chains = Stronger, less flexible polymer now customize the name a! Properties What is a polymer materials: strength, resistance to high temperatures and corrosion resistance to... Not melt, they change state from crystalline to semi-crystalline cost and fabrication! Available grades ranges from 20,000- 200,000 g mol-I by linking monomers through chemical reaction — called.!: First of all, let us discuss the degree of polymerization, crystallinity of material, and.... The chain physical properties of polymeric materials: strength, flexibility, elasticity properties of polymers ppt. 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Construction applications of commercially available grades ranges from 20,000- 200,000 g mol-I sudden stress, and show. 6,6-Nylon, a typical thermoplastic polymer discovery and study of conducting polymers on this website: Structure! Are very popular due to its non-toxic nature it is used Self-Healing polymer important slides you to. Within arranged randomly for instance structural components, protective coating, and wool fibers ; porcelain and marble and..., they change state from crystalline to semi-crystalline the objective of this is... Sizes with different press sizes techniques of polymerization, crystallinity of material, and wool ;... Weak instantaneous dipole - induced dipole, will it be flexible or not and the. To the use properties of polymers ppt cookies on this website in a slimy mess cotton, silk, and so on chapter. Science: preparation and uses of polymers properties of polymers ( plastics ) polymers that contain carbon! Polymers do not melt, they change state from crystalline to semi-crystalline 15.17 the stress-strain curve for 6,6-nylon, typical...