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. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Preparation, properties and uses of Nylon 6,6, and Epoxy resin. Askeland and P.P. 1. Lesson slides to teach AQA properties of polymers AQA 2.2.5. Polymers are formed by linking monomers through chemical reaction — called polymerization. Mechanical Properties PMCs are very popular due to their low cost and simple fabrication methods. Both amorphous and crystalline areas in same polymer. • Can resist against stretching, compression, bending, sudden stress, and dynamic loading. Physical Properties: Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. 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’). A vast number of biodegradable polymers have been synthesized recently and some microorganisms and enzymes capable of degrading them have been identified. Specialty Polymers 14. 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. Properties of Polymers - . properties of polymers & different polymer characterisation techniques. 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]. Conducting Polymer The chemistry Nobel prize in 2000 was awarded for the discovery and study of conducting polymers. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. molecule and hydrogen atoms are bonded along the. Looks like you’ve clipped this slide to already. Differentiated questions lifted from AQA book. 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. 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. 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. Electric and Optical Properties of Polymers 9. 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. Useful comparison tables which can be supplied as handouts. You can change your ad preferences anytime. The Study of Polymers Used in Pharmaceutical Industries. 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. Useful comparison tables which can be supplied as handouts. types of polymers.
  • Good mould ability. 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. Lesson slides to teach AQA properties of polymers AQA 2.2.5. Askeland and P.P. Polymers are also known as plastics. 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. The chemical structure, sources, production and synthesis methods, physical properties (mechanical, barrier Polymers are formed by linking monomers through chemical reaction — called polymerization. What are polymers 2. Hydrocarbon polymers average of 100 repeating units necessary but only 40 for nylons. Thermal Properties of Polymers - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The Structure of Polymers (plastics) Polymers that contain primarily carbon and. 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. Polymer crystals 7. 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 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. The cis-double bonds in the hydrocarbon chain provide planar segments that stiffen, but do not straighten the chain. Type: ppt properties can depend on how the polymer is MFGT 242 Flow Analysis Chapter 2:Material Properties - . van der Waals forces decide this inter-polymer force. … These polymers are depicted as follows: 8 V.S.Saravana Mani, Head& Asso.Prof, Dept. Presentation Summary : The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer? bakelite , melamine, etc. • Chains able to slide past each other = flexible polymer . 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 and their properties. If you continue browsing the site, you agree to the use of cookies on this website. Polymers are classified as: (1) Man-made or synthetic polymers that are synthesized in the laboratory; (2) Biological polymer that are found in nature. The objective of this chapter is to classification of biodegradable polymers. Clipping is a handy way to collect important slides you want to go back to later. The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer?
  • Good corrosion resistance. POLYMER PROPERTIES AND Looks like you’ve clipped this slide to already. • Need to use statistical properties to describe. CHARACTERISATION Slime has properties of both solids and liquids. Difficult to analyze data, determine structure. The molecular weight of commercially available grades ranges from 20,000- 200,000 g mol-I. • Typical properties of polymeric materials: Strength, flexibility, elasticity, stability, mouldability, ease of handling, etc.
  • Excellent surface finish can be obtained. Conductivity decreases with increasing temp. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications.
  • Can be produced with close dimensional tolerances. The structure and properties of polymers ppt video online download. Modelling extension activities suggested for kinaesthetic learners. 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. No public clipboards found for this slide. Polymer: A large molecule (macromolecule) built up by repetitive bonding (covalent) of smaller molecules (monomers) • Generally not a well defined structure, or molecular weight. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Some of these are • 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. 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 properties of the polymer. Additives 10. The Structure and Properties of Polymers Powerpoint Presentation . Techniques of polymerization: Bulk, emulsion, solution and suspension. Rubbing two polymers together can create static electrical charges which are slow to leak away to earth and cause dust collection and other problems. The structure and properties of polymers. Crystalline polymers Areas in polymer where chains packed in regular way. Modification of Polymer Properties provides, for the first time, in one title, the latest information on gradient IPNs and gradient copolymers. Additives 6. carbon backbone. Methods of Polymer Characterization 13. 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 professor joe greene csu, chico. Malaviya National Institute Of Technology Jaipur, Polymer science: preparation and uses of polymers. As chain length and cross-linking increases the tensile strength of the polymer increases. • In poly(ethene) attractive forces are weak instantaneous dipole - induced dipole, will it be flexible or not? Polymers 1. 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. See our User Agreement and Privacy Policy. Reinforcement of polymers by strong fibrous network permits Polymer properties. Processing of polymers Abstract. • With increasing molecular weight , polymers display superior properties under an applied stress. ARCHANA S NAIR We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Introducing polymer chemistry into an undergraduate chemistry. 15.1, Callister & Rethwisch 9e. Of these, cross-linking See our Privacy Policy and User Agreement for details. 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. Phule) Functions: 1.Allow rapid freezing of polymer: isolate the cavity and permits ... Microsoft PowerPoint - polymer_processing.ppt Author: Administrator Use of non-reinforced polymers as structure materials is limited by low level of their mechanical properties, namely strength, modulus, and impact resistance. Some of these are discussed herewith in the following sections. Thermoplastic polymers and thermosetting polymers 5. Environmental Properties. B. Phule) * * * * * 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. Such materials are increasingly used in infrastructure construction for instance structural components, protective coating, and adhesives. polymer crystallinity based on changes in volume. Polymers History Of Polymers Eir PPT. Presentation Summary : Polymers Additives for Polymers Just as metals are alloyed to improve their properties, substances are added to polymers … See our Privacy Policy and User Agreement for details. because of its properties like high tensile strength, resistance to high temperatures and corrosion resistance. The corn that
  • Economical. 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. Presentation Title: The Structure And Properties Of Polymers. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Polymer: A large molecule (macromolecule) built up by repetitive bonding (covalent) of smaller molecules (monomers) • Generally not a well defined structure, or molecular weight. Polymer matrix composites (PMCs) are present in almost all aspects of modern life - from gadget components to a vast selection of automotive accessories. Properties of polymers: Tg, Tacticity, Molecular weight – weight average, number average and polydispersity index. Polymers are materials with a seemingly limitless range of characteristics and colors. 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. ing pharmaceutical polymers. Chapter 6: mechanical properties. Mechanical properties of polymers 8. Polymers and the Environment 12. A long molecule made up from lots of small molecules called PPT 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. You can change your ad preferences anytime. (The Science and Engineering of Materials – by D.R. 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 No public clipboards found for this slide. Modelling extension activities suggested for kinaesthetic learners. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. chains. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. MECHANICAL PROPERTIES • Polymers resist differently when they are stressed. hydrogen are classified as organic polymers. Inter-polymer forces: There are some polymers that have weak forces between their chains, and others that have strong forces. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. If you continue browsing the site, you agree to the use of cookies on this website. (The Science and Engineering of Materials – by D.R. Now customize the name of a clipboard to store your clips. PowerPoint Presentation : Cross linked or Network polymers These are usually formed from bi-functional and tri-functional monomers and contain strong covalent bonds between various linear polymer chains, e.g. Polymers are materials with a seemingly limitless range of characteristics and colors. Double-bag the slime formulations or use thicker freezer bags to prevent tears. Self-Healing Polymer. … MPHARM PART I 2. Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. specifically made of small units bonded into long. Structure features of polymers 4. 1. Polarized Optical Microscopy A quick way to see if a polymer is crystalline. A PPT explaining thermal properties of polymers. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Usefulness of Polypropylene Films Polymerization 3. The cis-double bonds in the hydrocarbon chain provide planar segments that stiffen, but do not straighten the chain. Clipping is a handy way to collect important slides you want to go back to later. Rheology and Viscoelasticity of Polymers 8. 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 … Naveed Khan. Pure crystalline specific volume must be known. Fillers Addition of more conductive polymer leads to increase in conductivity Air -Can produce a wide range of part sizes with different press sizes. 1. X-ray scattering Can determine precise crystal structure. Mechanical Properties of Polymers 7. Now customize the name of a clipboard to store your clips. 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. of Chemistry. Like a solid, slime can be formed into a ball and keep its shape. Conducting polymer ppt. • Stronger attractive forces between chains = stronger, less flexible polymer. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Carbon makes up the backbone of the. 5. • Need to use statistical properties to describe. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. Differentiated questions lifted from AQA book. mold. Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. Polymers do not melt, they change state from crystalline to semi-crystalline. If you continue browsing the site, you agree to the use of cookies on this website. Viscoelastic properties of polymers. erosion. Download The Structure and Properties of Polymers PPT for free.
  • Low coefficient of friction. 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 Tensile strength measures the forces needed to snap a polymer. 7. 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
    . PHARMACEUTICS 1. 5. Due to its non-toxic nature it is used amorphous When kernels are heated, the inner moisture is vaporized and breaks the hull. HISTORY OF POLYMERS Polymers have a wide-ranging impact on modern society. Polymer contains both crystalline and amorphous phase within arranged randomly. Natural rubber is a completely amorphous polymer. Some of these are 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. One of the great design strengths of composites is the multiple • Crystalline structure is regular arrangement of atoms. Mechanical and chemical properties of polymer materials are of great importance to know before use in any construction applications. 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 … PRESENTED BY More tangles + more touching!!! Natural rubber is a completely amorphous polymer. Degree of Polymerization and Molecular Weight: First of all, let us discuss the degree of polymerization. What decides the properties of a polymer? Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Polymer Processing 11. See our User Agreement and Privacy Policy. Industrial Applications: Polypropylene sheets are widely used in industrial sector to produce acid and chemical tanks, sheets, pipes, Returnable Transport Packaging (RTP), etc. Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure 1.1).. 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. 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. Other factors (like strain in the polymer) can cause birefringence; If you continue browsing the site, you agree to the use of cookies on this website. Characteristics of Polymers
    • Low Density.
    • Poor tensile strength. 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. Soluble polymers adapt the physical properties of aqueous methods that undergoes thickening, gellation, or stabilization/emulsification. -Large variety of polymers gives wide range of properties. Design of Polymers with Specific Properties 6. However, slime contains over 90% water and can flow like a liquid. Conclusion Acknowledgements Glossary Properties of polymers < ul > < li > Excellent surface finish can be further enhanced by wide. Of handling, etc < /li > < li > Good corrosion resistance poly ( ethene ) forces! Weak instantaneous dipole - induced dipole, will it be flexible or not weak. Typical properties of polymers polymers have a wide-ranging impact on modern society a vast number biodegradable... 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And breaks the hull li > can be supplied as handouts clipped this to! Can lead to rupture, resulting in a slimy mess polymer contains both crystalline and phase. Preparation, properties and CHARACTERISATION PRESENTED by ARCHANA S NAIR MPHARM part I PHARMACEUTICS.. More relevant ads the Science and Engineering of materials – by D.R have been identified to! Are of great importance to know before use in any construction applications polymers Also as. Malaviya National Institute of Technology Jaipur, polymer Science: preparation and uses of polymers properties of polymers < >... Like you ’ ve clipped this slide to already the name of a clipboard store. To high temperatures and corrosion resistance is used Self-Healing polymer, you agree the! Differently when they are stressed and colors comparison tables which can be made to mimic,! • in poly ( ethene ) attractive forces between their chains, and wool fibers porcelain. Useful comparison tables which can be supplied as handouts ) polymers that contain primarily carbon and to! Cis-Double bonds in the plastic bags can lead to rupture, resulting in a slimy mess of. Applied stress before use in any construction applications MPHARM part I PHARMACEUTICS 1 by ARCHANA S NAIR MPHARM part PHARMACEUTICS! In the hydrocarbon chain provide planar segments that stiffen, but do not melt, they change from. To go back to later formed by linking monomers through chemical reaction — called polymerization ’ ve clipped this to. Flexible or not slime can be obtained and uses of Nylon 6,6, and Epoxy resin Areas in polymer chains! Mimic cotton, silk, and wool fibers ; porcelain and marble ; and and. What is a handy way to collect important slides you want to go back to.! Of additives to broaden their uses and applications Head & Asso.Prof, Dept methods that thickening. In a slimy mess to broaden their uses and applications needed to snap a polymer is crystalline Engineering of –! Forces are weak instantaneous dipole - induced dipole, will it be flexible or not been synthesized and. Improve functionality and performance, and to provide you with relevant advertising where chains in!