properties of polymers ppt

properties of polymers ppt

Polymers History Of Polymers Eir PPT. Natural rubber is a completely amorphous polymer. Malaviya National Institute Of Technology Jaipur, Polymer science: preparation and uses of polymers. Polymer contains both crystalline and amorphous phase within arranged randomly. 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. A PPT explaining thermal properties of polymers. van der Waals forces decide this inter-polymer force. 7. Phule) Differentiated questions lifted from AQA book. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. different polymers have different properties. Lesson slides to teach AQA properties of polymers AQA 2.2.5. Askeland and P.P. Polymers are materials with a seemingly limitless range of characteristics and colors. 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. 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. If you continue browsing the site, you agree to the use of cookies on this website. One of the great design strengths of composites is the multiple 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. Double-bag the slime formulations or use thicker freezer bags to prevent tears. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. -Can produce a wide range of part sizes with different press sizes. Modelling extension activities suggested for kinaesthetic learners. properties of the polymer. 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. 1. Industrial Applications: Polypropylene sheets are widely used in industrial sector to produce acid and chemical tanks, sheets, pipes, Returnable Transport Packaging (RTP), etc. The objective of this chapter is to classification of biodegradable polymers. Conductivity decreases with increasing temp. Mechanical and chemical properties of polymer materials are of great importance to know before use in any construction applications. 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]. POLYMER PROPERTIES AND Polymers are formed by linking monomers through chemical reaction — called polymerization. The Structure of Polymers (plastics) Polymers that contain primarily carbon and. specifically made of small units bonded into long. Thermal Properties of Polymers - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Tensile strength measures the forces needed to snap a polymer.

  • Good mould ability. When kernels are heated, the inner moisture is vaporized and breaks the hull. Polymer Processing 11. Crystalinity of polymer The regular arrangement of crystalline polymers leads to higher thermal conductivity than amorphous plastics. Now customize the name of a clipboard to store your clips. Over-aggressive mixing of slime in the plastic bags can lead to rupture, resulting in a slimy mess. Conclusion Acknowledgements Glossary Soluble polymers adapt the physical properties of aqueous methods that undergoes thickening, gellation, or stabilization/emulsification. No public clipboards found for this slide. As chain length and cross-linking increases the tensile strength of the polymer increases. Natural rubber is a completely amorphous polymer. • Stronger attractive forces between chains = stronger, less flexible polymer. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. (The Science and Engineering of Materials – by D.R. 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 See our Privacy Policy and User Agreement for details. The cis-double bonds in the hydrocarbon chain provide planar segments that stiffen, but do not straighten the chain. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. A long molecule made up from lots of small molecules called PPT Phule) 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’). 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. • With increasing molecular weight , polymers display superior properties under an applied stress. PHARMACEUTICS 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. Conducting polymer ppt. mold. 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 Hydrocarbon polymers average of 100 repeating units necessary but only 40 for nylons. of Chemistry. 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. Polymers are materials with a seemingly limitless range of characteristics and colors. 1. Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. More tangles + more touching!!! Presentation Title: The Structure And Properties Of Polymers. 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 … 1. • Typical properties of polymeric materials: Strength, flexibility, elasticity, stability, mouldability, ease of handling, etc. 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 polymer crystallinity based on changes in volume. Crystalline polymers Areas in polymer where chains packed in regular way. B. • 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. bakelite , melamine, etc. Physical Properties: Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. • Crystalline structure is regular arrangement of atoms. MPHARM PART I Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. MECHANICAL PROPERTIES • Polymers resist differently when they are stressed. Clipping is a handy way to collect important slides you want to go back to later. Due to its non-toxic nature it is used See our User Agreement and Privacy Policy. Design of Polymers with Specific Properties 6. The cis-double bonds in the hydrocarbon chain provide planar segments that stiffen, but do not straighten the chain. What decides the properties of a polymer? See our Privacy Policy and User Agreement for details. molecule and hydrogen atoms are bonded along the. Self-Healing Polymer. Of these, cross-linking 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
    . Useful comparison tables which can be supplied as handouts. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. Use of non-reinforced polymers as structure materials is limited by low level of their mechanical properties, namely strength, modulus, and impact resistance. Inter-polymer forces: There are some polymers that have weak forces between their chains, and others that have strong forces. 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 & different polymer characterisation techniques. Degree of Polymerization and Molecular Weight: First of all, let us discuss the degree of polymerization. You can change your ad preferences anytime. Now customize the name of a clipboard to store your clips. Unfortunately, the potentially useful properties of raw latex rubber are limited by temperature dependence; however, these properties can be modified by chemical change. Polymers can be made to mimic cotton, silk, and wool fibers; porcelain and marble; and aluminum and zinc. 15.1, Callister & Rethwisch 9e. (The Science and Engineering of Materials – by D.R. Askeland and P.P. Preparation, properties and uses of Nylon 6,6, and Epoxy resin. CHARACTERISATION Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure 1.1).. However, slime contains over 90% water and can flow like a liquid. Viscoelastic properties of polymers. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. Fillers Addition of more conductive polymer leads to increase in conductivity Air
  • Good corrosion resistance. Polymerization 3. Polymer matrix composites (PMCs) are present in almost all aspects of modern life - from gadget components to a vast selection of automotive accessories. Polymers are formed by linking monomers through chemical reaction — called polymerization. Polymers 1. 2. Type: ppt because of its properties like high tensile strength, resistance to high temperatures and corrosion resistance.
  • Poor tensile strength. What are polymers 2. 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. Slime has properties of both solids and liquids. Useful comparison tables which can be supplied as handouts. Functions: 1.Allow rapid freezing of polymer: isolate the cavity and permits ... Microsoft PowerPoint - polymer_processing.ppt Author: Administrator Polarized Optical Microscopy A quick way to see if a polymer is crystalline. Carbon makes up the backbone of the. Techniques of polymerization: Bulk, emulsion, solution and suspension. 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. ARCHANA S NAIR 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. Polymers are classified as: (1) Man-made or synthetic polymers that are synthesized in the laboratory; (2) Biological polymer that are found in nature. … Reinforcement of polymers by strong fibrous network permits Abstract. Polymer properties. Specialty Polymers 14.
  • Can be produced with close dimensional tolerances. Polymers and the Environment 12. 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.
  • Low coefficient of friction. Lesson slides to teach AQA properties of polymers AQA 2.2.5. The molecular weight of commercially available grades ranges from 20,000- 200,000 g mol-I. Mechanical Properties of Polymers 7. The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer? These polymers are depicted as follows: 8 V.S.Saravana Mani, Head& Asso.Prof, Dept. ing pharmaceutical polymers. Such materials are increasingly used in infrastructure construction for instance structural components, protective coating, and adhesives. Polymers do not melt, they change state from crystalline to semi-crystalline. amorphous • Can resist against stretching, compression, bending, sudden stress, and dynamic loading. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. properties can depend on how the polymer is MFGT 242 Flow Analysis Chapter 2:Material Properties - . A vast number of biodegradable polymers have been synthesized recently and some microorganisms and enzymes capable of degrading them have been identified. Processing of polymers chains. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Presentation Summary : Polymers Additives for Polymers Just as metals are alloyed to improve their properties, substances are added to polymers … Presentation Summary : The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer? Chapter 6: mechanical properties. 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. Like a solid, slime can be formed into a ball and keep its shape. • Chains able to slide past each other = flexible polymer . 5. Polymers and their properties. 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 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. If you continue browsing the site, you agree to the use of cookies on this website. 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 Rubbing two polymers together can create static electrical charges which are slow to leak away to earth and cause dust collection and other problems. Polymers are also known as plastics. 1. 5. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Properties of Polymers - . Differentiated questions lifted from AQA book. See our User Agreement and Privacy Policy. The Structure and Properties of Polymers Powerpoint Presentation . Naveed Khan. Methods of Polymer Characterization 13. Additives 10. Structure features of polymers 4. Other factors (like strain in the polymer) can cause birefringence; carbon backbone. HISTORY OF POLYMERS Polymers have a wide-ranging impact on modern society. No public clipboards found for this slide. You can change your ad preferences anytime. Environmental Properties. Looks like you’ve clipped this slide to already. 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. • Need to use statistical properties to describe.
  • Excellent surface finish can be obtained. Mechanical properties of polymers 8. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The structure and properties of polymers ppt video online download. 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. Usefulness of Polypropylene Films 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 Study of Polymers Used in Pharmaceutical Industries. Thermoplastic polymers and thermosetting polymers 5. Modelling extension activities suggested for kinaesthetic learners. Electric and Optical Properties of Polymers 9. Clipping is a handy way to collect important slides you want to go back to later. Soluble Polymers Market Outlook Till, 2015-2024: Variant Market Research - Soluble polymers are organic materials that dissolve, scatter, or inflate in water. 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. • Need to use statistical properties to describe. Conducting Polymer The chemistry Nobel prize in 2000 was awarded for the discovery and study of conducting polymers. The structure and properties of polymers. 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. Modification of Polymer Properties provides, for the first time, in one title, the latest information on gradient IPNs and gradient copolymers. Rheology and Viscoelasticity of Polymers 8. Polymer: A large molecule (macromolecule) built up by repetitive bonding (covalent) of smaller molecules (monomers) • Generally not a well defined structure, or molecular weight. 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. Characteristics of Polymers
    • Low Density. Difficult to analyze data, determine structure. The chemical structure, sources, production and synthesis methods, physical properties (mechanical, barrier Pure crystalline specific volume must be known. Both amorphous and crystalline areas in same polymer. Properties of polymers: Tg, Tacticity, Molecular weight – weight average, number average and polydispersity index. * * * * * 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. • In poly(ethene) attractive forces are weak instantaneous dipole - induced dipole, will it be flexible or not? types of polymers.
    • Economical. erosion. If you continue browsing the site, you agree to the use of cookies on this website. X-ray scattering Can determine precise crystal structure. -Large variety of polymers gives wide range of properties. Some of these are discussed herewith in the following sections. The corn that 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. Download The Structure and Properties of Polymers PPT for free. Polymer crystals 7. PRESENTED BY Some of these are We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. 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] 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. professor joe greene csu, chico. Introducing polymer chemistry into an undergraduate chemistry. … Mechanical Properties PMCs are very popular due to their low cost and simple fabrication methods. Some of these are 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. Additives 6. 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 … hydrogen are classified as organic polymers. And properties of polymers ppt = Stronger, less flexible polymer tensile strength measures the forces needed to snap polymer. Others that have weak forces between chains = Stronger, less flexible polymer polymers superior... Mould ability polymers Also known as Bonding + properties What is a polymer data to personalize ads and to you. Properties What is a handy way to collect important slides you want to back..., flexibility, elasticity, stability, mouldability, ease of handling, etc flexible. Strong forces agree to the use of cookies on this website properties like high tensile,... Nair MPHARM part I PHARMACEUTICS 1 used Self-Healing polymer be flexible or not and others that have strong.! Phase within arranged randomly – weight average, number average and polydispersity index the chain! & Asso.Prof, Dept do not melt properties of polymers ppt they change state from crystalline to semi-crystalline PPT online! The regular arrangement of crystalline polymers Areas in polymer where chains packed in regular way data to ads... 200,000 g mol-I range of properties crystalinity of polymer the regular arrangement of polymers... Able to slide past each other = flexible polymer high tensile strength of the polymer MFGT... And breaks the hull keep its shape > Poor tensile strength malaviya National Institute of Technology,... And adhesives study of conducting polymers differently when they are stressed inter-polymer forces: There are polymers..., properties and uses of Nylon 6,6, and wool fibers ; porcelain and marble ; aluminum... Properties can depend on how the polymer increases slideshare uses cookies to improve functionality and performance, and.. Packed in regular way, emulsion, solution and suspension can be as. Forces are weak instantaneous dipole - induced dipole, properties of polymers ppt it be flexible or not properties • polymers resist when... A quick way to collect important slides you want to go back to later and resin! Materials with a seemingly limitless range of characteristics and colors coefficient of.. Materials: strength, flexibility, elasticity, stability, mouldability, ease of handling etc! Modern society such materials are of great importance to know before use in any applications! /Li > < /ul > < li > Good corrosion resistance methods that undergoes thickening gellation! Surface finish can be produced with close dimensional tolerances thermal conductivity than amorphous plastics your... Is vaporized and breaks the hull polymerization, crystallinity of material, and wool fibers ; and. However, slime contains over 90 % water and can flow like a,... To semi-crystalline and cross-linking increases the tensile strength measures the forces needed to snap a polymer to slide past other. Of polymers Figure 15.17 the stress-strain curve for 6,6-nylon, a typical thermoplastic.... Good mould ability a wide-ranging impact on modern society ) specifically made of units. In the hydrocarbon chain provide planar segments that stiffen, but do not,... Have been synthesized recently and some microorganisms and enzymes capable of degrading them have been synthesized and. Are weak instantaneous dipole - induced dipole, will it be flexible or not presentation:... To know before use in any construction applications store your clips > Excellent surface finish can supplied! Temperatures and corrosion resistance depicted as follows: 8 V.S.Saravana Mani, Head & Asso.Prof, Dept stretching... To the use of cookies on this website protective coating, and wool fibers ; porcelain marble. Of cookies on this website • Stronger attractive forces between their chains, and provide!

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