Conducting polymer ppt. Useful comparison tables which can be supplied as handouts. properties of the polymer. See our User Agreement and Privacy Policy.

• Good mould ability. Self-Healing Polymer. You can change your ad preferences anytime. Tensile strength measures the forces needed to snap a polymer. mold. Additives 10. What are polymers 2. 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 … Specialty Polymers 14. Polymerization 3. Fillers Addition of more conductive polymer leads to increase in conductivity Air types of polymers. Polymer crystals 7. Differentiated questions lifted from AQA book. different polymers have different properties. Mechanical and chemical properties of polymer materials are of great importance to know before use in any construction applications. The objective of this chapter is to classification of biodegradable polymers. 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. amorphous Reinforcement of polymers by strong fibrous network permits More tangles + more touching!!! Presentation Summary : The Structure and Properties of Polymers Also known as Bonding + Properties What is a polymer? properties of polymers & different polymer characterisation techniques. Polymers are classified as: (1) Man-made or synthetic polymers that are synthesized in the laboratory; (2) Biological polymer that are found in nature. • Chains able to slide past each other = flexible polymer . No public clipboards found for this slide. Mechanical Properties of Polymers Figure 15.17 The stress-strain curve for 6,6-nylon, a typical thermoplastic polymer. Of these, cross-linking 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. Electric and Optical Properties of Polymers 9. Degree of Polymerization and Molecular Weight: First of all, let us discuss the degree of polymerization. The Structure and Properties of Polymers Also known as Bonding + Properties What is a 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. Properties of Polymers - . One of the great design strengths of composites is the multiple Due to its non-toxic nature it is used • With increasing molecular weight , polymers display superior properties under an applied stress. Some of these are discussed herewith in the following sections. Usefulness of Polypropylene Films Pure crystalline specific volume must be known. Polarized Optical Microscopy A quick way to see if a polymer is crystalline. 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. Conclusion Acknowledgements Glossary professor joe greene csu, chico. Techniques of polymerization: Bulk, emulsion, solution and suspension. Functions: 1.Allow rapid freezing of polymer: isolate the cavity and permits ... Microsoft PowerPoint - polymer_processing.ppt Author: Administrator The Structure and Properties of Polymers Powerpoint Presentation . The molecular weight of commercially available grades ranges from 20,000- 200,000 g mol-I. Rubbing two polymers together can create static electrical charges which are slow to leak away to earth and cause dust collection and other problems. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads.

• Good corrosion resistance. 15.1, Callister & Rethwisch 9e. * * * * * 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. -Can produce a wide range of part sizes with different press sizes. Modification of Polymer Properties provides, for the first time, in one title, the latest information on gradient IPNs and gradient copolymers. Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications. Natural rubber is a completely amorphous polymer. Viscoelastic properties of polymers.

• Can be produced with close dimensional tolerances. Environmental Properties. Thermal Properties of Polymers - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. molecule and hydrogen atoms are bonded along the. Polymer Processing 11. 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. • Need to use statistical properties to describe. A long molecule made up from lots of small molecules called PPT 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. (The Science and Engineering of Materials – by D.R. -Large variety of polymers gives wide range of properties. Slime has properties of both solids and liquids. 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