1 Experiment 15: Exploring the World of Polymers Objective: In this experiment‚ you will explore a class of chemical compounds known as polymers. You will synthesize and modify polymers‚ test their properties and use a fabrication technique to produce an object from a polymer. Introduction (See Tro‚ pp 985-987.) The importance of both natural and synthetic polymers in our lives cannot be overestimated. The desirable properties of these macromolecules‚ such as tensile strength and flexibility
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Chemistry 26/03/2013 The polymer Introduction What is polymer? Polymer is a huge macromolecule comprise many thousands of small molecules created through Joining together chemically. Polymers are everywhere in our life. Many industries extremely rely on polymers‚ for example‚ food court‚ tons o ’toys and dollar dungeon. Those all are stuff made out of polymers. In addition there are lots kind of polymers ‚ such as aramid‚ Carbon fiber‚ Rayon and so on. Now‚ this Essay will investigate Tons
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6. POLYMERS and elastomers Lecture no. 1 Objectives: Definition‚ Functionality‚ Classification of high polymers – based on origin‚ molecular structure. 6.1.1. DEFINITION: The word polymer is derived from the two greek words‚ poly and meros‚ meaning many and parts or units respectively. Polymers are macro molecules formed by linking smaller molecules repeatedly‚ called monomers. Examples: Polythene is formed by linking a large number of ethene (or ethylene) molecules together
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1. Important characteristics required for materials in Automotive Engineering Polymers have been used in the automotive industry for many decades. It is regarded as an efficient material as it is very durable and could significantly reduce production costs. However‚ as technology advances‚ new polymers are found and better alternatives are paved for the automotive industry. The vehicles we see today are very different than that of the yesteryears. This proves how far the automotive industry has
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1. GUPTA‚ A.‚ BAJAJ‚ P.‚ & PALIWAL‚ D. (1998). Journal of Applied Polymer Science‚ 70(2703). Retrieved September 26‚ 2014. 2. Sreekumar‚ T.‚ & Sen‚ K. (2001). Effect of Reaction medium on Radical Polymerization of Acrylonitrile with Vinyl acids. Poly sci.‚ 79(1640). Retrieved September 26‚ 2014. 3. (n.d.). In http://www.pslc.ws/mactest/pan.htm. Retrieved September 26‚ 2014 4. Serkov‚ A.‚ & Radishevskii‚ M. (2008). Status and Prospects For Production Of Carbon Fibres Based on Polyacrylonitrile
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OHIO MILK CASE Introduction There are many different procurement markets in the world. Public sectors often use the system of auctions in order to ensure competition within these markets. Buyers announce their need of a specific good and the date of auction whereby the supplier with the smallest bid gains the contract. Suppliers need a lot of information beforehand in order to be able to react quickly to their competitors’ bids. The system of auctions however often encourages the formation of illegal
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MANAGEMENT – 1 CHAPTER -1 INTRODUCTION TO MANAGEMENT AND ORGANIZATIONS 1 | What is management ? | (June-2011) | 2 | What is classical approach to management ? Describe the contribution of F.W.Taylor in the development of scientific management. | (Nov/Dec-2011) | 3 | Define management. | (Dec-2010) | 4 | Explain “ Management is a Science as well as an Art ”. | (Dec-2010) | 5 | “ Management is not people; it is an activity like walking‚ reading‚ swimming or running. People who
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POLYMER COCNCRETE 1. Introduction Despite being thought of as a modern material‚ concrete has been in use for hundreds of years. The word concrete comes from the Latin concretus‚ which means “mixed together” or compounded. Concrete is an extremely popular structural material due to its low cost and easy fabrication. Concrete is made up of sand or stone‚ known as aggregate‚ combined with cement paste to bind it. Aggregate can be of various sizes. It is broadly categorized as fine (commonly
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CONDUCTING POLYMERS By Colin Pratt INTRODUCTION Until about 30 years ago all carbon based polymers were rigidly regarded as insulators. The idea that plastics could be made to conduct electricity would have been considered to be absurd. Indeed‚ plastics have been extensively used by the electronics industry because of this very property. They were utilized as inactive packaging and insulating material. This very narrow perspective is rapidly changing as a new class of polymer known as intrinsically
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Biodegradation is the breakdown of polymer by microbial organism such as bacteria‚ fungi etc. into smaller compounds. The microbial organisms degrade the polymer through metabolic or enzymatic processes. Synthetic plastics are resistant to degradation‚ and consequently their disposal is fuelling an international drive for the development of biodegradable polymers. A variety of natural‚ synthetic‚ and biosynthetic polymers are bio and environmentally degradable. A polymer based on a C-C backbone tends
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