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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Context * Introduction * Daily Life Applications * Fluorine * Introduction * Properties And Uses Of Fluorine * Fluoridation Of Water * Chlorofluorocarbons * Chlorine * Introduction * Uses Of Chlorine * Chlorine And Organic Compounds * Bromine * Introduction * Halogen Lamps * Iodine * Introduction * Uses And Applications * Astatine * Introduction * Uses And Applications Introduction & daily life applications of halogens INTRODUCTION:
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New Begin After the summer vacation was over‚ I went back to school . The new semester began. The familiar campus evoked memories of my first. I still remembered I couldn’t find the classroom and there was a light quiver in my voice‚ my hands were shaking when I stood in front of the class to introduce myself in my first class last year. In the beginning‚ I felt uneasy and nervous in the unfamiliar surroundings. Luckily‚ I made lot of friendly friends and also oriented myself in school over the
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Daily Use of Physics Jason L. McDuffy University of Memphis Physics 1 (online) Project 1 Daily Use of Physics Physics is considered to be a powerful lens that helps people view the everyday world. Physics is reflected in the everyday phenomena‚ puzzles and toys that offer a variety of interesting challenges leading to deep and interesting problems that derive from science and mathematics. It provides us an understanding of energy‚ motion and explains these facts as
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[pic] Daily Life: All the things that happen or that you do regularly. Chemistry in Daily Life: Chemistry is a big part of our everyday life. We find chemistry in daily life in the foods we eat‚ the air we breathe‚ our soap‚ our emotions and literally every object we can see or touch. Here’s a look at some everyday chemistry. [pic] Actually‚ we found chemistry every were in our daily life‚ in every sector of our life. Importance of Chemistry: Chemistry is important in everyday life because everything
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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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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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3hours 15 minutes Maximum marks: 70 Instructions: 1. The question paper has four parts: A‚ B‚ C and D. All parts are compulsory. 2. Write balanced chemical equations and draw labeled diagrams wherever required. 3. Use log tables and the simple calculator if necessary. (Use of scientific calculators is not allowed) PART-A I. Answer ALL of the following. (Each question carries 1 mark) 10x1=10 (Answer each question in one word or in one sentence) 1. Name a colligative property. 2. What
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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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Chapter 9 The World of Plastics and Polymers Overview • Plastics are all around us – Polymers‚ materials whose molecules consist of long chain of atoms • Natural • Synthetic • Use of material and impact on economy‚ lifestyle‚ and leisure – Word plastic to some carry connotation “cheap” or “tacky” – Synthetic polymers revolutionised modern life • eg plastics become important in automobile industry‚ some new plastics stronger than steel and resist corrosion‚ less dense than structural
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