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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yChapter 3. Polymer Processing Polymer Process Techniques Fig. 3.1. Procedure for casting sheets of polymer. Polymer Materials Page 2 Polymer Process Techniques HEMA = hydroxyethyl methacrylate EGDMA = ethylene glycol dimethacrylate Fig. 3.2. Centrifugal mold for poly(hydroxyethyl methacrylate) contact lenses Solvent casting of films Fig. 3.3. Laboratory spreading device for the solution casting of films. Polymer Materials Page 3 Polymer Process Techniques
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MATHS IN DAILY LIFE Mathematics is an integral part of our life. Right from the time we wake up in the morning till we go to sleep‚ invariably we are using mathematics in one or the other way. Teaching mathematics in classroom using pictures from daily life can help students in understanding a concept in a better manner. For instance‚ when a child is introduced the concept of 3 dimension‚ he/she is not able to visualize it. Learning of this concept can be made simpler and interesting by showing
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Geometry in Everyday Life Geometry in everyday life Geometry was thoroughly organized in about 300bc‚ when the Greek mathematician‚ Euclid gathered what was known at the time; added original work of his own and arranged 465 propositions into 13 books‚ called Elements. Geometry was recognized to be not just for mathematicians. Anyone can benefit from the basic learning of geometry‚ which is to follow the lines reasoning. Geometry is one of the oldest sciences and is concerned with questions
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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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Economics of Daily Life Leah Hand Stevens-Henager College Economics of Daily Life Economics is a study of how society manages its scarce resources. The literal translation for economy is “one who manages a household.” “In an increasingly complex world connected by social and economic interaction and interdependence‚ news of stock market fluctuations‚ consumer confidence scores‚ and various economic indicators fill the media” (Broome & Preston-Grimes‚ 2011). This means that economics is
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The Use of Algebra in our Daily Life. 1. Algebra is a method of calculating using simple equations to represent quantity and to show relation between them. Algebra is also a part of our life‚ we use it on measuring the length of our table‚notebooks‚doors and other more. Another concept of mine is measuring capacity‚In school we always measure the right amount of ingredients that we cook. Because to an culinary student like me we are showing how to measure the exact amount of ingredients that
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POLYNOMIALS IN DAILY LIFE Polynomials are a combination of several terms that can be added‚ subtracted or multiplied but not divided. While polynomials are in sophisticated applications‚ they also have many uses in everyday life. Although many of us don’t realize it‚ people in all sorts of professions use polynomials every day. The most obvious of these are mathematicians‚ but they can also be used in fields ranging from construction to meteorology. Polynomials in Construction and Material
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TECHNOLOGY IN DAILY LIFE All of us are aware of the fact that intensive research in various scientific fields developed over several centuries lead to technology development for several applications which is making our life simpler and easier on several fronts. Technology developed by our ancestors is helping us so much that we are taking them for granted. But without these developments life would have been very hard and difficult to visualize. Technology development
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of them are different types of clothing‚ or cloth. Good portions of these are combinations of synthetic fibers woven or threaded together to make a final product. These synthetic fibers are a large group of polymers. Synthetic polymers offer more possibilities‚ since they can be designed with molecular structures that impart properties for desired end uses. All fibers are ploy-something or polymers. That means they are long strings of repeating chemical elements. Some fibers come from ground
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