Exercise 1 Polymers – An introduction to Organic Chemistry Group 3 Jude Marchoni C. Tampus Meryl Marie Susan Chua Pearl Pontillas Paolo Pepito Gaia Casas I. Abstract: (Paolo) In this experiment we will be testing what would happen to the polymer when we add borax to it. A polymer is a compound made up of large molecules often in a solid state. Polymers are chemically formed by 100 to 10‚000 small molecules called "monomers". Monomers occur in molecular units or patterns
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Polymer Essay: Plexiglass Many of the glass screens and windows we see today are not really made of glass. They are made of plexiglass. Plexiglass is not related to the chemical structure of glass at all. It is an organic polymer. Today this polymer is used in all sorts of applications. The formation of plexiglass was begun in 1930‚ at McGi11 University by William Chalmers‚ a research student. He polymerized methacrylic ethyl ester and methacrylic nitirile‚ creating a clear plastic paste
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ges%3Fq%3Dhairspray%2Bhair%26start%3D60%26hl%3Den%26lr%3D%26ie%3DUTF-8%26sa%3DN Overall‚ I have learned a lot about hairspray. I now understand that it is the polymers that attach to the hair follicle. The compounds which cause "sticky" feeling which the actual spray have‚ mostly the alcohols‚ end up evaporating. This leaves the polymers to coat the hair‚ and provide the "hold". The chemistry of hairspray deals quite a bit with soluble and insoluble solutions. Based on what we have learned in chemistry
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Introduction Perspex is a type of amorphous polymer and has the following repeat unit : If the PMMA is heated ‚ the side group of the polymer will start to rotate. As the temperature gradually increase and reach a certain temperature ‚ the polymer would lose its stiffness and becomes elastic like a rubber. This temperature is also known as glass transition temperature ‚Tg. The Tg is always lower than melting point of the polymer. By heating and cooling the polymer‚ and observing the changes in their physical
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Street East Kew VIC 3102 Tel: (03) 9859 3344 Fax: (03) 9859 3411 Copyright © Environment Australia 2002 CONTENTS EXECUTIVE SUMMARY 1 2 INTRODUCTION TO BIODEGRADABLE PLASTICS ........................................1 BIODEGRADABLE STARCH-BASED POLYMERS ..........................................3 2.1 Thermoplastic Starch Products 2.2 Starch Synthetic Aliphatic Polyester Blends 2.3 Starch and PBS/PBSA Polyester Blends 2.4 Starch-PVOH Blends 3 4 5 6 3 BIODEGRADABLE POLYESTERS .............
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Polymer technology explained using text and animations Multimedia Design and Technology Education Plastics Technology Animations of Processes This “Plasics Module” covers the plastics technology specifications for KS3 and GCSE courses‚ including: Structure‚ composition and properties of polymers Polymer composites Formulae of common polymers Hazards – polymers leaching chemicals Sustainability Recycling Abbreviations of polymers
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Page 88-90 stated that plastics are polymers and are chemically unreactive because they are held together by stable single bonds‚ which also results in their chemical stability. The stability of plastics makes them resilient to breakage making them good replacements for fragile items such as glass. Some plastics are weakened and dissolved by organic non-solvents so not all plastics can be used for the same purposes. Plastics are moulded to different shapes with some being flexible like plastic bags
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Materials Final Review (TESTS I‚ II‚ & III) Part I : Multiple Choice 1) As the temperature of a polymer increases‚ its density a. Increases b. Decreases c. Remains fairly constant 2) Which one of the three polymer types does not involve cross-linking: a. Elastomers b. Thermoplastics c. Thermosets 3) Degree of polymerization is which of the following: a. Average number of mers in the molecule chain b. Proportion of the monomer that has been polymerized c. Sum of the molecule weights of the
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applications Hear the latest regulatory‚ environmental‚ and testing findings Intensive Short Course Selection‚ Evaluation‚ and Commercial Application of Flame Retardant Polymers Sunday‚ May 20‚ 2012‚ 8:30 a.m.–5:30 p.m. Course Director: Charles Wilkie‚ Marquette University The Course Instructors Edward D. Weil‚ Professor‚ Polymer Research Institute‚ Polytechnic Institute of NYU‚ Brooklyn‚ NY Sergei
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soluble synthetic polymer (Maciborski‚ and Salamone)‚ while Borax is a natural mineral with many household uses. It can be used as herbicide‚ to bleach teeth‚ as a household cleaner‚ and a laundry booster‚ to name a few (Helmenstine). Figure 1: chemical diagrams of PVA(Adkins) and Borax (Lee)‚ respectively The two combine to form a slimy eco-friendly substance due to the crosslinking between polymer chains (“Nuffield Foundation”) Polymers are composed of
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