1 The monomer for POM is shown in Fig. B. The major peak at wavenumber -1 903 cm is due to the C-O-C symmetric stretch absorption. The peak at wavenumber 1097 cm-1 is due to the C-O-C asymmetric stretch. The peak at wavenumber 2923 cm-1 is due to the CH2-O asymmetric stretch. All of these vibration modes are indications of the specific molecular bonding within the sample and can be used to identify the material. TM Fig. B - Poly(oxymethylene) or POM or Delrin monomer. The library
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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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(PVC). This material was made in 1872 by German chemist Eugen Baumann on accident. Polyvinyl Chloride is made with Chlorine (Cl) and ethylene. When these two are combined ( at extremely high temperatures) they create vinyl chloride monomer. The vinyl chloride monomer can then be polymerized to make polyvinyl chloride. Polyvinyl Chloride is then turned into what we call “synthetic leather”. Chlorine is found in the ocean water‚ as a part of sodium chloride (NaCl). It’s also found in the earth’s crust
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PUSAT PENGAJIAN TEKNOLOGI INDUSTRI IMG 103/3 FOOD CHEMISTRY LAB REPORT Experiment 3 : Qualitative Test for Carbohydrate Date of Experiment: 27/03/2013 Date of Submission: 17/04/2013 Submitted by: Name: Te Hui Min Matric No.: 115615 Group: 4 Title Qualitative test for carbohydrate Introduction Carbohydrates are essential in foods as an energy source (starch is the main source of human calories)‚ a flavouring (simple sugars are usually sweet) and as a functional
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SHEET 3.COMPOSITION / INFORMATION ON INGREDIENTS SUBSTANCE : Substance INGREDIENTS AND COMPOSITION : 99.8 % or more by weight CHEMICAL FORMULA : CH2=C(CH3)COOCH3 CAS No. : 80-62-6 UN CLASS :3 UN NO. : 1247 (Methyl Methacrylate Monomer‚ Stabilized) (Flammable liquid‚ PG.2) 4. FIRST AID MEASURES EYE CONTACT Immediately and gently flush the affected eye(s) well with copious amount of clean water for 15 minutes. Get immediate medical attention. SKIN CONTACT Immediately remove
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taking place in the cells of an organism. * Name the monomers and polymers of carbohydrates‚ proteins and nucleic acids. | Monomer | Polymer | Carbohydrates | Monosaccharides (simple sugars) | Polysaccharides | Proteins | Amino acids | Polypeptides and proteins | Nucleic Acids | Nucleotides | DNA and RNA | * Describe the general features of condensation and hydrolysis reactions. Condensation reactions link monomers together. The same reaction is repeated many times to make
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ethylene serves as a monomer from which polymers are made • • • Ethylene is polymerised to polyethylene High pressures produce soft‚ low density polyethylene‚ consisting of tangled chains (with molecular masses 100‚000) 5) Identify polyethylene as an addition polymer and explain the meaning of the term Addition polymerisation: a process in which many identical small molecules combine to form one large molecule‚ with no by-products. The small molecules are called monomers‚ while the large molecule
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ABCT 1101/ABCT1D04 Introductory Life Science INTRODUCTORY LIFE SCIENCE At our 3rd lecture‚ we want to discuss • The building blocks of biological organisms – Carbohydrates‚ proteins‚ lipids and nucleic acids • Cell structure and function – Cell membrane‚ ER‚ Golgi‚ cytoskeleton‚ nucleus – Plant cell vs. animal cell Simple Chemistry for Life Science • Each element consists of one kind of atom. – An atom is the smallest unit of matter that still retains the properties of an element
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HSC Chemistry Topic 1 PRODUCT ON of MATERIALS What is this topic about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. POLYMERS FROM PETROCHEMICALS & BIOMASS 2. ALTERNATIVE FUELS - ETHANOL & THE ALKANOLS 3. REDOX CHEMISTRY & BATTERIES 4. RADIOACTIVITY & ITS USES ...all in the context of society’s use of energy and materials but first) an introduction ... In the previous topic in the Preliminary Course‚ you learnt about carbon chemistry of petroleum Then you
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Institute of Higher Education 14 March 2018 Abstract Biological molecules are part of Introduction Biological molecules are formerly known as macromolecules. Macromolecules are large molecules that are formed from smaller molecules called monomers (Ellisman‚ 2014). They are formed by dehydration reactions‚ in which a water molecule is removed during the formation of bonds (Wayne Huang‚ 2015). Biological molecules are organic‚ indicating that they contain carbon and hydrogen atoms (Gair‚ 2013)
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