Polymer Chemistry Classification of Polymers – Notes prepared by The most common way of classifying polymers is to separate them into three groups - thermoplastics‚ thermosets‚ and elastomers5. The thermoplastics can be divided into two types - those that are crystalline and those that are amorphous. You may click on the words in the diagram below to learn more about these classifications. Thermoplastics Molecules in a thermoplastic are held together by relatively weak intermolecular
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1.1 DEFINING POLYMERS Polymers are materials of very high molecular weight that are found to have multifarious applications in our modern society. They usually consist of several structural units bound together by covalent bonds [1‚2]. For example‚ polyethylene is a long-chain polymer and is represented by ÀCH2 CH2 CH2 À or ½ÀCH2 CH2 Àn ð1:1:1Þ where the structural (or repeat) unit is ÀCH2ÀCH2À and n represents the chain length of the polymer. Polymers are obtained through
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MAKTAB RENDAH SAINS MARA KEPALA BATAS PULAU PINANG FOLIO KERJAYA: ACCOUNTANT NAME : MUHAMMAD SYAZWAN BIN MAHADI IC NO. : 950513-07-5091 CLASS : 505 COLLEGE NO. : 08071 GURU :MRS. HASLINA BINTI ABDUL AZIZ No. | Title | Page | 1. | INTRODUCTION | 3-4 | 2. | W - Work Condition | 5 | 3. | I - Implications For Lifestyle. | 6 | 4. | N - Nature Of Work | 7 | 5. | N - Need By Society And Community | 8 | 6. | E - Entry‚ Training And Prospects | 9-14
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The Olympics The Olympic games are among the worlds major events in which athletes from all over the world take part in different competitions which they train for night and ad to win a gold medal or even a place in the competition. The games are divided into two; the summer and winter Olympics where the host cities manage both of the Olympics and Paralympics games. The games are held every four years in different cites chosen by the International Olympic committee. These games have a history dating
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C) Type of pollution. 1. WATER POLLUTION — any contamination of water that has deteriorated its quality to living things. * SOURCE: There are many causes for water pollution such as effluent outfalls from factories‚ refineries and waste treatment plants. More to that‚ the contaminant that enter the water supply from the soil or groundwater systems. Soils and groundwater contain residue of human agricultural practise and improperly disposed of industrial wastes. Other than that‚ the habits
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Synthetic fibers and synthetic fabrics consist of bulk fibers‚ yarns‚ woven cloth or other textile products manufactured from polymer-based materials such as polyamide (nylon)‚ polyester‚ aramid‚ or other spun thermoplastics. Basic product types include: fibers and monofilaments‚ roving and yarn‚ carded and needlepunched non-wovens‚ braided products‚ rope and cordage‚ webbing‚ blankets or batts‚ sleeves or wraps‚ and thread. Bulk chopped fibers or thin‚ continuous fiber filaments are used typically
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Fall 2016 students of this section General Studies Program (GSR) 300 capstone experience- First Folio course is a greatest experience for undergraduate. The course is the national touring exhibition First folio‚ “The Book that Gave Us Shakespeare”. Students were learn how to be an active role in this project “First Folio” become good role docent of museum exhibitions. Students have to learn the historical Shakespeare in Deaf community history of the first documents‚ as well as the United States deaf
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Polymers are a part of our every day life and without them around‚ this world would be very‚ very different‚ if not impossible to live in. However‚ most people do not even know what a polymer is‚ or just how widespread they are around us. Polymers are formed from hydrocarbons‚ hydrocarbon derivatives‚ or sometimes from silicon. They are the basis not only for numerous natural materials‚ but also for most of the synthetic plastics that one encounters in their lives. Polymers consist of extremely large
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------------------------------------------------- PART 1 ------------------------------------------------- History Predecessors The Babylonians sometime in 2000–1600 BC may have invented the quarter square multiplication algorithm to multiply two numbers using only addition‚ subtraction and a table of squares.However it could not be used for division without an additional table of reciprocals. Large tables of quarter squares were used to simplify the accurate multiplication of large numbers
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1. What does it mean when a polymer is crosslinked? Crosslinked is one manner in which monomers link together. In this method‚ separate polymer chains are connected via bonds between the individual polymer chains. 2. We discussed how polymer linking and structure contribute to its properties. How would you expect the density‚ elasticity‚ and rigidity of a polymer that is branched to compare to one that is linear? I would expect the density of the linear polymer to be much higher than the density
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