Polymers. Different polymers have a number of unique physical and chemical properties due to which they find usage in everyday life. HISTORY:-Polymers were discovered long before anyone understood what they were. Henri, along with Christian Schönbein and others, developed derivatives of the natural polymer cellulose, producing new, semi-synthetic materials, such as celluloid and cellulose acetate. The first modern example of polymer science is Henri Braconnot's work in the 1830s. The word polymer is derived from the classical Greek words poly meaning “many” and meres meaning “parts.” Simply stated, a polymer is a long-chain molecule that is composed of a large number of repeating units of identical structure. PowerPoint Presentation : Suspension polymerization most commonly used as industrial manufacturing method in order to get polymer for forming material such as polystyrene, polymethylmethacrylate , polyvinyl acetate, polyvinyl chloride, because a polymer with a high degree polymerization is obtained with the polymerization and generated polymer isolation is easy. Pre-synthetic polymers The investigation of the nature of materials and the creation of polymers is just beginning and is unknown to the inventors. HISTORY OF POLYMERS Polymers have a wide-ranging impact on modern society. Polymers are classified as: (1) Man-made or synthetic polymers that are synthesized in the laboratory; (2) Biological polymer that are found in nature. Share Flipboard Email Print ... Hermann Staudinger to realize that Simon's discovery, comprised of long chains of styrene molecules, was a plastic polymer. POLYMER SCIENCE AND TECHNOLOGY Third Edition Joel R. Fried Upper Saddle River, NJ • Boston • Indianapolis • San Francisco New York • Toronto • Montreal • London • Munich • Paris • Madrid ws.1_polymers_-_addition_polymers_and_condensation_polymers.doc: File Size: 51 kb: File Type: doc Linear polymers, which are composed of chainlike molecules, may be viscous liquids or solids with varying degrees of crystallinity; a number of them can be dissolved in certain liquids, and they soften or melt upon heating. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum.. No enrollment or registration. Next Topic: Future Trends Polymers Table of Contents MAST Home Page These polymers have a similar structure to the polyamides, which have the urethane (carbamate) group as part of the polymer backbone. However, DuPont chose to concentrate on the more promising nylon research. The word polymer means “of many parts,” and polymers are made of long chains of molecules. Academia.edu is a platform for academics to share research papers. This powerpoint presentation refers to introduction to n&c tutorials. Thermosets usually are three-dimensional networked polymers in which there is a high degree of cross-linking between polymer chains. A simulated skeletal structure of a network polymer with a high cross-link density is shown below. Self-healing polymers for biomedical areas have focused on all classes of polymers, from thermosets to thermoplastics to elastomers [20]. Polymers make up many of the materials in living organisms, and they constitute the basis of certain minerals and human-made materials, such as paper and plastics. Polymers: General Properties and Applications The following inquiry -based student activities are designed for use in high school lesson planning. Polymerization. Accounts, Chemistry, Economics (8 ... History of classification of elements. Biodegradable Polymers. This knowledge sharing is provided to inform the next generation of material processors and engineers. Polymers and Polymerization Reactions. Polymers abound in nature. The polymer that became polyester has roots in the 1929 writings of Wallace Carothers. Polymers: Long-Chain Molecules Made Up of Identical Units. Download Polymer PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. Grades: 9-12 . Polymers History Of Polymers Eir PPT. Welcome! 1 Synthetic and Biological Polymers. Wolmer’s Boys’ School CAPE Unit 2 Chemistry Module 1. Polymers: Large Molecules. This is one of over 2,200 courses on OCW. Polymers may be naturally found in plants and animals (natural polymers) or may be man-made (synthetic polymers). Polymers. Carbon-Based Polymers. chemistry, polymer properties, types of polymers, polymers in pharmaceutical and biomedical industries, and reviews of some polymeric products in novel drug delivery systems and technologies will be covered. History of polymer science. These identical structures, we understand as a unit made up of two or more molecules, join together to form a long chain. Don't show me this again. It wasn’t until 1920 that German chemist Hermann Staudinger (1881-1965) made his macromolecular hypothesis, suggesting that polymers are actually giant molecules formed by the permanent attachment of countless smaller molecules. Period: Jan 1, 1820 to Feb 1, 1910. History of polymer modified asphalt (PMA) for road pavement 1898 Trial use of rubber asphalt in France. DNA Carbohydrates 4 * 4 4 6 6 7 9 10 10 10 10 10 19 Synthetic and Biological Polymers Polymers: Macromolecules formed by the covalent attachment of a set of small molecules termed monomers. Plastic is a word that originally meant “pliable and easily shaped.” It only recently became a name for a category of materials called polymers. Biodegradable polymers (those derived from plant sources) begin their lifecycle as renewable resources, usually in the form of starch or cellulose. A History and Recent Developments CSIRO MANUFACTURING Graeme Moad MACRO 2016 – Istanbul –17 July 2016. Free Presentations in PowerPoint format. Hardie Polymers have been supplying the Plastic Injection Moulding industry since its inception in1960. Polymers with conjugated π-electron (i. e. system have C=C conjugated bonds) backbones display unusual electronic properties such as low energy optical transition, low ionization potentials, and high electron affinities. An Introduction to Polymers. Thermosets are strong and durable. Find materials for this course in the pages linked along the left. As you would expect, we have amassed a wealth of insights and knowledge regarding the use of polymers within a variety of sectors. The handout , video 5.33, Introduction to Polymer Chemistry Page 4 Classification of polymers: Polymers (synthetic) 1) Thermoplastics (plastics) — linear, some cross -linking can be melted and reformed on heating a) Amorphous — no ordered structure b) Semi -crystalline — compo sed of microscopic crystallites — domains of crystalline structure. Based on “The Development of Bakelite,” a National Historic Chemical Landmark . The presentation cover the following topif with brief description. Free + Easy to edit + Professional + Lots backgrounds. Presentation Summary : Polymers Additives for Polymers Just as metals are alloyed to improve their properties, substances are added to polymers … 7.11 ). Polymers are more commonly referred to as “plastics” since Later, it was considerd in the UK, the NED, the U.S.A. 1945 Trial use of rubber asphalt in UK. In basic terms, a polymer is a long-chain molecule that is composed of a large number of repeating units of identical structure. The In Science and Technology. (Hamburg Conference,10-11th February 2010) Robin Young, Transport Relationship Manager from the Materials KTN attended the recent 2nd International Conference on Polymers in Defence and Aerospace Applications run by Smithers Rapra Technology Ltd in Hamburg. INTRODUCTION:- Self-healing is a synthetic route that attempts to repair the inevitable degradation, damage, and failure that biological tissues are subjected to with faster response times than the natural response of biological systems ( Fig. Introduction: Organic polymers are normally insulators, it can be presumed that conducting polymers must have an unusual structure. Conducting polymers such as polyaniline, polypyrrole, and their derivatives provide the unique electrical properties of metals or semiconductors, as well as attractive properties associated with conventional polymers, such as ease of synthesis and flexibility in processing; therefore, supercapacitor hydrogels are attracting much attention as new power sources . Polymer, any of a class of natural or synthetic substances composed of very large molecules that are multiples of simpler chemical units. The first commercial use of Bakelite was to make gearshift knobs in 1917 for Rolls Royce automobiles. Belgian-born U.S. chemist Leo Hendrik Baekeland ushered in the modern era of composites in 1907 with his creation of Bakelite, one of the first synthetic resins.The resin was extremely brittle, but Baekeland found he could soften and strengthen it by combining it with cellulose. Subject areas: Chemistry, Materials Science, Polymers and History . A History of Polystyrene and Styrofoam This popular packing material can be injected, extruded or blow molded. The sulphur is present due to the amino acid cysteine History of Polymers Timeline created by erin_w. Polymers are classified as: (1) Man-made or synthetic polymers that are synthesized in the laboratory; (2) Biological polymer that are found in nature. The word “Polymer” is derived from two Greek words, ‘Poly’ that means many (numerous) and ‘Mer’ which means units. Polymer Physics Overview Lecture Notes 1 Lecture 1 Dr. Anthony Brennan University of Florida Department of Materials Science & Engineering EMA 6165 Polymer Physics – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 46d2eb-MzA2N Conducting Polymers. Polymers: Macromolecules formed by the covalent attachment of a set of small molecules (more than 50) termed monomers. Man and Materials through History . The cross-linking restricts the motion of the chains and leads to a rigid material.