PPT-Types of Polymers and reactions

Formations and linkages What are polymers Alkene molecules have the ability to add onto one another and produce large molecules these are polymers Therefore what are monomers The process of these large molecules forming is termed addition polymerisation. What. . is. a . polymer. ?. Important. . polymers. Plastics. Rubbers. . Proteins. Starch. Cellulose. Lignin. Fats. PAHs. Polymers from alkenes. Addition reactions . Polymerisation. .. Other important monomers. AND . POLYMERIZATION. By. Dr Rashid Hassan. Assistant Professor. RIHS. ISLAMABAD. 1. POLYMER. Poly = Many mer = Units. I.e. a material made up of many units.. Properly defined as:. Chemical compound composed of large organic molecules formed by the union of many repeating small monomer units.. . Polymerization . can proceed according to two different mechanisms, referred to as chain-growth and step-growth polymerization. . S. tep. -growth polymerization. Step-growth polymers, also called condensation . Alkenes. The commercial . process. of . hydrogenation is . used. to . convert the double . bonds. in . vegetable oils to . saturated. fats . such as those in margarine. . Learning . Goal . . Draw the condensed or line-angle structural formulas and give the names for the organic products of addition reactions of alkenes. Draw a condensed structural formula for a section of a polymer.. Bellwork. : Please turn in your Meal Breakdown sheets and posters to table 7 marked with your class period. . On the sheet of paper you picked up:. Title: Quiz 2. Name. Period. Date. Number it 1-10. Science Fact of the Day:. What are polymers. ?. Where can you find polymers in your everyday life?. How are polymers synthesized?. What kinds of polymers can be recycled?. How are polymers recycled?. What are some unique applications for polymers?. Can you spot three (3) differences?. Can you spot the differences in the reactions?. (1) 2Mg. (s. ) . O. 2(g) . → . 2MgO. (s. ) . (2). CaCO. 3(s) . →. . CaO. (s) . CO. 2(g). (3) . NaOH. (. CONTENTS. CHEMICAL REACTION. CHARACTERISTICS OF CHEMICAL REACTION. TYPES OF CHEMICAL EQUATION. BALANCING OF CHEMICAL EQUATION. HOW TO MAKE EQUATION MORE INFORMATIVE. Sansare. Assistant Professor . A . crisis.  (from the Greek . κρίσις. - . krisis. ; plural: ". crises. "; adjectival form: "critical") is any event that is going (or is expected) to lead to an unstable and dangerous situation affecting an individual, group, community, or whole society.. In order for chemical reactions to take place, . enzymes . must be present to help . speed up . the reaction.. Chemical bonds connect atoms. to make . molecules. .. Chemical . reactions. can do two things:. Noah Brubaker. June 29. th. , 2011. Hydrocarbons. ex: Alkanes. 1 – Meth-. 2 – Eth-. 3 – Prop-. 4 – But-. 5 . – . Pent-. 6 – Hex-. 7 – . Hept. -. 8. . – Oct-. 9. . – Non-. 10 – Dec-. M.P. KESAVAN M.Sc., Ph.D.,. Assistant Professor. Department of Chemistry. HKRH College. Uthamapalayam. .. 1. Polymers ???. 2. Polymers . may be naturally found in plants and animals (natural polymers) or may be man-made (synthetic polymers).. → . the . synthesis of new polymers by modification of existing . polymers using . a variety of chemical . reactions. 1) . the esterification of cellulose, crosslinking of . polyisoprene. , hydrolysis. Synthesis Reaction. – combines two or more simpler reactants to form new, more complex products. .. N. N. O. O. O. O. N. 2. +. 2O. 2. 2NO. 2. +. Nitrogen. Oxygen. Nitrogen Dioxide. Simple to complex.