PPT-POLYMERS Presented by Dr.

MP KESAVAN MSc PhD 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 manmade synthetic polymers. Many people think of polymers simply as plastics used for packaging in household objects and for making fibres but this is just the tip of the iceberg Polymers are used in all sorts of applications you might not have thought much about before for ex e they possess no mobile charges and the lowest electronic excita tions are in the UV region There exists a peculiar class of polymers with quite di64256erent properties these are polymers with conjugated double bonds in the main chain They are semic performance polymers to improve the impact strength and aesthetic appearance of its polypropylene (PP) injection molded paint pails. Vistamaxx polymers also deliver better processability and cost per By. HEAD OF DEPARTMENT. Dr. Rashid Hassan. Assistant professor. R.I.H.S. ISLAMABAD. 1. DENTURE BASE MATERIALS. Denture base materials can be divided into two types.. 1. METALLIC DENTURE BASE:. Gold alloys, cobalt chromium alloys.. Polymers. . C.X.C objectives. Students should be able to :. Define polymers. Distinguish between addition and condensation as reactions in the formation of polymers. Name examples of polymers formed by:. C1.5. What do I need to know?. Recall. how hydrocarbons can be cracked to make smaller more useful molecules.. Describe. some of the properties of alkenes. Explain. how alkenes can be used to synthesise polymers for a wide range of different applications.. 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.. . Polymers. are large molecules made up of repeating units called . Monomers. The synthetic process is. Polymerization.. E.g. . Note – define repeating unit in terms of monomer structure. Degree of Polymerization. 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.. Biomaterials: Chemistry and Degradation. Jan 2014 – May 2014. Final Year Bachelor of Chemical Engineering. Dr. Ratnesh Jain. UGC Assistant Professor. Page . 2. . 1) B. . Ratner. , A. Hoffman, F. Schoen, and J. Lemons: . and . MER. means . repeating unit. .. Polymers. are macromolecules formed by joining of repeating structural units on a large scale.. The repeating structural units are called . Monomers. .. Polymerisation. Overview. What are . polymers. ?. How are polymers named?. What is a polymer . crosslinker. ?. Polymers are all around us!. Contact lenses. Sport equipment. Clothing. polyester. Plastic. containers. Synthetic. 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?. Phenomenon:. . experiment by pouring the gel. Have you ever seen anything that acts like this gel?. What is happening to the molecules to make it act this way?. Show the beads in the jar and how they will keep falling out after you start them..