PPT-Introduction to Polymers

Polymers are long molecules made of repeating units called monomers In general Specific example Forces between polymer chains Crosslinks Weak Intermolecular force crosslinks Strong Colvalent. These polymers bring a signi64257cant contribution to the sustainable development in view of the wider range of disposal options with minor environmental impact As a result the market of these environmentally friendly materials is in rapid expansion Introduction Degradable polymers have recently become highly attractive materials in solving the increasingly seri ous environmental problems due to plastic waste Current massproduced petroleumbased polymers are 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 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.. Kyle Douglas, James Farber, Steven Flynn, Janie Gu, . Vivian Qin, Jenny Shih, Jake . Silberg. , Anita . Wamakima. Through Polymer Matrices. Dr. David Cincotta, Jeremy Tang. Controlled Release. Normally 1. 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.. Polythiophene. for ‘Green. ’ . Organic Electronics. Tapping mode AFM (1 . m. m × 1 . m. m x 2 nm) height image showing the . nanofibrillar. morphology of a . polythiophene. -derivative conducting polymer film processed and annealed from water . What is petroleum?. Also known as crude oil. It is a thick black sludge. It comes from ancient plant and animal life long since buried and kept under extreme pressure for millions of years.. It is composed of countless different organic compounds.. 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.. Formulation and Evaluation of Isoniazid Mucoadhesive, nanospheres embedded micro particulates inhalable dry power. Gnanaprakash. . Ph.D. Associate Professor. Department of Pharmaceutics. P. Rami Reddy Memorial College of Pharmacy, India. 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.. 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. 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?. 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-.