Organic Polymer Organic Polymer Chemistry Chemistry Outline Outline  Introduction  Classify  Nonmenclature  Properties  Synthesis  Application Introduction Introduction   History History    !" #$%&' Nonmenclature Nonmenclature  ( )*+ ,)-,    Polymers from substituted derivatives of ethylene containing 2 times the original vinyliden name: poly + name substituted vinyliden  . : prefix poly then called   ,xample- polyester, polyamide, polyuret  an  CH 2 C n CH 2 C CN n polyvinyliden clorua polyvinyliden xianua CN Cl Cl Classify Classify Depend on dierent factors  Depend on origin: natural ( rubber, cellulose, prode, …) and synthesis ( nylon, teon,…)  Depend on the composion Carbon chain Odd chain: The chain is formed from carbon and some elements- S,O,N,P Inorganic polymer: Main chain is form by inorganic elements • Homopolymer: Homopolyme as the polymer is formed from a monomer • Copolymer: Copolymers are polymers formed from two or more different monomers.  Depend on the component of the chain Physical Property Physical Property  /        0  1  (-/  [...]... monomer diffuse through the water to the micelle Mechanism Copolymerization  Copolymerization is a polymerization of two or many different monomers  The reaction is useful for improving properties of polymer with usage purpose Copolymerization of SBR Limit: PS is stable with high temp but it is brittle and hardly dye Overcome: Decrease brittle property, we copolymerization Styrene with Butadiene Definition ... Tensile strength measures the forces needed to break a polymer Chemical properties of polymer  Reaction maintain polymer circuit PVA Polivinyl alcol  Reaction cuts polymer circuit  Hydrolysis polyester  Hydrolysis polypeptide or polyamide  Pyrolysis polysterene  Circuit connection reaction  Vulcanization rubber  S S  Bakelide resin Synthesis Polymerization  A reaction in which many monomer... ystalline phase to a solid amorphous phase- melting point, Tm  Depend on Tm, we classify polymers into thermoplastics & thermosetting polymers Thermoplastic  Is a polymer become a liquid when heated and hard when cooled    Can be easily remelted and moulded   Remain many shapes Are high-molecule weight polymer Chains are associated each other by Val der Wall forces, dipole-dipole interation,... Initiators: V59-2,2'-Azodi(2-methylbutyronitrile ) Emulsion polymerization  Latex is the stable dispersion (emulsion) of polymer microparticles in an aqueous medium  Latex is used in coatings and glues because they solidify by coalescence of the polymer particles as the water evaporates, and therefore can form films without releasing potentially toxic organic solvents in the environment Theory  A monomer... length is increased High polymers do not exhibit a boiling point because they decompose before reaching theoretical boiling temperatures Glass transition temperature  The temp at which polymers change from a cry stalline solid to a brittle, glassy amorphous solid- Tg (1)- Crystalline material (2) -Polymer Strength • Critical length needed before strength increases • Hydrocarbon polymers average of 100... reaction  Vulcanization rubber  S S  Bakelide resin Synthesis Polymerization  A reaction in which many monomer units combined into a large molecule nA → –( A )n – Free radical polymerization  A reaction to form polymer from monomers that contain double bond (C=C) Mechanism Initiation R + R 2R  Grow chain R Termination M R  + M  M + R  M  + M   + R + R     M-M  M-R  R-R Synthesis . elements- S,O,N,P Inorganic polymer: Main chain is form by inorganic elements • Homopolymer: Homopolyme as the polymer is formed from a monomer • Copolymer: Copolymers are polymers formed. Organic Polymer Organic Polymer Chemistry Chemistry Outline Outline  Introduction  Classify  Nonmenclature  . Nonmenclature Nonmenclature  ( )*+ ,)-,    Polymers from substituted derivatives of ethylene containing 2 times the original vinyliden name: