STRUCTURE 25 Part Polymer Name Monomer Structure(s) J Polytetra- F2C=CF2 fluoroethylene Tetrafluoroethylene (Teflon TFE) K Poly(phenylene oxide)(PPO) (Hint:polymerized HO in presence of O2) CH3 2.6-Dimethyl phenol L Polypropylene H H,C=C CH3 M Acetal (polyfor- Propylene maldehyde or H-C-H CH2 polyoxy- 0 or methylene) Formaldehyde (Celcon, Trioxane Delrin) N Polycarbonate CLC-CI (Calibre,Lexan, OH Makrolon) Phosgene Bisphenol-A O Epoxy or phenoxy HH HO OH HC C-C CI CH Bisphenol-A Epichlorohydrin P Poly(dimethyl CH3 siloxane) CI-Si-CI (silicone rubber) CH3 (Hint:polymerized Dimethyl dichlorosilane in presence of H2O) Q Polyurethane HOROH O=C=N-R'-N=C=0 Diol or glycol Diisocyanate R Polyimide H2NR NH2 Diamine Dianhydride S Polysulfone
on (see Table 2.2). E 2.2 Solution to Example 2.4 Polymerization Structure Leaving Polymer Name Polymer Structure Type Type Group Com olystyrene Addition Linear None olyethylene H Addition Linear or None branched from side reactions oly(butylene Condensation Linear H20 crephthalate)(PBT) H-O(CH20-C oly(ethylene Condensation Linear CHOH Can also b rephthalate)(PET) the diacid Dacron,Mylar) splitting o ylon 6/6 -..C.e.O Condensation Linear H20 Characteri linkage ci ylon 6 Condensation Linear None Amide in splits CH>
lyptal Condensation Branched or None Structure HO 01 cross-linked ratio of re usually hig linked see oly(diallyI H Addition Cross-linked None Monomer hthalate) functional two doubl 0 CH2 [elamine Condensation Cross-linked H2O Similar str rmaldehyde result whe Melmac,Formica) formaldeh OH condensec (NH2)2CO H-N H phenol,,Φ- H etc
E 2.2 (Continued) Polymerization Structure Leaving Polymer Name Polymer Structure Type Type Group Com olytetrafluoro- Addition Linear None thylene Teflon TFE) oly(phenylene CH Condensation Linear H20 Oxidative xide) mechanisr CH: olypropylene HH Addition Linear None CH; cetal (celcon, H Addition Linear None Only othe elrin) bond that H addition p olycarbonate Condensation Linear HCI (if Characteri Calibre,Lexan. lakrolon) o-cl.ci alcohol carbonate and acid, will split 0-C-0 out H2O) poxy or phenoxy HHH Condensation Linear HCI For x<8, and epoxide epoxy,if 8 ring scission solid epox x≈100.a plastic
Condensation Linear HCI Will get si HH with no bi -OH+HGC-C CI+HO---0C-C-C-O-+HCI can be cre with diam HH白 anhydride -OH tern oly(dimethyl CH3 Condensation Linear HCI Commerc loxane)(silicone Si-0 contain so bber) functional CH3 linking ag acetate gre substi-tute for Cl olyurethane Condensation Linear None Characteri O H HO (the C=N urethane li O-R(O-C-N-R'-N-CH group circled.R opens) vary wide olyimide Condensation Linear!(not H20 The chara network!) imide link Both amine circled H's react with anhydride,so it has only a functionality of 2 olysulfone w回O回}@ Condensation Linear NaCl