EMA6165-lect-05 - ‘33. Condensation Polymers . Nylon 6,6...

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Unformatted text preview: ‘33. Condensation Polymers . Nylon 6,6 — A-A Monomer: adipic acid — B-B Monomer: 1,6 hexane diamine — A Monomer: End group — B Monomer: H 0 H2 H2 H2 I Hip C C C N + H C—CH O—H \N/ \C/ xC/ \C/ \H 2/ 2 H, J4 H2 H2 H2 / H20 __ >=o (’y _‘g, HCH ,JQTO O “DH/QH¢bN a k ‘2’)‘4 Hp \H o s: 83(1'Mojfwtra\ M H o .. H: H: I H: H;- I c c c N C c C N/ \C/ \C/ \C/ \C/ \C/ \0/ H2 H2 H2 I H-. H... H o n EMA 6165 Polymer Physics —AB Brennan 312003 37 $3). Condensation Polymers . Nylon 6,6 — A-A Monomer: adipic acid — B-B Monomer: 1,6 hexane diamine — A Monomer: End group . O — B Monomer. H H 22 22 22 N Hip + H C—CH O—H \N/ \C/ xC/ \C/ \H 2/ 2 I H2 H2 H2 H20 H >= 0 0\ -H_~O H H o H;- H; H; I H2 H2 I c c c N C c c N/ \C/ \C/ \0 x0/ \0/ \C/ H2 H2 H2 H H-. H... H 0 ll EMA 6165 Polymer Physics —AB Brennan 312003 37 Condensation Polymers - Kevlar — A-A Monomer: ' terephthalic acid — B-B Monomer: - p-phenylene diamine — A Monomer: 0 End group - Nomex - A-A Monomer: - isophthalic acid EMA 6165 Polymer Physics — AB Brennan 312003 39 ° Nylon6 6 — A-A Monomer: caprolactam . QTT5+aH{%a:Ho~/\ — A Monomer: — B Monomer: Addition Polymerization ‘1' Pmimlmail PM wfim-ZMJ'. I Y+| —u- ©90W Indm’l'lon EMA 6165 Polymer Physics — AB Brennan 812008 42 Addition Polymers Enginéémg - polyethylene (PE, - polybutadiene HDPE, LDPE, . po|yisoprene LLPE) o polybutene * Polystyrene - polyvinylchloride ' pOIVPropy'ene - polytetrafluoroethy ° polyacrylamide lene (Teflon) ° polyacrylate, - polyethylene-co- polyacrylic acid, propylene-co- polymethyl butadiene (EPDM) methacrylate EMA 6165 Polymer Physics —AB B nnnn an 312003 43 K35 Polymerization Processes - Solution - Bulk WW” POW - Emulsion EM - Suspension - Interfacial - Supercritical EMA 6165 Polymer Physics —AB B nnnn an 3:2003 44 Stress — Strain Response gee-1x naming Watt“ WW - A: Modulus-chain gitlcp it Q entanglements, bond rotation / - B: Yielding-chain disentanglement, r volume expansion/ - C: Strain Hardening- chain viscous motion, ___...——— chain alignment @ D: Faillireihain bond breakage, reduction in Strain molar mass Stress (A. U.) EMA 6165 Polymer Physics — AB Brennan 4 Stress (A.U.) Stress - Strain Response Ewe—s naming A " o A: High frequency (1 << t). (m w w 5 Low temperature (T<<Tg,Tm), high crystallinity B: Decreasing frequency,('c ~t) (T~Tg, T<Tm) C: Decreasing frequency (1 >t), decreasing crystallinity, (T>Tg, T<Tm) D: Low frequency (1 >>t), high temperature (T>>Tg, T~Tm), low crystallinity Strain EMA 6165 Polymer Physics — AB Brennan Stress Strain Behavior - Comparison rp fife-H‘nnks L- C” 5‘ Engihéénhé‘z High density polyethyien‘ ‘I II.’” ‘0 n+4 _ ‘ 7 0- _ : E _ 6A? 0 asticizedol in lchloride yield Tenszle 0 20 40 200 400 600 800 1000 Etongauon we) I Figure 2.3 Tensile stress-strain curves for several materials Adapted from Polymer Processing. TA Osswald. Hanser. 1998. _ EMA 6165 Polymer PhySICS — AB Brennan 6 ...
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EMA6165-lect-05 - ‘33. Condensation Polymers . Nylon 6,6...

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