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Odian Book 2-14 d,e

Odian Book 2-14 d,e. Poly(phenylene sulfide). Linear PPS: T g = 85 ° C T m = 285 ° C M n = ≈ 20,000 g/mol. Poly(phenylene oxide). Thermoplastic Tg = 208 ° C PPS: T g = 85 ° C; T m = 285 ° C Acid / base resistant Poor solvent resistance (toluene soluble)

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Odian Book 2-14 d,e

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  1. Odian Book 2-14 d,e

  2. Poly(phenylene sulfide) • Linear PPS: Tg = 85 °C Tm = 285 °C Mn = ≈ 20,000 g/mol

  3. Poly(phenylene oxide) • Thermoplastic • Tg = 208 °C PPS: Tg = 85 °C; Tm = 285 °C • Acid / base resistant • Poor solvent resistance (toluene soluble) • High strength • Good stiffness • Low CTE • Not melt processable!!! • Sold as a blend with PS (NorylTM by GE Plastics)

  4. Poly(phenylene oxide) • Need to block ortho positions • Branching and x-linking • Usually –CH3

  5. Polyimides • Properties • High strength • Tough • Oxidative stability • Hydrolytic stability • High Tg • High thermal stability

  6. KaptonTM Poly(ether imide) diamine dianhydride polyamic acid Δcyclodehydration Tg > 325 °C Intractable Insoluble

  7. Processable Polyimides diamine dianhydride polyamic acid Applications: Tough unfilled moldings Strong adhesives Composites Δcyclodehydration (Bulk vs solution) Thermoplastic polyimides Melt processable in the 260 – 325 °C range

  8. UltemTM Poly(ether imide) Tg = 217 °C

  9. Ultra High Tg, Processable Polyimides polyamic acid Δcyclodehydration in solution

  10. SiltemTM Polyether Imide Imparts: - Lower surface energy - Hydrophobicity - Oxygen plasma resistance - Increased toughness Mixed diamines dianhydride polyamic acid Siloxane-containing polyimide

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