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Volumn 30, Issue 14, 1997, Pages 4241-4243

Step-growth polymers as macroinitators for "living" radical polymerization: Synthesis of ABA block copolymers

Author keywords

[No Author keywords available]

Indexed keywords

FREE RADICAL POLYMERIZATION; INITIATORS (CHEMICAL); MACROMOLECULES; MOLECULAR WEIGHT DISTRIBUTION; MONOMERS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; POLYACRYLATES; POLYSTYRENES; POLYSULFONES; SIZE EXCLUSION CHROMATOGRAPHY; SYNTHESIS (CHEMICAL); THERMOGRAVIMETRIC ANALYSIS;

EID: 0031190663     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma970358o     Document Type: Article
Times cited : (167)

References (25)
  • 2
    • 0001077006 scopus 로고
    • Eastmond, G. C., Ledwith, A., Russo, S., Sigwalt, P., Eds.; Pergamon Press: Elmsford, NY
    • Schue, F. In Comprehensive Polymer Science; Eastmond, G. C., Ledwith, A., Russo, S., Sigwalt, P., Eds.; Pergamon Press: Elmsford, NY, 1989; Vol. 6, p 359.
    • (1989) Comprehensive Polymer Science , vol.6 , pp. 359
    • Schue, F.1
  • 5
    • 0001478327 scopus 로고
    • Eastmond, G. C., Ledwith, A.; Russo, S., Sigwalt, P., Ed.; Pergamon Press: Elmsford, NY
    • Rempp, P. F.; Lutz, P. J. In Comprehensive Polymer Science; Eastmond, G. C., Ledwith, A.; Russo, S., Sigwalt, P., Ed.; Pergamon Press: Elmsford, NY, 1989, p 403.
    • (1989) Comprehensive Polymer Science , pp. 403
    • Rempp, P.F.1    Lutz, P.J.2
  • 7
    • 0004016167 scopus 로고
    • Mzshra, M. K., Ed.; Polymer Frontiers International: Hopewell Jet, NY
    • Ueda, A.; Nagai, S. In Macromolecular Design: Concept and Practice; Mzshra, M. K., Ed.; Polymer Frontiers International: Hopewell Jet, NY, 1994; p 265.
    • (1994) Macromolecular Design: Concept and Practice , pp. 265
    • Ueda, A.1    Nagai, S.2
  • 8
    • 0041429335 scopus 로고
    • Mishra, M. K., Ed., Polymer Frontiers International: Hopewell Jet, NY
    • Nuyken, O.; Voit, B. In Macromolecular Design: Concept and Practice; Mishra, M. K., Ed., Polymer Frontiers International: Hopewell Jet, NY, 1994; p 313.
    • (1994) Macromolecular Design: Concept and Practice , pp. 313
    • Nuyken, O.1    Voit, B.2
  • 24
    • 85033181225 scopus 로고    scopus 로고
    • note
    • Synthesis of Polysulfone: In a 300 mL, three-neck flask with a Dean-Stark trap and condenser, bisphenol A (5.36 g, 23.5 mmol) and bis(4-fluorophenyl) sulfone (5.0 g, 19.9 mmol) were dissolved in a solution of N,N-dimethylacetamide (60 mL) and toluene (40mL). Potassium bicarbonate (8.13 g, 58.8 mmol) was then added. The reaction was stirred at 140 °C for 3.5 h. The reaction was then heated to 170 °C for 12 h. Water was collected in the Dean-Stark trap as an azeotropic mixture with toluene. The reaction was that cooled and precipitated into water/methanol (50: 50). The resulting polymer was reprecipitated from THF into water/methanol (2×) and then dried. Mass: 7.5 g. Yield: 79 %.
  • 25
    • 85033160920 scopus 로고    scopus 로고
    • note
    • Synthesis of Copolymers: To a 10 mL round-bottom flask with magnetic stir bar was added the macroinitiator (1.0 g, 0.25 mmol) dNBipy (202.4 mg, 0.5 mmol), CoBr (36.1 mg, 0.25 mmol), and 1,4-dimethoxybenzene (1.0 g). The flask was sealed with a rubber septum and the contents degassed by applying a vacuum and backfilling with argon (3×). Degassed monomer (Sty, 2.8 mL, 24.8 mmol; BA, 3.6 mL, 24.8 mmol) was then added via syringe. The reaction mixture was heated in a thermostated oil bath (110 °C) while stirring. After 6.75 h, the reaction was cooled and purified by repeated precipitation from THF into MeOH/brine.


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