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ORANGE EKSTRAKLASA
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 Wysłany: Sob 2:37, 01 Sty 2011 |
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Synthesis of medium-molecular weight polymerization of polyacrylonitrile
Studies facilitate the promotion of industrialization. Table 3 Several conventional aqueous precipitation polymerization of monomers f Comparison of relative molecular mass of hair system / 1 × 104 Note: Sss styrene sulfonate; SAS alkyl sulfonate; AS is a generation of allyl sodium. 3 Conclusion a NaC103/Na = S2Os oxide to a reduction; I made system,[link widoczny dla zalogowanych], control 0.1% oxidant, oxidant / reductant ratio of 1:3,[link widoczny dla zalogowanych], the total monomer concentration of 2O%, at about 6O ℃ reaction temperature 2h,[link widoczny dla zalogowanych], AN and ITA copolymer for water-phase precipitation can be obtained with molecular weight 1.5 × 10 '~ 2.0X105 polymers. b. Increase the total amount of monomer concentration and initiator can significantly improve the overall monomer conversion, but the molecular weight decreases. MAS can increase the AN-MA copolymer system, the polymerization conversion rate. However,[link widoczny dla zalogowanych], little effect on the relative molecular mass.
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