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Download e-book for kindle: Handbook of RAFT polymerization by Christopher Barner-Kowollik

By Christopher Barner-Kowollik

ISBN-10: 3527319247

ISBN-13: 9783527319244

Spanning the whole box from basics to functions in fabric technological know-how, this one-stop resource is the 1st complete reference for polymer, actual and floor chemists, fabrics scientists, chemical engineers, and people chemists operating in undefined.

From the contents:

  • Introduction: residing loose Radical Polymerization and the RAFT method
  • Fundamental Structure-Reactivity Correlations Governing the RAFT strategy
  • Mechanism and Kinetics
  • The RAFT approach as a Kinetic software
  • Theory and perform in Technical functions
  • RAFT Polymerization in Bulk and natural Solvents, in addition to Homogeneous Aqueous structures
  • Emulsion and Mini-Emulsion Polymerization
  • Complex structure layout
  • Macromolecular layout through the Interchange of Xanthates
  • Surface amendment
  • Stability and actual homes of RAFT Polymers
  • Novel fabrics: From Drug supply to Opto-Electronics
  • Outlook and destiny advancements

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Extra info for Handbook of RAFT polymerization

Example text

As a result, altered chain-transfer efficiencies arise that would not have been predicted on the basis of R• stabilities alone. Moreover, the homoanomeric interaction is further modulated by the nature of Z: for example, a fluorine substituent in the Z position can inhibit the effect of a π-acceptor-containing R group [24]. This example, and the vinyl acetate example given above, emphasizes the importance of conducting specific computational or experimental investigations once one has selected a range of candidate RAFT agents for a particular application.

Thus from Fig. 2, it is seen that the equilibrium constant increases by a factor of 73 when the first styryl unit is inserted, increases by a further factor of 672 when the second unit is inserted, but increases by less than a factor of 4 when the third unit is inserted. 1 × 1010 K The original data reported in Ref. [78] was recalculated at the W1-ONIOM//B3-LYP/6-31G(d) level of theory in conjunction with the harmonic oscillator approximation and taken from Ref. [42]. 00E+00 0 1 2 3 4 n Fig. 15 K for the addition of (NC)C(CH3 )2 (CH2 CHPh)n • to S C(Ph)SCH3 (o) and addition of CH3 • to S C(Ph)S (CH(Ph)CH2 )n C(CH3 )2 CN (•) [42].

C02 December 15, 2007 11:55 Char Count= 26 2 Quantum-Chemical Studies of RAFT Polymerization end, work is currently underway to identify cost-effective multireference methods for studying such systems. Another side reaction that is worth considering is the attack of the propagating radical at the carbon center (rather than the sulfur center) of the C S bond to produce a sulfur-centered radical. Studies of radical addition to simple thiocarbonyl compounds indicate that this side reaction is actually thermodynamically preferred, though it is kinetically less favorable by 1–2 orders of magnitude [8, 100].

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Handbook of RAFT polymerization by Christopher Barner-Kowollik


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