SET‐LRP of vinyl chloride initiated with CHBr3 in DMSO at 25 °C |
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Authors: | Monika J Sienkowska Brad M Rosen Virgil Percec |
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Institution: | Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104‐6323 |
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Abstract: | The development of Cu(0)/TREN/CuBr2‐catalyzed SET‐LRP of VC initiated with CHBr3 in DMSO at 25 °C is reported. The use of CuBr2 additive allows for the first LRP of low molecular weight VC (target DP = 100), as well as lower Cu powder loading levels, improved Ieff and control in the synthesis of higher molecular VC, targeted degree of polymerization = 350, 700, 1,000, 1,400. 1H NMR and HSQC confirm the bifunctionality of CHBr3 as an initiator and suggest that deleterious side‐reactions such as the formation of allylic chlorides occur primarily at the onset of the reaction. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 4130–4140, 2009 |
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Keywords: | bifunctional initiator poly(vinyl chloride) (PVC) SET‐LRP telechelics VC |
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