Abstract
AbstractPhotoreactive particle was prepared by graft copolymerization of 1,9‐nonandioldimethacrylate (NDMA) onto deproteinized natural rubber (DPNR) particles in latex stage. First, NDMA was mixed with α‐cyclodextrin (α‐CD) as a coupling agent to form an inclusion complex to stabilize a carbon–carbon double bond of NDMA as a bifunctional monomer. Second, the inclusion complex was graft‐copolymerized onto natural rubber (NR) in latex stage with potassium persulfate (KPS) as an initiator, after deproteinization with urea in the presence of surfactant. A terminal vinyl group of NDMA was used for the graft copolymerization, while the other remained in the resulting polymer, due to the coupling effect of the α‐CD. The products, after washing α‐CD out, were characterized by FTIR, X‐ray diffraction (XRD), 1H NMR and solid‐state 13C NMR measurements. The amount of residual carbon–carbon double bond after graft copolymerization was investigated in relation to the amount of rubber and reaction temperature. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 4111–4118, 2009
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