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  • Radical Graft Polymerization of an Allyl Monomer onto Hydrophilic Polymers and Their Antibacterial Nanofibrous Membranes
  • 来源:王栋教授个人网站 2015-03-23
  • Hydrophilic poly (vinyl alcohol-co-ethylene) (PVA-co-PE) copolymers
    with 27 mol %, 32 mol % and 44 mol % ethylene were functionalized by
    melt radical graft copolymerization with 2,4-diamino-6-diallylamino-1,3,5-triazine
    (NDAM) using reactive extrusion. This functionalization imparts antibacterial
    properties. The covalent attachments of the NDAMas side chains onto
    the PVA-co-PE polymer backbones were confirmed. The effects of initiator
    concentrations and ethylene contents in PVA-co-PE polymers on grafting of
    NDAM were studied. The chain scissions of PVA-co-PE polymers during
    reactive extrusion were investigated by monitoring changes in the melt torque
    and FTIR spectra. The NDAM grafted PVA-co-PE polymers were successfully fabricated into hydrophilic nanofibers and
    nanofibrous membranes with sufficient surface exposure of the grafted NDAM. The hydrophilicity of the PVA-co-PE polymers
    and the large specific surface area offered by the nanofiber membranes significantly facilitated the chlorine activation process,
    enhanced the active chlorine contents of the grafted PVA-co-PE nanofiber membranes, and therefore led to their superior
    antibacterial properties.
  • [来源:中国聚合物网]
  • 了解更多请进入: 王栋教授个人网站
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