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    Photopolymerization of thiol-alkynes: Polysulfide networks

    Access Status
    Fulltext not available
    Authors
    Chan, J.
    Zhou, H.
    Hoyle, C.
    Lowe, Andrew
    Date
    2009
    Type
    Journal Article
    
    Metadata
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    Citation
    Chan, J. and Zhou, H. and Hoyle, C. and Lowe, A. 2009. Photopolymerization of thiol-alkynes: Polysulfide networks. ZzChemical Materials. 21 (8): pp. 1579-1585.
    Source Title
    ZzChemical Materials
    DOI
    10.1021/cm803262p
    ISSN
    0897-4756
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/29554
    Collection
    • Curtin Research Publications
    Abstract

    A series of photoinitiated reactions involving radical chain addition of dithiols across the triple bonds of dialkynes results in quantitative loss of all of the thiol and alkyne groups in 1:1 molar functional group neat mixtures. The reactions proceed rapidly to give uniform networks with relatively narrow differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) glass transition ranges. The glass transitions of the network films are directly related to the network structure and range from below 0 C° to about 40 C° as determined by DMA. The thiol-alkyne based hydrocarbon networks with sulfide linking groups have refractive index values which extend as high as 1.66. There is a linear relationship between the density and the refractive index, both of which increase linearly with weight percent sulfur. © 2009 American Chemical Society.

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