Polymers for information storage systems. II. Polymerization kinetics for preparation of highly crosslinked polydimethacrylates

Authors

  • Christopher N. Bowman,

    1. School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907
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  • Nikolaos A. Peppas

    Corresponding author
    1. School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907
    • School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907
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Abstract

Polymers of ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, and tetraethylene glycol dimethacrylate were prepared by photoinitiated polymerizations in the presence of 2,2-dimethoxy-2-phenyl-acetophenone at 27°C. The reactions led to highly crosslinked polymeric networks. The volume shrinkage observed during polymerization was a function of the number of ethylene glycol units in the dimethacrylate monomer. The kinetic rate constants of polymerization, as determined from the photopolymerization characteristics using a dilatometric technique, were again dependent on the number of ethylene glycol units in the monomer. The importance of these results on the crosslinked structure of the prepared networks is discussed.

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