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Synthesis, characterization and photopolymerization of vinyl ether and acrylate functionalized hybrid oligo-caprolactone

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Abstract

Linear vinyl ether-(oligo-caprolactone)-acrylate (VPCLA), combining fast free radical and complete cationic photopolymerizable groups, was synthesized, functionalized, and photopolymerized to produce polycaprolactone (PCL) network. Fourier Transform Infrared (FTIR) spectra confirmed that the C = C peaks from both vinyl ether and acrylate end groups were consumed after photopolymerization. Kinetics parameters obtained from differential scanning photo-calorimetry (DPC) analysis showed that photopolymerization of VPCLA at early stage was accelerated as the time needed to reach peak maximum was shortened, and the induction time was significantly shortened compared to monofunctional vinyl ether-(oligo-caprolactone) (VPCL). The activation energy (Ea) was calculated to be 14 kJ/mol, assuming second-order autocatalytic model was followed. Rate of polymerization of the hybrid oligomers was doubled in dual photoinitiators system, which contained both cationic and radical photoinitiators. Furthermore, the conversion was greatly improved at the presence of divinyl ether/hydroxybutyl vinyl ether in 1:1 ratio.

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Acknowledgement

Financial support from Nanyang Research Scholarship is gratefully acknowledged.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Nanyang Technological University, 50, Nanyang Avenue, Singapore, 639798, Singapore

    S. S. Liow, V. T. Lipik, L. K. Widjaja & M. J. M. Abadie

  2. Laboratory of Polymer Science and Advanced Organic Materials, LEMP/MAO, Université Montpellier 2, Place Bataillon, 34095, Montpellier, Cedex 05, France

    M. J. M. Abadie

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  1. S. S. Liow
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  2. V. T. Lipik
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  3. L. K. Widjaja
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  4. M. J. M. Abadie
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Correspondence to S. S. Liow.

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Liow, S.S., Lipik, V.T., Widjaja, L.K. et al. Synthesis, characterization and photopolymerization of vinyl ether and acrylate functionalized hybrid oligo-caprolactone. J Polym Res 19, 9748 (2012). https://doi.org/10.1007/s10965-011-9748-6

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  • DOI: https://doi.org/10.1007/s10965-011-9748-6

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