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Issue 17, 2010
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Analysis of non-covalent interactions between the nanoparticulate fillers and the matrix polymer as applied to shape memory performance

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Abstract

Non-covalent interactions between filler particles and polyurethanes were investigated using fluorescence emission spectroscopy. The results were used in the analysis of shape memory (SM) performance of polyurethanes. Composites of shape memory polyurethane (SMPU) and carbon nanofiber (CNF), oxidized carbon nanofiber (ox-CNF), organoclay, silicon carbide, and carbon black were prepared from diphenylmethane diisocyanate, 1,4-butanediol, and poly(caprolactone)diol. It was revealed by fluorescence emission spectroscopy that primarily the urethane groups located in the hard segments of SMPU interacted with the polar functional groups on filler particles. A close correlation between the extent of non-covalent filler–matrix interactions, soft segment crystallinity, and SM properties of polyurethane composites was discussed. It was observed that weak non-covalent interactions of polymer chains with CNF and SiC particles caused significant reductions in soft segment crystallinity of SMPU and hence the shape memory properties of the composites.

Graphical abstract: Analysis of non-covalent interactions between the nanoparticulate fillers and the matrix polymer as applied to shape memory performance

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Publication details

The article was received on 21 Oct 2009, accepted on 19 Dec 2009 and first published on 14 Jan 2010


Article type: Paper
DOI: 10.1039/B922027E
Citation: J. Mater. Chem., 2010,20, 3467-3474
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    Analysis of non-covalent interactions between the nanoparticulate fillers and the matrix polymer as applied to shape memory performance

    I. S. Gunes, C. Pérez-Bolivar, F. Cao, G. A. Jimenez, P. Anzenbacher and S. C. Jana, J. Mater. Chem., 2010, 20, 3467
    DOI: 10.1039/B922027E

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