Publication Abstracts

Seland et al. 2001

Seland, J.G., M. Ottaviani, and B. Hasfkjold, 2001: A PFG-NMR study of restricted diffusion in heterogeneous polymer particles. J. Colloid Interface Sci., 239, 168-177, doi:10.1006/jcis.2001.7546.

The diffusion resistance to monomers during heterogeneous polymerization of polyolefin particles may have a significant effect on the observed activity. This diffusivity is, in general, unknown. To gain more information on this diffusion resistance in such systems, PFG-NMR has been used to measure the diffusion of organic solvents in various systems of porous polymer particles. In such systems the complex morphology and geometry demands careful analysis of the PFG-NMR attenuation curve. In this study, effects from restricted diffusion, domains having different diffusivity, and internal magnetic field gradients are expected. Thus, the obtained diffusivities have to be considered carefully, and a way to analyze the data taking these effects into account is presented.

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BibTeX Citation

@article{se08100v,
  author={Seland, J. G. and Ottaviani, M. and Hasfkjold, B.},
  title={A PFG-NMR study of restricted diffusion in heterogeneous polymer particles},
  year={2001},
  journal={J. Colloid Interface Sci.},
  volume={239},
  pages={168--177},
  doi={10.1006/jcis.2001.7546},
}

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RIS Citation

TY  - JOUR
ID  - se08100v
AU  - Seland, J. G.
AU  - Ottaviani, M.
AU  - Hasfkjold, B.
PY  - 2001
TI  - A PFG-NMR study of restricted diffusion in heterogeneous polymer particles
JA  - J. Colloid Interface Sci.
VL  - 239
SP  - 168
EP  - 177
DO  - 10.1006/jcis.2001.7546
ER  -

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