Development of NMR Imaging Probes for Advanced Ceramics

Gopalsami, N.; Forster, G. A.; Dieckman, S.L.; Ellingson, W. A.; Botto, Robert E.

doi:10.1007/978-1-4684-5772-8_109

Cited by 4 publications

(2 citation statements)

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“…High-resolution NMR spectrometry of an MAA-MBAA copolymer mix was performed on a Bruker AM-300 spectrometer with a commercial probe at a magnetic field strength of 7.1 T. Low-resolution NMR spectroscopy and imaging studies were conducted on a Tecmag NMR Kit II and Libra data acquisition system interacting with a CXP-100 spectrometer and a Macintosh Quadra 950 computer. Spectra and images at a magnetic field strength of 2.35 T were obtained by an inhouse-built imaging accessory 15 tuned to the proton resonance frequency of 100.13 MHz. Orthogonal linear magnetic field gradients across the specimen were driven by three 1000-W Techron audio amplifiers.…”

Section: Experimental Aspectsmentioning

confidence: 99%

H NMR Imaging and Spectroscopy Studies of the Polymerization of Acrylamide Gels

et al. 1996

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1H nuclear magnetic resonance spectra and images have been acquired during polymerization of a mixture of soluble reactive methacrylamide (monomer) and N,N‘-methylenebisacrylamide (cross-linking molecule). The mixture was polymerized by adding ammonium persulfate (initiator) and tetramethylethylenediamine (accelerator) to form long-chain, cross-linked polymers. Study of the time-varying spin−lattice relaxation times (T 1) during the polymerization was conducted at 25 and 35 °C and the variation of spectra and T 1 with respect to the extent of polymerization was determined. To verify homogeneous polymerization, multidimensional 1H NMR imaging was utilized for in-situ monitoring of the process. The intensities from the images are modeled and the correspondence shows a direct extraction of T 1 data from the images.

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Section: Experimental Aspectsmentioning

confidence: 99%

H NMR Imaging and Spectroscopy Studies of the Polymerization of Acrylamide Gels

et al. 1996

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“…This is mainly because of the inherently broad spectral 1inewidths and other complexities involved in imaging solid materials. Argonne National Laboratory has recently developed a solid-state MRI system for characterizing ceramic and polymeric materials [6]. It includes a special imaging probe capable of providing high gradient strengths (>50 G/cm).…”

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confidence: 99%