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Carbon-13 nuclear magnetic resonance spectra of natural rubber latex

Ang, T. T. and Roberts, J. D. (1979) Carbon-13 nuclear magnetic resonance spectra of natural rubber latex. Plastics and Rubber: Materials and Applications, 4 (3). pp. 138-139. ISSN 0307-9414.

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The ^(13)C relaxation times (T_1)of the carbons in a sample of rubber latex have been measured for the purpose of determining the practicality of measuring the rubber content from the integrated intensities of the FT NMR ^(13)C resonances without need for using gated decoupling or paramagnetic relaxation agents. The carbon T_l values were found to range from 610 ms (tertiary carbon) to 44 ms for the CH_2 attached to the CH_3-C = carbon of the double bond. These relaxation times are short enough to allow for easy quantitative analyses of the rubber content in a latex, provided the FT pulsing rates are not too fast.

Item Type:Article
Additional Information:© 1976 Plastics and Rubber Institute. Paper 1341. First received 7 September 1978 and accepted in final form 19 March 1979. The work was supported by the National Science Foundation and the report on which it was based is Contribution No. 5835.
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Caltech Gates and Crellin Laboratories of Chemistry5835
Issue or Number:3
Record Number:CaltechAUTHORS:20151102-150400442
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61774
Deposited On:04 Nov 2015 16:14
Last Modified:03 Oct 2019 09:11

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