DOI: 10.1063/1.1698797. The Proton Magnetic Resonance in Natural Rubber

The Proton Magnetic Resonance in Natural Rubber

10.1063/1.1698797

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The proton magnetic resonance has been observed in natural rubber from liquid nitrogen temperature to room temperature. The absorption line widths show two regions of change. With rising temperature, the first change in width starts at about 155°K, and we assign it to the onset of CH3 group rotation. The second, larger change to a narrow line, starts at about 225°K and is assigned to the onset of segmental motions. The latter change coincides with the second-order transitions observed in various physical properties and provides a direct confirmation of the cause of the transition. Samples cured 30, 60, and 90 minutes were investigated, and it was found that curing has a larger effect on the line width changes at lower temperature than at higher temperature. The inferred greater effect of curing upon CH3 group motions than upon segmental motions suggests that cross linking is not the primary mechanism of vulcanization. Rubber stretched 70 percent was found to have the same resonance absorption as unstretched samples.

Bibliography

Gutowsky, H. S., & Meyer, L. H. (1953). The Proton Magnetic Resonance in Natural Rubber. The Journal of Chemical Physics, 21(12), 2122â2126.

Authors 2

H. S. Gutowsky (first)
L. H. Meyer (additional)

References 20 Referenced 67

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10.1103/PhysRev.75.398 / Phys. Rev. (1949)
{'key': '2024020815143087200_r5', 'first-page': '1303', 'volume': '18', 'year': '1950', 'journal-title': 'J. Chem. Phys.'} / J. Chem. Phys. (1950)
10.1063/1.1770810 / Rev. Sci. Instr. (1953)
{'key': '2024020815143087200_r7'}
10.1063/1.1747580 / J. Chem. Phys. (1950)
10.1063/1.1698646 / J. Chem. Phys. (1953)
10.1103/PhysRev.74.1168 / Phys. Rev. (1948)
10.1063/1.1747097 / J. Chem. Phys. (1949)
{'key': '2024020815143087200_r12', 'first-page': '1', 'volume': '2', 'year': '1946', 'journal-title': 'Advances in Colloid Sci.'} / Advances in Colloid Sci. (1946)
{'key': '2024020815143087200_r13', 'first-page': '361', 'volume': 'B45', 'year': '1940', 'journal-title': 'Z. Physik. Chem.'} / Z. Physik. Chem. (1940)
{'key': '2024020815143087200_r14'}
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{'key': '2024020815143087200_r20', 'first-page': '1877', 'volume': '234', 'year': '1952', 'journal-title': 'Compt. Rend.'} / Compt. Rend. (1952)

Dates

Type	When
Created	20 years, 8 months ago (Jan. 5, 2005, 7:34 p.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 11:29 a.m.)
Indexed	1 year, 6 months ago (Feb. 8, 2024, 7:04 p.m.)
Issued	71 years, 9 months ago (Dec. 1, 1953)
Published	71 years, 9 months ago (Dec. 1, 1953)
Published Print	71 years, 9 months ago (Dec. 1, 1953)

Funders 0

None

BibTeX

@article{Gutowsky_1953, title={The Proton Magnetic Resonance in Natural Rubber}, volume={21}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1698797}, DOI={10.1063/1.1698797}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Gutowsky, H. S. and Meyer, L. H.}, year={1953}, month=dec, pages={2122–2126} }

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