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Messungen der magnetischen Relaxationszeiten der Protonen in nativen Stärken mit verschiedenen Wassergehalten
Author(s) -
Hennig H. J.,
Lechert H.
Publication year - 1974
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19740260705
Subject(s) - relaxation (psychology) , magnetic relaxation , chemistry , condensation , residence time (fluid dynamics) , physics , thermodynamics , magnetization , magnetic field , psychology , social psychology , quantum mechanics , geotechnical engineering , engineering
Measurements of the magnetic relaxation times of the protons in native starches with different water contents. The magnetic relaxation times T 1 and T 2 of the protons of some samples of native starches have been studied to get an idea of the mobility of the water molecules being adsorbed or connected to the starch by capillary condensation. The measurement of T 2 in all starches shows two ranges of mobility above water contents of about 15%. The residence probability in the two ranges of different mobility could be estimated. The longitudinal relaxation time T 1 showed uniform behaviour. The results are in correspondence with the results of other methods of investigation.