ISSN:
0022-3832
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
A comparison of the temperature dependence of the nuclear resonance line-width and second moment for dried chip and rod samples of nylon 66 and 610, as measured by several authors, reveals discrepancies within the range 80 to 400°K. Room temperature measurements with a Pound-Watkins spectrometer suggest that neither linewidth nor second moment varies greatly with radiofrequency field, although saturation may occur at low temperatures. It is concluded that the nuclear resonance differences reflect sample differences, at least for the higher temperatures. Evidence is considered for the decomposition of the continuous nuclear resonance changes in polyamides into more discrete “transitions;” in nylon 66, there are nuclear resonance effects near 120, 200, 330, and 370°K.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1962.1205916805
