Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Review of Scientific Instruments
60 (1989), S. 760-764
ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A magnetic sphere rheometer which is fully controlled by a personal computer has been developed. It is capable of measuring viscosities in the range of 0.1–5×104 Pa (100–5×107 cP). It can operate at shear rates between 1 and 2×10−4 s−1 and measure relaxation times down to 100 ms. The precision of the determined viscosities is in the order of 0.3%. The present rheometer is an improvement compared to existing magnetic sphere rheometers both concerning the precision and the viscosity range of the measurements. Measurements on viscosity standards, as well as on semidilute solutions of poly(isobutylmethacrylate-t-butylaminoethylmethacrylate) [poly(IBMA-tBAEMA)] in dimethylacetamide (DMAA) and tetramethylethylenediamine (TMEDA) were performed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1141086
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