Materials Literature
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Water- and alkali-soluble cotton fibers, yarns, and threads have been prepared by two methods. The cotton is preferably pretreated by pressure-kiering in 2% sodium hydroxide to remove the noncellulosic materials, and then treated with monochloroacetic acid and sodium hydroxide by either a one-step or a two-step proces…
The viscosity and electrical resistance of members of the systems Li 2 O–B 2 O 3 , Na 2 O–B 2 O 3 , and K 2 O–B 2 O 3 have been measured in the approximate temperature range 600° to 1000°C. The log viscosity isotherms in the range 700° to 800°C. showed a minimum in the low‐alkali region followed by a maximum as the al…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarboxymethylcellulose in the Free Acid FormS. F. Dieckman, J. G. Jarrell, and R. S. VorisCite this: Ind. Eng. Chem. 1953, 45, 10, 2287–2290Publication Date (Print):October 1, 1953Publication History Published online1 May 2002Published inissue 1 October 1953https://pubs.acs.…
The UO 2 –Al 2 O 3 phase equilibrium system was found to contain no new compounds or solid solutions. Uranium dioxide melted at 2878°± 22°C. and Al 2 O 3 melted at 2034°± 16°C. The eutectic temperature was approximately 1930°C. There is an indication that two immiscible liquids formed above the eutectic temperature be…
Microphone carbon has been produced by deposition of pyrolytic carbon films over the surfaces of small spherules of silica. The properties of contacts between these spherules are shown to be dependent on the structure and geometry of the carbon surface as determined by electron diffraction and microscopic studies. The…
J. H. Rediske, A. A. Selders; The Absorption and Translocation of Strontium by Plants 1, Plant Physiology, Volume 28, Issue 4, 1 October 1953, Pages 594–60
(1953). THERMAL PROPERTIES OF TEXTILE MATERIALS. Journal of the Textile Institute Transactions: Vol. 44, No. 10, pp. T449-T476.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Cupric and Ferric Citrate Complexes1Robert C. Warner and Ione WeberCite this: J. Am. Chem. Soc. 1953, 75, 20, 5086–5094Publication Date (Print):October 1, 1953Publication History Published online1 May 2002Published inissue 1 October 1953https://pubs.acs.org/doi/10.1021/j…
Abstract After making preliminary tests of methods proposed by other investigators for determining the fixed potassium of soils and also of several new approaches, the approach found most promising — heating at 500° C for two hours — was investigated in considerable detail. It was found that on heating ammonium satura…
Glass forming polymers exhibit a rapid rise of activation energy for molecular motion as T is lowered through the glass temperature. This phenomena is explained here in two different but largely equivalent ways. The first method assumes that in order for a polymer segment to move (i.e., rotate or jump) an energy great…
Recent experiments have shown that the specific heat of graphite varies as T2 instead of T3 between 15°K and 80°K. In this paper such a behavior is shown to be a consequence of the elastic anisotropy of graphite, and therefore an intrinsic property, rather than a particle size effect as suggested by Gurney, or a plate…
The heat capacity of thorium dioxide was determined from 10 to 305°K in an adiabatic calorimeter. As expected, no anomaly was observed in the heat capacity. The enthalpy, entropy, and free energy were calculated from the heat-capacity data and are tabulated for several temperatures. At 298.16°K the entropy and the ent…
The specific heat of high-purity Acheson graphite prepared by the National Carbon Company has been measured from 13° to 300°K. In the region 13° to 54°K the Cp data follows a T2 dependence quite accurately in agreement with previous experimental work and recent theoretical investigations of specific heat in strongly a…
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