Wiley
0021-8871
1934-998X
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
Ideal copolymers and the second‐order transitions of synthetic rubbers. i. non‐crystalline copolymers
Tập 2 Số 9 - Trang 493-500 - 1952
AbstractTheoretical and practical evidence is put forward to show that
copolymers can be treated like solutions of small molecules in the
interpretation of packing phenomena, and that ideal volume‐additivity of the
repeating units in copolymers is frequently realized. On this basis equations
are derived for predicting θ, the second‐order transition temperature, of binary
copolymers from the two se...
An improved method for the calculation of pore size distribution from adsorption data
Tập 14 Số 3 - Trang 109-114 - 1964
AbstractA method for calculating the pore size distribution from adsorption
isotherms on porous solids is described, which is more exact and less tedious to
use than some previously described methods. The method of compiling tables for
calculation is shown and an example of such a calculation is given.
Electrical measurements in the study of immersed paint coatings on metal. I. Comparison between capacitance and gravimetric methods of estimating water‐uptake
Tập 4 Số 2 - Trang 62-72 - 1954
AbstractAn electrical capacitance method of estimating the water‐uptake of paint
films on metal immersed in sea‐water has given, for many paint formulations,
values agreeing with those obtained by a gravimetric method. For a few paints,
however, pronounced disagreement was shown between values obtained by the two
methods.Theoretical considerations show that such differences indicate, in
general, a...
Investigations on organo‐tin compounds. VIII. preparation of some organo‐tin hydrides
Tập 7 Số 7 - Trang 366-369 - 1957
AbstractThe preparation, according to the slightly modified procedure of Finholt
et al., of the following organo‐tin hydrides is described: triethyltin hydride,
tri‐n‐propyltin hydride, tri‐n‐butyltin hydride, triphenyltin hydride,
di‐n‐propyltin dihydride, di‐n‐butyltin dihydride, diphenyltin dihydride and
n‐butyltin trihydride.In addition, the preparation of the intermediate
n‐butyltin trichlori...
Influence of silica on the hydration of 3 CaO,SiO2
Tập 14 Số 8 - Trang 338-346 - 1964
AbstractAmorphous silica accelerates the hydration rate of 3CaO,SiO2. This
acceleration can be explained by assuming that the silica, by lowering calcium‐
and hydroxyl‐ion concentrations during the first minutes of the hydration,
increases the conversion rate of a first protective hydrate layer into another
less protective one.In Portland cement pastes, not only hydration of alite but
also consump...
Hydration of tricalcium silicate
Tập 17 Số 9 - Trang 246-250 - 1967
AbstractResults of following the quantities of free Ca(OH)2 and of tricalcium
silicate (C3S) during the hydration of C3S, and also the influence of the
presence of free CaO on this reaction are in accordance with the hypothesis of
Stein & Stevels with regard to the hydration of C3S. at the first contact
between C3S and water, a surface hydrate, invisible by electron microscope
methods, is consider...
The preparation and properties of fractions from high density polyethylenes
Tập 14 Số 3 - Trang 131-140 - 1964
AbstractA number of fractions have been prepared on a large scale from Ziegler
0·945‐density polyethylene and Phillips 0·96‐density polyethylene. Their
physical properties have been compared with those of whole polymers having much
broader distributions of molecular weight. It is shown that the main effects of
narrowing the molecular‐weight distribution of polyethylene are to lower its
density, to...
Reactivity of lime and related oxides. I. Production of calcium oxide
Tập 8 Số 12 - Trang 793-797 - 1958
AbstractThe calcination of calcium hydroxide and of calcium carbonate
(precipitated or prepared from calcium oxalate monohydrate) has been studied by
determining the changes occurring in the specific surface and lattice structure
during each decomposition in vacuo or in air at a series of temperatures up to
900° or 1000°c.In parallel with earlier observations on calcium hydroxide, the
decompositio...
Thermal stability of p‐phenylene sulphide polymers
Tập 17 Số 10 - Trang 269-275 - 1967
AbstractThe thermal stability of a series of linear and branched p‐phenylene
sulphide polymers at 350° has been evaluated by differential thermal analysis,
thermogravimetric analysis and weight‐loss studies. It has been concluded that
there is some indication that the thermal stability increases with the degree of
branching present in the polymer and that the stability can be further improved
by a...
The polyphosphates of calcium, strontium, barium and magnesium: Their complex character, composition and behaviour
Tập 4 Số 8 - Trang 419-429 - 1954
AbstractA study of pyro‐ and tripoly‐phosphates, by heterometric (photometric
study of suspensions), pH and conductometric methods, was made on a quantitative
basis. From the curves obtained, the composition and properties of the salts and
complexes, which exist in solution or in the solid state, were deduced. All
three methods gave results that were in complete accordance with one another.
Howeve...