Wiley

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Studies on the validity of the Einstein viscosity law and Stokes' law of sedimentation
Wiley - Tập 16 Số 81 - Trang 19-30 - 1955
P. Y. Cheng, H. K. Schachman
AbstractUltracentrifugal studies on polystyrene latex particles (PSL) in solutions of different densities prepared either from mixtures of H2O and D2O or from various concentrations of sucrose in water yielded a value, by interpolation, of 1.0520 for the density of solution in which the particles neither sediment nor float....... hiện toàn bộ
Aroyl disulfides as promoter‐modifiers for copolymerization of butadiene and styrene
Wiley - Tập 3 Số 1 - Trang 58-65 - 1948
Robert L. Frank, James R. Blegen, A. J. Deutschman
AbstractBenzoyl, anisoyl, veratroyl, p‐bromobenzoyl, p‐phenylbenzoyl, p‐benzoylbenzoyl, p‐methylsulfonylbenzoyl, p(N,N‐dimethylsulfonamido)‐benzoyl and ‐naphthoyl disulfides are ...
The termination reaction in radical polymerizations. Polymerizations of methyl methacrylate and styrene at 25°
Wiley - Tập 12 Số 1 - Trang 449-459 - 1954
J. C. Bevington, H. W. Melville, R. P. Taylor
AbstractStyrene and methyl methacrylate have been polymerized at 25° using α,α′‐azo‐bis‐isobutyronitrile labeled with C14 as initiator. The numbers of initiator fragments per polymer molecule have been determined by measurements of the average molecular weights of the polymers by osmometry and the specific activities of the polymers and the ini...... hiện toàn bộ
Phenylene sulfide polymers. II. Structure of polymers obtained by the Macallum polymerization
Wiley - Tập 43 Số 141 - Trang 167-181 - 1960
Robert W. Lenz, Carl E. Handlovits
AbstractPolymers prepared by the Macallum homopolymerization and copolymerization were compared to a linear phenylene sulfide polymer prepared by the self‐condensation of sodium p‐chlorothiophenoxide. The properties compared included solubility, softening point, melting point, x‐ray diffraction pattern, infrared spectrum, and thermal stab...... hiện toàn bộ
Polybenzyl type polymers
Wiley - Tập 15 Số 80 - Trang 503-514 - 1955
Howard C. Has, D. I. Livingston, Martin Saunders
AbstractThe various proposed structures for polymers derived from benzyl type compounds have been discussed and the likelihood of these structures considered in the light of a study of their preparation and properties. Both the para substituted structure of Shriner and Berger and the pendant structure of Henne and Leicester were rejected chiefly on the basis of phy...... hiện toàn bộ
Infrared spectra of high polymers. VI. Polystyrene
Wiley - Tập 27 Số 115 - Trang 241-254 - 1958
Changhao Liang, S. Krimm
AbstractThe infrared spectrum of polystyrene has been obtained in the region of 70 cm.−1 to 3200 cm.−1. These data, plus Raman scattering data from the literature, are used to make a complete assignment of the normal modes of the polystyrene molecule. The benzene ring modes have been analyzed in detail in terms of ... hiện toàn bộ
Extra reflections in the x‐ray diffraction pattern of polyethylenes and polymethylenes
Wiley - Tập 24 Số 107 - Trang 496-499 - 1957
P W Teare, David R. Holmes
Poly(4′‐vinyl‐cis‐benzalacetophenone)
Wiley - Tập 45 Số 146 - Trang 325-340 - 1960
C. C. Unruh
AbstractThe trans isomers of both poly(4′‐vinylbenzalacetophenone) and a model compound, 4′‐ethylbenzalacetophenone, readily form the corresponding cis isomers on exposure of their solutions to ultraviolet radiation. The cis isomers can be isolated and, in the case of the nonpolymeric ...... hiện toàn bộ
Size and shape of the molecules in artificially branched polystyrene
Wiley - Tập 8 Số 5 - Trang 477-494 - 1952
C. D. Thurmond, Bruno H. Zimm
AbstractA sample of copolymer of divinylbenzene and styrene has been prepared and fractionated. Using the techniques of light scattering and viscometry the relations between the molecular size, intrinsic viscosity, and weight‐average molecular weight have been determined. The results may be interpreted in terms of the already existing theory of branched polymers. T...... hiện toàn bộ
Method of colloid titration (a new titration between polymer ions)
Wiley - Tập 8 Số 2 - Trang 243-253 - 1952
Hiroshi Terayama
AbstractA general discussion about the method of colloid titrations is given in this report. A new titration method is based on the stoichiometric combination of positive and negative colloid ions. The end point is decided by indicators (known as metachromatic coloring matters) like toluidine blue. The standard colloid reagents are P.V.S.‐K (potassium salt of polyv...... hiện toàn bộ
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