Wiley
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Kinetic constants for styrene polymerizationAbstract Values for A ′ and C tr ,m
Wiley - Tập 16 Số 82 - Trang 311-314 - 1955
Aroyl disulfides as promoter‐modifiers for copolymerization of butadiene and styreneAbstract Benzoyl, anisoyl, veratroyl, p ‐bromobenzoyl, p ‐phenylbenzoyl, p ‐benzoylbenzoyl, p ‐methylsulfonylbenzoyl, p (N ,N ‐dimethylsulfonamido)‐benzoyl and ‐naphthoyl disulfides are ...
Wiley - Tập 3 Số 1 - Trang 58-65 - 1948
Infrared spectra of crystalline polysaccharides. I. Hydrogen bonds in native cellulosesAbstract The infrared spectra of oriented films of valonia cellulose and of ramie and bacterial cellulose crystallites have been observed in the 3 μ region. Polarization properties of the bands have also been determined. The differences between the polarized spectra of bacterial and ramie crystallites in this region are attributed to per cent crystallinity and orien... ... hiện toàn bộ
Wiley - Tập 37 Số 132 - Trang 385-395 - 1959
Dissociation of weak polymeric acids and basesAbstract The electrolytic dissociation of several polymeric acids and bases in aqueous solutions has been investigated. The potentiometric behavior is well described by the following equations, For polyacids:
and for polybases:
pK 0 is t... ... hiện toàn bộ
Wiley - Tập 13 Số 68 - Trang 69-84 - 1954
Dynamic mechanical measurement of M̄nAbstract A procedure is described for the measurement of number‐average molecular weight M̄n m... hiện toàn bộ
Wiley - Tập 44 Số 143 - Trang 149-154 - 1960
Glass transition temperatures of copolymersAbstract The Gordon‐Taylor equation relating the glass transition temperature θ of a copolymer to the glass transition temperatures θ1 and θ2 of the homopolymers is equivalent to
where c 1 and c 2... hiện toàn bộ
Wiley - Tập 28 Số 117 - Trang 319-330 - 1958
The molecular structure of polyethylene. XI. Weight‐ and number‐average molecular weights of selected samplesAbstract Improved methods for measuring weight‐ and number‐average molecular weight of polymers soluble only at elevated temperatures are applied to selcted samples of polyethylene. For two samples of essentially linear polyethylene, number‐average molecular weights by cryoscopy are 11,500 and 13,000, and weight‐average molecular weights by light scattering are 144,... ... hiện toàn bộ
Wiley - Tập 62 Số 173 - Trang 251-261 - 1962
A light‐scattering study of low pressure polyethylene fractionsAbstract Low pressure polyethylene fractions of molecular weight above 100,000 have been studied by the light scattering method. The presence of long chain branches in fractions of molecular weight above 300,000 was indicated by the data. The molecular weight‐intrinsic viscosity relationship for linear polyethylene chains was found to be [η] = 4.60 × 10−4<... ... hiện toàn bộ
Wiley - Tập 36 Số 130 - Trang 287-294 - 1959
Fractionation of polyethyleneAbstract A procedure and apparatus are described for the large scale (50‐gram) fractionation of high‐density polyethylene by Desreaux's fractional extraction technique. Two samples of Ziegler polyethylene were fractionated by this technique and the intrinsic viscosity in decalin at 135°C. and molecular weight by light scattering were measured on the fractions. The r... ... hiện toàn bộ
Wiley - Tập 36 Số 130 - Trang 3-19 - 1959
Comments on intrinsic viscosity–weight‐average molecular weight relationships for polyethyleneAbstract Relationships, as reported in the literature, between intrinsic viscosity and weight‐average molecular weight for high‐density polyethylene are in poor agreement. Experimental work in this laboratory, aimed at resolving similarly conflicting data, suggests that likely causes for these discrepancies are: polydispersity, incorrect dissymmetry correction, and ... ... hiện toàn bộ
Wiley - Tập 36 Số 130 - Trang 91-103 - 1959
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