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  • 1
    Electronic Resource
    Electronic Resource
    A new synthetic elastomer based on a chlorophosphonated polyolefin (1961)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 5 (1961), S. 157-162 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A new synthetic elastomer has been obtained based on an ethylene-propylene copolymer prepared using an organometallic catalyst system. Reactive sites (phosphonyl dichloride groups) are placed on the copolymer chain by treating the polymer with phosphorus trichloride and oxygen. After hydrolysis or alcoholysis of the phosphonyl dichloride groups to phosphonic acid or phosphonic acid esters, vulcanization may be carried out by reaction with metallic oxides, particularly lead oxide. Vulcanizates of the polyolefin elastomer have outstanding resistance to heat, ozone, and oxygen, and have excellent electrical properties. This combination suggests the use of this material in high temperature electrical applications.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1961.070051405
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  • 2
    Electronic Resource
    Electronic Resource
    Dispersion in laminar flow by simultaneous convection and diffusion (1963)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 9 (1963), S. 190-195 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690090211
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  • 3
    Electronic Resource
    Electronic Resource
    Structure of O-glycosidically linked oligosaccharides synthesized by the insect cell line Sf9 (1990)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 43 (1990), S. 67-79 
    Details
    ISSN: 0730-2312
    Keywords: insect cells ; O-glycosidic glycosylation ; glycosyltransferases ; O-Linked oligosaccharides ; O-glycosylation ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: The O-glycosidically linked Oligosaccharides on the pseudorabies virus (PRV) glycoprotein gp50 synthesized by three different cell lines were studied. The intact membrane protein (gp50) was expressed in Vero cells and in the insect cell line Sf9. In addition, a truncated, secreted form lacking the transmembrane and cytoplasmic domains (gp50T), was expressed in CHO and Sf9 cells. The protein, both in intact and truncated form, synthesized by the two mammalian cells contained only the disaccharide Galβ1-3GalNAc, either unsubstituted or substituted with one or tow sialic acid residues. By contrast, the major O-linked structure on gp50 and gp50T synthesized by Sf9 cells was the monosaccharide GalNAc. The Sf9 cells also linked lower amounts of Galβ1-3GalNAc to gp50 (12%) and gp50T (26%). None of the structures synthesized by Sf9 cells contained sialic acid. Measurements of the two relevant glycosyltransferases revealed that while all three cell lines contain comparable levels of the UDP-GalNAc:polypeptide, N-acetylgalactosaminyltransferase activity, there is a greater variation in the levels of UDP-Gal: N-acetylgalactosamine, β1-3 galactosyltransferase, with the Sf9 cells containing the lowest level.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240430107
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  • 4
    Electronic Resource
    Electronic Resource
    Polymer blends as high explosive bindersWork performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract Number W-7405-ENG-48 (1986)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 26 (1986), S. 1489-1499 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: An approach to high-density, high-modulus binders for explosives is to blend low-density, high-modulus polymers with high-density, low-modulus polymers. Improved properties, which these pairs theoretically should have, are discussed. Two attempts to achieve miscibility between a high-density fluoropolymer (Kel-F 800) and high-modulus thermoplastics (Lucite 130 and Phenoxy PKHJ) were unsuccessful. These blends are immiscible and their physical properties are additive or only slightly enhanced. Anelastic properties of the blends indicate phase separation by the presence of two glass transitions, one associated with each phase.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760262105
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  • 5
    Electronic Resource
    Electronic Resource
    Polyimides from diisocyanates, dianhydrides, and tetracarboxylic acids (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 19 (1975), S. 2961-2980 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: High molecular weight polyimide resins have been prepared by the reaction of diisocyanates and a mixture of dianhydrides and their acids in the presence of a tertiary amine catalyst. The polyimides thus formed can be made into tough flexible films similar to those polyimides prepared by the conventional method of reacting a dianhydride with a diamine. The preparation of high molecular weight polymer is affected by the purity of reagents, the anhydride-acid ratio, temperature, and moisture. Evidence from model compound studies is presented regarding the nature of the reaction mechanism.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1975.070191103
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  • 6
    Electronic Resource
    Electronic Resource
    Polyimides from diisocyanates, dianhydrides, and their dialkyl esters (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 22 (1978), S. 1983-1990 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: High molecular weight polyimide polymers have been prepared by the reaction of dissocyanates and a mixture of dianhydrides and their dialkyl esters in aprotic solvents. No catalyst is necessary, but high polymer formation is affected by the anhydride/ester ratio and temperature. Dianhydrides such as PMDA, BTDA, TMA, and their esters have been used successfully. Mixtures of these materials have also been used. Tough, flexible films can be obtained from these polymers.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1978.070220719
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  • 7
    Electronic Resource
    Electronic Resource
    Transient diffusion effects in the study of early platelet adhesion (1976)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 10 (1976), S. 145-160 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: In the study of interactions of blood with artificial surfaces, it is common practice to wet these surfaces with a saline solution before exposing them to blood. The effect of this procedure on subsequent adhesion of blood platelets has been investigated both theoretically and experimentally, with a spinning disc apparatus. A large part of the observed delay in the initiation of platelet adhesion when using this apparatus is attributed to the time involved in displacing the prewetting fluid and bringing platelets near the surface. This observation is relevant to speculations of other researchers about the time course of adhesion-related reactions at the surface-proper. Other theoretical solutions are developed for the transient Leveque problem, which relates to a uniform shear-flow near a surface, and for a stagnation point apparatus. These solutions are compared with delay effects noticed in experimental data published by others.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820100113
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  • 8
    Electronic Resource
    Electronic Resource
    The incorporation of P32 into the nucleoproteins and phosphoproteins of the developing sea urchin embryo (1949)
    Philadelphia : Wiley-Blackwell
    Journal of Cellular and Comparative Physiology 33 (1949), S. 93-112 
    Details
    ISSN: 0095-9898
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1030330108
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  • 9
    Electronic Resource
    Electronic Resource
    Contrasting reactions for conversion of some dihydroaromatic cations to aromatic cations through hydrogen elimination (1975)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 10 (1975), S. 116-121 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Comparison of metastable peaks in the mass spectra of the monoterpenes alloöcimene and a-pyronene shows that they fragment through common ions. It is concluded that the acyclic triene (alloöcimene) undergoes electrocyclic ring closure to the cyclic diene (a-pyronene) and fragmentation then proceeds from an ionised form of a cyclic diene. The fragmentation proceeds to a series of ions [CnH2n-5]+, the decomposing forms of which are inferred to be protonated benzene (n = 6) and dihydrotropylium ions (n = 7, 8, 9). These ions react via loss of H2, the dihydrotropylium → tropylium conversion being characterised by a relatively large kinetic energy release in both un-substituted (n = 7) and methyl-substituted (n = 8, 9) cases.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210100205
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  • 10
    Electronic Resource
    Electronic Resource
    Structural dependence of the electrical conductivity of polyethylene terephthalatePaper presented at the 30th Conference on Electrical Insulation, National Academy of Sciences-National Research Council, October 23, 1961, Pocono Manor, Pa. (1962)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 62 (1962), S. 331-346 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The direct current conductivity of three different forms of polyethylene terephthalate was studied over a wide temperature and voltage range to determine the structural dependence of the conduction process. From the films in the amorphous, crystallized, and oriented and crystallized forms it was determined that crystallization reduces the conductivity by more than one order of magnitude. Orientation results in a sixfold decrease in conductivity. The conductivity does not change over a wide range of molecular weight or carboxyl end group concentration. As shown from model polymers and copolymers, disruption of chain symmetry and molecular packing, introduction of side chains, or any other modification which reduces the crystallinity and order, results in greater conductivity. The structural dependence of conductivity, the temperature dependence, and the current-voltage relationships of polyethylene terephthalate are consistent with a proposed ionic mechanism for the conduction process.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1962.1206217406
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