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  • Articles  (37,714)
  • Springer  (18,932)
  • Springer Nature  (6,834)
  • Wiley  (6,607)
  • American Geophysical Union  (2,497)
  • American Association for the Advancement of Science (AAAS)  (2,027)
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  • 2010-2014
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  • 1985-1989  (26,776)
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  • 1985  (26,776)
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  • Articles  (37,714)
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  • 2010-2014
  • 2000-2004
  • 1985-1989  (26,776)
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  • 11
    Electronic Resource
    Electronic Resource
    Reactive polymers (1985)
    Springer
    Polymer bulletin 14 (1985), S. 265-270 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Two methods of the synthesis of tributyl ammonium derivatives of glycidyl methacrylate — ethylene dimethacrylate copolymers with various contents of the crosslinking agent were examined. While the two-step process which consists in a reaction with dibutyl amine followed by alkylation with butyl bromide gives products with up to 1.5 mmol/g of required groups, in the case of the single-step reaction of the epoxide group with tributyl amine the content does not exceed 0.4 mmol/g. The use of diamines for increasing the distance between the quaternary group and the polymer backbone does not yield a readily definable product, and cannor therefore become the method of choice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254948
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  • 12
    Electronic Resource
    Electronic Resource
    The synthesis and characterization of cationic photoinitiators bearing two and three photoactive triarylsulfonium groups in the same molecule (1985)
    Springer
    Polymer bulletin 14 (1985), S. 279-286 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary A novel series of photoinitiators for cationic polymerization have been prepared which bear two and three photoactive triarylsulfonium groups in the same molecule. These compounds have been fully characterized by means of their UV and C-NMR spectra and liquid chromatography as well as by their elemental analyses. The multifunctional triarylsulfonium salts have been compared among themselves and against monofunctional triarylsulfonium salts in the photoinitiated cationic polymerization of dl-limonene dioxide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254950
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  • 13
    Electronic Resource
    Electronic Resource
    Miscibility and melting in poly(butylene terephthalate)/ poly(bisphenol A-carbonate) blends (1985)
    Springer
    Polymer bulletin 14 (1985), S. 399-406 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The miscibility of blends of poly(butylene terephthalate) and poly(bisphenol A-carbonate) was investigated using differential scanning calorimetry. Contrary to previously reported data, PBT and PC were found to be almost completely immiscible over the entire compostion range studied. The minor change in Tg's observed for samples quenched form the melt can be attributed to transesterification at elevated temperatures. The melting behavior and normalized enthalpy of fusion are somewhat dependent on composition but the behavior is erratic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263454
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  • 14
    Electronic Resource
    Electronic Resource
    Living cationic polymerization of vinyl ethers with a functional group (1985)
    Springer
    Polymer bulletin 14 (1985), S. 417-423 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Two unsaturated ester-containing vinyl ethers, 2-vinyloxyethyl acrylate $$(\mathop 1\limits_ )$$ and sorbate $$(\mathop 2\limits_ )$$ , were polymerized by the hydrogen iodide/iodine (HI/I2) initiating system in toluene at −15 or −40°C, to give “living” polymers, having a very narrow molecular weight distribution (Mw/¯Mn=1.10–1.15) and crosslinkable via their pendant C=C double bonds. The number-average molecular weight of the polymers increased in direct proportion to conversion, and further increased on addition of a new monomer feed to a polymerized reaction mixture. According to 1H and 13C NMR structural analysis, the polymerization proceeds exclusively via the vinyloxyl group of the potentially bifunctional monomers without undesirable side reactions of the unsaturated ester pendants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263457
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  • 15
    Electronic Resource
    Electronic Resource
    Copolymerization of methyl- and buthylmethacrylate with electron-donor N-(2-hydroxyethyl)carbazolyl methacrylate and electron-acceptor (β-hydroxyethyl)-3,5-dinitrobenzoyl methacrylate (1985)
    Springer
    Polymer bulletin 14 (1985), S. 439-445 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The radical copolymerization of methyl- and butyl methacrylates with an electrondonor monomer: N-(2-hydroxyethyl)-carbazolyl methacrylate and an electron-acceptor monomer: (β-hydroxyethyl)-3,5-dinitrobenzoyl-methacrylate respectively, in dioxane at 60°C was investigated. The reactivity ratios of the binary systems were computed by using the Kelen-Tüdös method. The azeothropic compositions were established according to the respective copolymerization diagrams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263460
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  • 16
    Electronic Resource
    Electronic Resource
    Small-angle X-ray scattering study of halato-telechelic polybutadienes (1985)
    Springer
    Polymer bulletin 14 (1985), S. 461-468 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The small-angle X-ray scattering curves of carboxy-telechelic polymers exhibit very strong scattering at the lowest angles which points to the presence of large aggregates in the samples. Beyond the position of the main scattering maximum, common to all ionomers, a faint modulation is observed at a position corresponding to a second diffraction order. These observations are discussed with respect to other data in the litterature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263463
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  • 17
    Electronic Resource
    Electronic Resource
    Announcement (1985)
    Springer
    Polymer bulletin 14 (1985), S. 477-477 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263466
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  • 18
    Electronic Resource
    Electronic Resource
    Polylactones (1985)
    Springer
    Polymer bulletin 14 (1985), S. 491-495 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Bulk polymerizations of L,L-lactide were conducted at 120 and 180°C, but mainly at 150°C. Magnesium oxide, ethoxide, acetate, stearate, and 2,4-pentane dionate were used as catalysts. Time conversion curves show that at least a temperature of 150°C and a reaction time of 72 h is required for maximum conversion. The highest yields (up to 96 %) were obtained with magnesium oxide. However, all initiators, in particular magnesium oxide, caused racemization which increased with reaction time and temperature. Polymerizations in solutions at temperatures around 100°C failed regardless of the solvent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271605
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  • 19
    Electronic Resource
    Electronic Resource
    Polylactones (1985)
    Springer
    Polymer bulletin 14 (1985), S. 497-502 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary L,L-lactide was polymerized in bulk at 120°C, 150 or 180°C by means of various metal oxides, carbonates or carboxylates. Yield, viscosities and optical rotation were measured and compared. Several catalysts enable a nearly complete conversion even at 120°C indicating rapid diffusion of the monomer in the solid reaction mixture. At 180°C only SnO and Sb2O3 proved to be useful catalyst, because they gave within 12 h yields 〉 80% along with an optical purity around 97%. Longer reaction times lead at 180°C to substantial racemization in all cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271606
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  • 20
    Electronic Resource
    Electronic Resource
    Diacetoxyiodobenzene and bis(trifluoroacetoxy)iodobenzene as photoinitiators for cationic polymerisations (1985)
    Springer
    Polymer bulletin 14 (1985), S. 523-526 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary It is shown that i-butyl vinyl ether, tetrahydrofuran, epichlorhydrin and cyclohexene oxide, which undergo typically cationic polymerisation, are polymerised by UV-irradiation in the presence of diacetoxyiodobenzene or bis(trifluoroacetoxy)iodobenzene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271610
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