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  • 1
    Electronic Resource
    Electronic Resource
    Peculiarities of the thermal polymerization of the complex-bonded acrylamide (1993)
    Springer
    Russian chemical bulletin 42 (1993), S. 1344-1347 
    Details
    ISSN: 1573-9171
    Keywords: acrylamide, complexes ; polymerization ; differential scanning calorimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Peculiarities of the thermal polymerization of acrylamide bonded in a complex with CoII, NiII, or CuII nitrate have been studied by differential scanning calorimetry. The polymerization can occur in the regions prior to the melting of the complex, during melting, or right after it, depending on the rate of heating and the nature of the complexing agent. The effect of the addition of water and inorganic or polymeric powders on the form and character of the polymerization thermograms, which have a complex multimodal structure in the polymerization region, has been studied. The analysis of the results obtained indicates that during heating and melting complexes of a number of structures differing in their polymerization properties are formed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00699928
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and reactivity of metal-containing monomers. 21. Spontaneous polymerization of acrylamide coordinated to metal nitrates (1992)
    Springer
    Russian chemical bulletin 41 (1992), S. 1615-1620 
    Details
    ISSN: 1573-9171
    Keywords: acrylamide ; complex ; metal nitrate ; polymerization ; copolymerization ; polymers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Acrylamide coordinated to Cr(III), Bi(III), Pb(II), and Ca(II) nitrates polymerizes spontaneously in concentrated aqueous solutions at ∼20°C with formation of glass-like polymers containing water. The process takes from several hours to several days, depending on reaction conditions and the nature of the metal nitrate. The product contains water-soluble and water-insoluble fractions. The insoluble fraction is polyacrylamide containing no metal compound. The possibility of spontaneous copolymerization of acrylamide complexes of metal nitrates with other water-soluble monomers was established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00863582
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  • 3
    Electronic Resource
    Electronic Resource
    A calorimetric study of spontaneous polymerization in acrylamide systems containing metal nitrates (1993)
    Springer
    Russian chemical bulletin 42 (1993), S. 1023-1026 
    Details
    ISSN: 1573-9171
    Keywords: acrylamide ; polyacrylamide ; chromium nitrate ; erbium nitrate ; polymerization ; calorimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A calorimetric study of the kinetics of spontaneous polymerization of acrylamide in systems containing Cr(III) and Er(III) nitrates has been carried out. At 20–25 °C, the process is characterized by a considerable induction period (20–40 min), a fast increase of the polymerization rate, up to its maximum value (5–10 min), and its subsequent slow decrease to insignificant values. It has been established that the composition of the reaction mixture significantly affects the recorded polymerization rates, and practically does not change the time parameters and the integral degrees of conversion of the process, which are 20 and 80 % for the nitrates of Cr(III) and Er(III), respectively. The effect of the addition of water or inhibitors of radical reactions on the process has been studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00704191
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  • 4
    Electronic Resource
    Electronic Resource
    Calorimetric study of polymerizing complexes of acrylamide with cobalt(ii) nitrate (1993)
    Springer
    Russian chemical bulletin 42 (1993), S. 1348-1351 
    Details
    ISSN: 1573-9171
    Keywords: acrylamide, CoII nitrate, complex ; polymerization ; calorimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Thermal polymerization of complexes of acrylamide with CoII nitrate has been investigated by differential scanning calorimetry. The conditions of the synthesis of the samples and their treatment have been found to affect the thermal and polymerization properties of the complexes. The existence of several structural modifications of the complex differing noticeably in their polymerization ability has been revealed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00699929
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  • 5
    Electronic Resource
    Electronic Resource
    Thermal polymerization of acrylamide during the formation of the structures of acrylamide complexes with metal nitrates (1995)
    Springer
    Russian chemical bulletin 44 (1995), S. 657-661 
    Details
    ISSN: 1573-9171
    Keywords: acrylamide, complexes ; polymerization ; differential scanning calorimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The effects of the composition of MnII, CoII or NiII nitrate hydrate — acrylamide (AAM) mixtures and of the duration of their aging at ambient temperature on the structurization of acrylamide complexes and on the character of their thermal polymerization have been studied by scanning and isothermic differential calorimetry. Structurization is a rather prolonged step in the synthesis of acrylamide complexes. The peculiarities and rate of this step are determined by the composition of the mixture and by the nature of the complexforming compound; it yields several structural modifications of the AAM complexes. The thermal polymerization of those structural forms of acrylamide complexes that polymerize at low temperatures may be formally described as polymerization in an acrylamide-nitrate-water mixture. The effective activation energy of the polymerization of acrylamide mixed with MnII nitrate hydrate is 45 kJ mol−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00698498
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  • 6
    Electronic Resource
    Electronic Resource
    Thermally initiated frontal polymerization of transition metal nitrate acrylamide complexes (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 32 (1994), S. 1201-1212 
    Details
    ISSN: 0887-624X
    Keywords: acrylamide ; complex ; metal nitrates ; polymerization ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The effect of the thermally initiated frontal polymerization of acrylamide complexes of transition metal nitrates such as those of Mn(II), Co(II), Ni(II), and Zn(II) was disclosed. The rate of the polymerization front propagation was found to be 2-9 × 10-2cm/c, depending appreciably on sample diameter and density, as well as the presence of radical inhibitor additives. The rate was found to decrease in the series: Co(II) 〉 Ni(II) 〉 Mn(II) 〉 Zn(II). Polymerization was shown to occur directly in the melting region of a complex at 80-100°C to give three-dimensional polymers. A mechanism of the polymerization being initiated with the products of the partial nitrate group decomposition was proposed. © 1994 John Wiley & Sons, Inc.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1994.080320701
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