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  • 1
    Electronic Resource
    Electronic Resource
    Vinyl polymerization initiated by peroxydiphosphate (1983)
    Springer
    Colloid & polymer science 261 (1983), S. 40-44 
    Details
    ISSN: 1435-1536
    Keywords: Polymerization ; Acrylamide ; Methacrylamide ; Peroxydiphosphate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The kinetics of aqueous polymerization of acrylamide and methacrylamide initiated by potassium peroxydiphosphate has been investigated. The kinetic orders with respect to peroxydiphosphate and monomer were close to 0.5 and 1 respectively. Overall activation energies were computed and a suitable kinetic scheme suggested. Comparison with kinetic studies of the analogous acrylamide polymerization by peroxydisulphate shed doubt on the cage effect interpretation of the complex order with respect to monomer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411515
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  • 2
    Electronic Resource
    Electronic Resource
    Vinylpolymerisation von Acrylnitril mit dem H2CrO4/1,2-Propandiol-System in wäßrigem HClO4 (1977)
    Springer
    Colloid & polymer science 255 (1977), S. 1144-1144 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01549953
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  • 3
    Electronic Resource
    Electronic Resource
    Redoxpolymerisation von Acrylnitril mit dem V5+/Propan-1,2-diol-System in wäßriger Schwefelsäure (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 200-200 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01679393
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  • 4
    Electronic Resource
    Electronic Resource
    Redoxpolymerisation von Acrylnitril: Kinetik der mit dem Redoxsystem aus 1-Propanol und Chromsäure ausgelösten Reaktion (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 715-715 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01784509
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  • 5
    Electronic Resource
    Electronic Resource
    Polymerization of acrylonitrile initiated by ceric ion-organic sulphur compounds reducing agent systems (1982)
    Springer
    Colloid & polymer science 260 (1982), S. 1114-1117 
    Details
    ISSN: 1435-1536
    Keywords: Polymerization acrylonitrile ; ceric ion ; sulphur compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Polymerization of acrylonitrile was investigated using ceric ion-organic sulfur compounds reducing agent systems. The organic sulphur compounds used as the reductants are, thiourea, thioacetamide, 2-amino ethanethiol, cysteine, and thioglycolic acid. The rates of polymerization were measured within the temperature range of 25 to 40 °C. The initiation was by the radical produced from Ce4+-sulphur compounds reaction. The rate of monomer disappearance was proportional to [M]1.5, [S]0.5 and the rate of ceric disappearance was directly proportional to [S] and [Ce4+]. A kinetic scheme involving the initiation by the primary radical and termination of the growing polymer radicals by the mutual type has been suggested and the kinetic percentage have been evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411230
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of unperturbed dimensions of polymers in binary solvent mixtures from viscosity measurements (1987)
    Springer
    Colloid & polymer science 265 (1987), S. 982-985 
    Details
    ISSN: 1435-1536
    Keywords: Measurement ; unperturbed ; dimension ; poly(vinyl pyrrolidone ; poly(vinyl alcohol)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Intrinsic viscosity measurements were carried out on poly(vinyl pyrrolidone) and poly(vinyl alcohol) in various solvents and solvent mixtures. The values ofφ, [η] andk, the latter two being the fundamental terms in the equationC/η sp =1/ηkC, were utilized for the determination of the unperturbed dimensions in solution. The values of (¯r o 2 /M w )1/2 were calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412401
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  • 7
    Electronic Resource
    Electronic Resource
    Vinyl polymerization initiated by peroxydiphosphate (1982)
    Springer
    Colloid & polymer science 260 (1982), S. 771-775 
    Details
    ISSN: 1435-1536
    Keywords: Polymerization ; Acrylonitrile ; Methylmethacrylate ; Peroxydiphosphate-Thioglycollic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The kinetics of the aqueous polymerization of acrylonitrile and methyl methacrylate initiated by the peroxydiphosphate-thioglycollic acid redox system was investigated at 40, 45, 50, 55, and 60 °C. The rates of polymerization were measured at different concentrations of oxidant, activator and monomer. From the results, it was concluded that the polymerization reaction is initiated by an organic free radical arising from the peroxydiphosphate-thioglycollic acid system and termination by mutual type. On the basis of experimental observations of the dependence of the rate of polymerization,R p on various variables, a suitable kinetic scheme has been proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01452067
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  • 8
    Electronic Resource
    Electronic Resource
    Polymers from renewable resources, VI. Synthesis and characterization of thermosetting resins derived from cashewnut shell liquid/formaldehyde/substituted aromatic compounds (1995)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 233 (1995), S. 1-13 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Aus Cardanol, einem Bestandteil der Schale der Cashewnuß, wurde durch Kondensation mit Formaldehyd und substituierten aromatischen Verbindungen unter saurer oder basischer Katalyse eine Reihe von Harzen hergestellt und anhand ihrer IR-Spektren charakterisiert. Sie lassen sich als selektive Ionenaustauscher für bestimmte Ionen verwenden, was mittels einer Gleichgewichtsmethode geprüft wurde. Das thermische Verhalten der Harze wurde untersucht, und ein plausibler Abbaumechanismus wird vorgeschlagen.
    Notes: A large number of resins have been synthesized by reacting cardanol, a constituent of cashewnut shell liquid, with formaldehyde and substituted aromatic compounds in the presence of acidic and basic catalysts. The resins have been characterized by IR spectra. They were shown to be selective ion exchangers for certain metal ions. A batch equilibrium method was used for studying the selectivity of the metal ions. The thermal behaviour of the resins has been studied and a plausible degradation mechanism has been suggested.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1995.052330101
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  • 9
    Electronic Resource
    Electronic Resource
    Radiation-Induced graft copolymerization, I. Graft copolymerization of methyl methacrylate onto nylon-6 (1985)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 131 (1985), S. 187-194 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die strahlungsinduzierte Pfropfcopolymerization von Methylmethacrylat auf Nylon-Fasern wurde bei Raumtemperatur untersucht. Das Homopolymere wurde durch Soxhlet-Extraktion abgetrennt. Die Pfropfausbeute nahm mit der Strahlendosis von 0,1768 bis 0,7072 Mrad und mit der Monomerkonzentration zu. Die Zugabe von Kupfersulfat und Natriumlaurylsulfat verminderte die Bildung von Homopolymerem. Die Zahl der pro 100 eV absorbierter Energie gebildeten Pfropfzweige (Gb) und der Pfropfungsgrad (Gb) wurden berechnet. Ein Reaktionsmechanismus wird vorgeschlagen.
    Notes: The radiation-induced graft copolymerization of methyl methacrylate onto nylon fibers was investigated at room temperature. The homopolymer was separated by soxhlet extraction. The graft yield increases with increase of dose rate from 0.1768 to 0.7072 Mrad. The percentage of grafting increase with increasing monomer concentration. Addition of copper sulphate and a non-ionic surfactant, sodium lauryl sulphate, supresses the formation of homopolymer. The value of Gb, the number of branches per 100 eV of energy absorbed in the substrate polymer, and the value of α, the fraction of substrate polymer grafted, have been computed. A kinetic scheme has been suggested.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1985.051310116
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  • 10
    Electronic Resource
    Electronic Resource
    Redox polymerization of acrylonitrile. Kinetics of the reaction initiated by the redox system tartaric acid-V5+ (1975)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 13 (1975), S. 2075-2086 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Kinetics of vinyl polymerization of acrylonitrile initiated by the redox system tartaric acid-V5+ have been investigated in aqueous sulfuric acid in the temperature range 30-40°C. The rates of polymerization and V5+ disappearance and the chain lengths of polyacrylonitrile were measured. From the results it is concluded that the polymerization reaction is initiated by an organic free radical arising from the V5+-tartaric acid reaction with termination by V5+ ions. A suitable kinetic scheme has been proposed, and the various rate and energy parameters were evaluated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1975.170130912
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