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  • 1
    Electronic Resource
    Electronic Resource
    Polymerization of methyl methacrylate with ferric laurate in combination with various substituted amines as initiators (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 901-911 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The effect of various substituted amines on the polymerization of methyl methacrylate initiated by ferric laurate - amine as the initiator system has been studied in carbon tetrachloride medium at 60°C. Amines used are n-butyl amine, di-n-butyl amine. The rate of polymerization is found to follow the order: tertiary 〉 secondary 〉 primary amine. From the detailed kinetic studies it was found that the overall polymerization rate can be expressed by the equation: \documentclass{article}\pagestyle{empty}\begin{document}$ R_p = \frac{{k_p }}{{k_t^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} }}(k_1 f)^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} [{\rm Monomer}][{\rm Fe}^{3 + } ]^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} [{\rm Amine}]^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} $\end{document} The relative activity of the different amines has been found to be dependent on the relative electron-donating tendency of the substituents present in the amine. The mechanism of the polymerization is discussed on the basis of these results, and various kinetic constants are evaluated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1988.080260318
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  • 2
    Electronic Resource
    Electronic Resource
    Polymerization of methyl methacrylate with cupric laurate-N,N-dimethyl formamide as initiator system (1990)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 28 (1990), S. 3123-3135 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polymerization of methyl methacrylate with cupric laurate in combination with N,N-dimethyl formamide as initiator was studied in carbon tetrachloride medium at 60°C. The rate of polymerization was found to be proportional to the 3/2th power of the monomer concentrations and to the square root of both cupric laurate and DMF concentrations. Spectroscopic investigations indicated a ternary complex formation involving cupric ion, methyl methacrylate, and DMF. A reaction scheme is suggested on the basis of these results and various kinetic constants have been evaluated.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1990.080281118
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  • 3
    Electronic Resource
    Electronic Resource
    Polymerization of methyl methacrylate with manganic laurate in combination with different substituted thiols as initiators (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 30 (1992), S. 941-944 
    Details
    ISSN: 0887-624X
    Keywords: polymerization ; methyl methacrylate ; manganic laurate-substituted thiols ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1992.080300527
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  • 4
    Electronic Resource
    Electronic Resource
    Kinetic studies of nonaqueous polymerization of methyl methacrylate initiated by ferric laurate-n-hexyl amine system (1987)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 519-532 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polymerization of methyl methacrylate was studied in carbon tetrachloride medium with ferric laurate, a metal soap, in combination with n-hexyl amine as the initiator system at 60°C. The rate of polymerization was found to be linear with the monomer concentration and proportional to the square root of both ferric ion and amine concentration. A reaction scheme involving initial complex formation between ferric ion and amine and subsequent reaction of the complex with the solvent molecule to produce free radicals responsible for initiation of polymerization has been postulated to account for the observed results.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1987.080250207
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  • 5
    Electronic Resource
    Electronic Resource
    Polymerization of methyl methacrylate with cupric laurate-benzoin system as initiator (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 1687-1699 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polymerization of methyl methacrylate initiated by cupric laurate in combination with benzoin has been investigated in carbon tetrachloride medium at 60°C. The rate of polymerization was found to be proportional to the square root of both cupric ion and benzoin concentrations, and to the 1.5th power of the monomer concentration. Spectral studies indicated that there is a complex formation between cupric ion and the monomer methyl methacrylate. A reaction scheme, based on initial formation of the complex and its subsequent reaction with benzoin to produce the free radicals responsible for initiation has been postulated to explain the observed results.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270520
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  • 6
    Electronic Resource
    Electronic Resource
    Some notes on colour formation in the polymerization of methyl isopropenyl ketone (1959)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 33 (1959), S. 249-251 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1959.020330119
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  • 7
    Electronic Resource
    Electronic Resource
    Kineties of the polymerization of methyl isopropenyl ketone part. I. Uneatalysed and catalysed (1959)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 29 (1959), S. 48-60 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die thermische Polymerisation von Methylisopropenylketon bei 80°C wurde in Block wie auch in Lösungen von Benzol, Toluol, Äthylbenzol, Cyclohexan und Methyleyclohexan untersucht. Eine Inhibitionszeit wurde nicht festgestellt. Eine Beschleunigung der Polymerisationsgeschwindigkeit tritt dann auf, wenn das Medium heterogen wird und das Polymere ausfällt. Die Reaktionsordnung bezogen auf die Monomerkonzentration war bei allen Lösungsimitteln gleich 2. Die von Benzoylperoxyd initiierte Polymerisation im Block und in Toluollösung folgte im Hinbliek auf die Initiatorkonzentration der bekannten Quadratwurzel-Beziehung. Der δ-Wert (=kt1/2/kp) für Methylisopropenylketon wurden bei 80°C in Block und in Toluollösung bestimmt und blieb merklich konstant. Im Fall der Blockpolymerisation betrug er 35,98.
    Notes: The thermal polymerization of methyl isopropenyl ketone in bulk as well as in solutions of benzene, toluene, ethyl benzene, cyclohexane and methyl cyclohexane has been studied at 80°C. It has been found that there is no inhibition period ivolved. There is an acceleration in rate in those cases where the medium became heterogeneous and the polymer precipitated out. The kinetic order of the reaction with respect to the monomer concentration is found to be 2 in case of all the solvents. Benzoyl peroxide eatalysed polymerization has also been studied in bulk and in solutions of toluene and is found to follow the expected square root relation with respect to the catalyst concentration. The value of δ (=kt1/2/kp) for methyl isopropenyl ketone at 80°C. has been determined in bulk and in solutions of toluene and is found to temain sensibly constant, the value being 35.98 in case of bulk polymerization.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1959.020290105
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  • 8
    Electronic Resource
    Electronic Resource
    Dilute solution properties of poly(m-methyl styrene) (1968)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 111 (1968), S. 36-49 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Viskosimetrische und osmometrische Messungen an Fraktionen von Poly-m-methyl-styrol wurden in Benzol, Cyclohexan und Äthylacetat bei 30, 40 und 50°C ausgeführt. Die K′- und a-Werte der KUHN-HOUWINK-Gleichung werden für diese Lösungsmittel an gegeben. Die Werte des Kettenendenabstandes (r20/M)1/2, der Wechselwirkungskonstante B zwischen Lösungsmittel und Polymerem und der Konformationsparameter σ werden unter Anwendung der Theorien von FLORY-FOX-SCHAEFGEN-ROIG und STOCKMAYER-FIXMAN berechnet. Die Anwendbarkeit der Theorien von FLORY, KURATA und Mitarb., sowie PTITSYN wurde in bezuG auf die Abhängigkeit des Expansionskoeffizienten α vom Molekulargewicht kritisch untersucht, ebenso werden die Werte der thermodynamischen Parameter Θ, Ψ1, x1 und X1 berechnet.
    Notes: Viscometric and osmometric studies have been carried out with fractions of poly(mmethyl styrene) in solutions of benzene, cyclohexane, and ethyl acetate at 30, 40, and 50°C. The values of K′ and ‘a’ in the KUHN-HOUWINK relation have been reported for the above polymer-solvent systems. The values of unperturbed dimension, (r20/M)1/2, solvent polymer interaction constant (B) and conformational parameter (σ) have been computed applying the theories of FLORY-FOX-SCHAEFGEN, KURATA-STOCKMAYER-ROIG, and STOCK-MAYER-FIXMAN. The applicability of the theories of FLORY, KURATA et al., and PTITSYN has been critically analysed from the dependence of the expansion factor (α) on molecular weight. Values of thermodynamic parameters, Θ, Ψ1, x1, and X1, have also been calculated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1968.021110104
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  • 9
    Electronic Resource
    Electronic Resource
    Penultimate unit effect in the copolymerization of alkyl methacrylates and styreneDedicated to Professor Dr. E. HUSEMANN on the occasion of her 60th birthday (1969)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 121 (1969), S. 33-41 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Kinetik der Coplymerisation in Substanz von Styrol mit Äthyl-, Isobutyl- und n-Nonylmethacrylat und das Ausmaß des diffusionskontrollierten Abbruchs in diesen Systemen wurden bei 60°C untersucht. Aus den Kurven für die Abhängigkeit der Polymerisationsgeschwindigkeit von der Zusammensetzung des Polymerisationsansatzes ergibt sich, daß kleine Mengen von Styrol in reinem Alkylmethacrylat die Polymerisationsgeschwindigkeit verkleinern. Der Effekt wird größer mit wachsender Länge der Estergruppe; die Minima der Kurven verschieben sich zu kleineren Styrolkonzentrationen im Ansatz. Die Anwendbarkeit der Theorie von ARLMAN auf die änderung des Φ-Faktors mit der Monomerzusammensetzung wurde geprüft.
    Notes: Kinetics of bulk copolymerization of styrene and alkyl methacrylates, namely, ethyl, isobutyl and n-nonyl methacrylate have been investigated at 60°C, and the extent of diffusion-controlled termination in these systems has also been checked. Rate-composition curves reveal that addition of a small amount of styrene in pure alkyl methacrylates markedly reduces the rate of polymerization, the effect becoming more important as the chain length of the ester group is increased. With higher alkyl methacrylates, the position of the minima in the curves shifts towards a lower concentration of styrene in the feed. The applicability of ARLMAN'S theory on the variation of the Φ-factor with monomer feed composition has been examined.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1969.021210103
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  • 10
    Electronic Resource
    Electronic Resource
    Metal ion amines as initiators in vinyl polymerization (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 21 (1983), S. 329-334 
    Details
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.130210503
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