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  • 1
    Electronic Resource
    Electronic Resource
    3- and 4-dimethylaminobenzyl acrylate and methacrylate and their polymers (1978)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 179 (1978), S. 2593-2601 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 3- and 4-dimethylaminobenzyl acrylates (3 and 4) and methacrylates (1 and 2) were prepared and their densities, IR and NMR spectra are recorded. In order to evaluate their reactivity towards benzoyl peroxide, the rate constants of the reaction of benzoyl peroxide with 3- and 4-dimethylaminobenzyl alcohols and 3- and 4-dimethylaminobenzyl acetates were determined. The reactivity of the esters prepared in this work appeared to be weaker than that of an N-aryl-N-alkylaminoalkyl methacrylate. The blocks of homopolymers of these esters and of their copolymers (mole ratio 1:1) with styrene and methyl methacrylate are crosslinked. Both homopolymers and copolymers of 1 and 3 are more stable in polar solvents and on heating than polymers of 2 and 4. The copolymerization parameters of 1 and 2 with styrene are close to the copolymerization parameters of methyl methacrylate with styrene.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1978.021791101
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Internal mobility of PMMA in concentrated CDCl3 solutions, 1. 1H NMR spectra (1981)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 182 (1981), S. 3169-3176 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Measurements of the second moment and analysis of the derivative shape of 1H NMR spectra of PMMA have shown that in CDCl3 solutions containing 60% (w/w) or more of polymer, the internal mobility of PMMA is similar to the mobility of the pure polymer. The main chain is rigid on the NMR scale, and only CH3 groups are mobile. The motion of CH2 groups, representing the segmental mobility of the backbone chain, becomes appreciable on the NMR scale at concentreations of 60-50%, depending on the temperature. Measurements of 1H MAR-NMR spectra of solutions containing 30% or more of polymer indicate spatial anisotropy of internal motions of PMMA. This spatial anisotropy is probably due to intermolecular interactions of ester groups, similarly as in the gels of the PMMA stereocomplex.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1981.021821123
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  • 3
    Electronic Resource
    Electronic Resource
    Internal mobility of PMMA in concentrated CDCl3 solutions, 2Part 1: cf.12.. 13C NMR spectra (1981)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 182 (1981), S. 3177-3184 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The 13C NMR relaxation parameters (T1, line widths and NOE factors) were measured and analyzed for two samples of atactic poly(methyl methacrylate) (PMMA) of molecular weight Mw 4,20·104 and 1,76.106 in CDCl3 solutions in the concentration range 11 to 54% (by weight) of polymer, at 297 and 323 K. By this analysis it was found that the backbone segmental motion of PMMA is spatially isotropic in the whole measured concentration range; the motion of the α-CH3 group may be approximated by the double reorientation model; the motion of the ester CH3 group can be approximated by the isotropic model only at concentrations lower than 12%; in more concentrated solutions, a satisfactory approximation is obtained neither by the isotropic, nor by the double reorientation models. The reasons of this behaviour are discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1981.021821124
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  • 4
    Electronic Resource
    Electronic Resource
    Conformation and electrical conductivity of poly(γ-methyl-L(LD)-glutamates) reticulate-doped with 1,3-dimethylimidazolium-7,7,8,8-tetracyano-p-quinodimethane complex salt (1991)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 190 (1991), S. 201-213 
    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: Poly(γ-methyl-L-glutamat) (PMLGA) und Poly(γ-methyl-LD-glutamat) (PMLDGA, 1:1) mit unterschiedlicher Konformation wurden mit einem 1,3-Dimethylimidazolium-TCNQ-Komplexsalz dotiert. Der wärmeinduzierte Konformationsübergang von der α-Helix zur Spiralform (PMLGA) bzw. zur β- und Spiralform (PMLDGA) wurde in Chlorbenzol und o-Dichlorbenzol bei Temperaturen zwischen 70 und 150°C durchgeführt. Die Leitfähigkeit der bei 70°C hergestellten und wärmebehandelten Polyglutamat-Composite ist um etwa zwei Zehnerpotenzen besser als die der bei Raumtemperatur gegossenen, thermisch nicht behandelten Filme. Die Leitfähigkeit des leitfähigsten dotierten PMLGA-Films ist um mehr als vier Zehnerpotenzen größer als die des zu Tabletten gepreßten 1,3-Dimethylimidazolium-TCNQ-Komplexsalzes.
    Notes: Polymeric composites were prepared by reticulate doping of poly(γ-methyl-L-glutamate) (PMLGA) and poly(γ-methyl-LD-glutamate) (PMLDGA, 1 : 1) having different conformation forms with 1,3-dimethylimidazolium-TCNQ complex salt. The heat induced α-helix to coil transition in PMLGA and α-helix to β-form and coil transition in PMLDGA were carried out in chlorobenzene and o-dichlorobenzene at temperatures between 70 and 150°C. The conductivity of polyglutamate composites thermally treated and prepared at 70°C is higher by approximately two orders of magnitude than that of thermally not treated films cast at ambient temperature. The conductivity of the most conductive reticulate-doped PMLGA film is higher by more than four orders of magnitude than that of the 1,3-dimethylimidazolium-TCNQ complex salt in pressed pellets.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1991.051900114
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  • 5
    Electronic Resource
    Electronic Resource
    The diels-alder reaction and copolymerization of halogenated N-phenylmaleimides with dienes (1986)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 144 (1986), S. 207-218 
    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: Der Verlauf der Diels-Alder-Reaktion von N-(2,4,6-Tribromphenyl)maleinimid (I) mit 2-Methyl-1,3-Butadien (Ip) und von N-(2,4,6-Trichlorphenyl)maleinimid (II) mit Ip, 2-Chlor-1,3-Butadien (Cp) und Butadien (Bt) in CHCl3 wurde untersucht. Bei der Addition von I-Ip wurde die Reaktionsordung in bezug auf beide Komponenten bestimmt und die Aktivierungsenergie berechnet. Die Produkte der Diels-Alder-Reaktion wurden durch Elementaranalyse, 1H- und 13C-NMR-Spektroskopie, spezifische Volumenkontraktionen, Schmelzpunkte, Löslichkeiten und Polymerisationsfähigkeiten charakterisiert. Es wurden die Copolymeren von I und II mit Ip, Cp, Bt und Isobuten (Ib) hergestellt und ihre Zusammensetzung bestimmt. Copolymerisation und parallel verlaufende Diels-Alder-Addition von I-Ip, II-Ip wurden untersucht und die Teilnahme der beiden Reaktionen an der Gesamtreaktion diskutiert.
    Notes: The course of the Diels-Alder reaction of N-(2,4,6-tri-bromophenyl)maleimide (I) with 2-methyl-1,3-butadiene (Ip) and of N-(2,4,6-trichlorophenyl)maleimide (II) with Ip, 2-chloro-1,3-butadiene (Cp), and butadiene (Bt) in CHCl3 was investigated. For the I-Ip addition, the reaction order was determined with respect to both components, and the activation energy was calculated. The Diels-Alder adducts thus obtained were characterized by elementary analysis, by 1H- and 13C-NMR spectra, specific volume contractions, melting points, solubilities, and polymerization abilities. Copolymers of I and II with Ip, Cp, Bt, and 2-methylpropene (Ib) were prepared, and their composition was determined. The copolymerization and Diels-Alder addition of I-Ip and II-Ip occurring in parallel were investigated, and the participation of these two processes in the total reaction was discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1986.051440118
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  • 6
    Electronic Resource
    Electronic Resource
    Preparation and characteristics of 1,2,2,2-tetrachloroethyl acrylate, 1,2,2,2-tetrachloroethyl methacrylate, and their polymers (1972)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 10 (1972), S. 3125-3130 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; 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/pol.1972.170101031
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    Paper (German National Licenses)
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