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  • 1
    Electronic Resource
    Electronic Resource
    Thermal stability of castor oil-based interpenetrating polymer networks
    Amsterdam : Elsevier
    Thermochimica Acta 228 (1993), S. 213-218 
    Details
    ISSN: 0040-6031
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0040-6031(93)80290-Q
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  • 2
    Electronic Resource
    Electronic Resource
    New organic polymers, II. Synthesis and characterization of poly[3,3′-(6,6′-bis-(2-substituted-4-quinazolonediyl)) alkylene]s (1981)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 93 (1981), S. 199-209 
    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[3,3′-(6,6′-bis(2-substituierte-4-quinazolondiyl))alkylene] wurden durch Reaktion von 6,6′-Bis[2-R-3,1,4-benzoxazinon] (R = Me, Ph und —CH2Ph) mit aliphatischen Diaminen H2N(CH2)nNH2 mit n = 0, 2, 3, 4, 6, 8 in m-Kresol hergestellt. Diese Polymeren sind unlöslich in allen herkömmlichen organischen Lösungsmitteln, jedoch halbwegs löslich in konzentrierter Schwefelsäure. Die Polymeren wurden durch IR-spektroskopische Untersuchung, Viskositätsmessungen und thermische Analyse charakterisiert. Die IR-Spektren der Polymerproben wurden mit jenen ihrer Modell-verbindungen verglichen.
    Notes: Poly[3,3′-(6,6′-bis-(2-substituted-4-quinazolonediyl))alkylene]s have been synthesized by reacting 6,6′-bis-(2-R-3,1,4-benzoxazinone) (R = Me, Ph, and —CH2Ph) with aliphatic diamines H2N(CH2)nNH2 with n = 0, 2, 3, 4, 6 and 8 in m-cresol. These polymers are insoluble in all common organic solvents but are fairly soluble in concentrated sulfuric acid. The polymers were characterized by IR spectral study, viscometric measurements and thermal analysis. IR spectra of the polymer samples have been compared with those of their model compounds.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1981.050930117
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  • 3
    Electronic Resource
    Electronic Resource
    New organic polymers, I. Synthesis and characterization of poly Schiff bases from benzidine-3,3′-dicarboxylic acid (1981)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 93 (1981), S. 189-198 
    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: Thermisch beständige und halbleitende Polymere wurden durch Kondensation von Benzidin-3,3′-dicarbonsäure mit Dicarbonylverbindungen wie Glyoxal, Cyclohexan-1,4-dion, 4,4′-Diacetyldiphenylether und Benzil bei unterschiedlichen experimentellen Bedingungen hergestellt. Diese Poly-Schiff-Basen sind in herkömmlichen organischen Lösungsmitteln unlöslich. Sie wurden mittels IR- und Viskositätsuntersuchungen, thermischer Analyse und Untersuchung der elektrischen Eigenschaften bei verschiedenen Temperaturen charakterisiert. Die Temperaturabhängigkeit der elektrischen Leitfähigkeit σ ergab eine Bestätigung der empirischen Beziehung: \documentclass{article}\pagestyle{empty}\begin{document}$ \sigma = \sigma _0 \cdot {\rm e}^{{{ - {\rm E}} \mathord{\left/ {\vphantom {{ - {\rm E}} {{\rm kT}}}} \right. \kern-\nulldelimiterspace} {{\rm kT}}}} $\end{document}
    Notes: Thermally stable and semiconducting polymers are synthesized by condensing benzidine-3,3′-dicarboxylic acid (BDC), with dicarbonyl compounds like glyoxal, cyclohexane-1,4-dione, 4,4′-diacetyl diphenyl ether and benzil under different experimental conditions. These poly Schiff bases are insoluble in common organic solvents. They are characterized by IR- and viscosity studies, thermal analysis, and the study of electrical properties at various temperatures. Variation of the electrical conductivity, σ, with temperature was found to confirm with the empirical relation: \documentclass{article}\pagestyle{empty}\begin{document}$ \sigma = \sigma _0 \cdot {\rm e}^{{{ - {\rm E}} \mathord{\left/ {\vphantom {{ - {\rm E}} {{\rm kT}}}} \right. \kern-\nulldelimiterspace} {{\rm kT}}}} $\end{document}
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1981.050930116
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  • 4
    Electronic Resource
    Electronic Resource
    New organic polymers, III. Synthesis and characterization of poly(amide acid)s from benzidine-3,3′-dicarboxylic acid (1981)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 95 (1981), S. 213-221 
    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: Polyamidsäuren wurden durch Kondensation von Benzidin-3,3′-dicarbonsäure (BDC) mit verschiedenen aliphatischen Diestern: EtOOC—R—COOEt mit R = (CH2)n, wobei n = 2, 4, 5, 6, 7, 8 und R = cis- und trans-CH=CH—, unter geeigneten experimentellen Bedingungen hergestellt. Diese Polymeren sind in allen herkömmlichen organischen Lösungsmitteln unlöslich, jedoch teilweise löslich in konzentrierter Schwefelsäure. Die Polymere wurden durch IR-spektroskopische Untersuchung, Viskositätsmessungen und thermische Analyse charakterisiert.
    Notes: Poly(amide acid)s have been synthesized by condensing benzidine-3,3′-dicarboxylic acid (BDC) with various aliphatic diesters EtOOC—R—COOEt with R = (CH2)n where n = 2, 4, 5, 6, 7, 8 and R = cis and trans —CH=CH—, under suitable experimental conditions. These polymers are insoluble in all common organic solvents but are fairly soluble in concentrated sulfuric acid. The polymers were characterized by IR spectral study, viscometric measurements, and thermal analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1981.050950116
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  • 5
    Electronic Resource
    Electronic Resource
    A review of kinetic studies on the formation of interpenetrating polymer networks (1996)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 7 (1996), S. 221-233 
    Details
    ISSN: 1042-7147
    Keywords: IPN ; kinetics ; simultaneity ; trommsdorff effect ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Interpenetrating polymer networks (IPNs) are unique alloys of crosslinked polymers. This article reviews the studies on kinetic effects involved in IPN formation. Several investigators have studied the effect of kinetics of curing reactions on the morphology and properties of IPNs. It was found, in general, that the faster the rates of the respective chain extension and crosslinking reactions are and the closer they are to simultaneity, the more homogeneous are the IPNs. Other investigations revealed that the individual components sometimes can polymerize more rapidly in the IPN than alone, due to a “solvent effect” of the IPN. Effects of changing reaction variables, such as NCO/OH ratio, composition activators and temperature were used to study reaction kinetics as well as phase morphology by the Fourier transform infrared technique. Thermochemical techniques have been utilized to study the kinetics of IPN formation which influence phase separation. Small-angle X-ray scattering and small-angle neutron scattering techniques were used to estimate the extent of microheterogeneity of the phase domains in a study of the kinetics of phase separation in the IPNs.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 6
    Electronic Resource
    Electronic Resource
    Kinetic studies of nucleophilic substitution Reactions of β- and α-Naphthacyl Bromides with Sodium Benzoates in 50% aqueous ethanol (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 166-168 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Kinetische Studien über nucleophile Substitutionsreaktionen von α- und β- Naphthacylbromiden mit Natriumbenzoat in wäßrigem Äthanol
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200122
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