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  • 1
    Electronic Resource
    Electronic Resource
    Cationic polyelectrolytes (1991)
    Springer
    Polymer bulletin 27 (1991), S. 17-24 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Synopsis The aminolysis-hydrolysis of the nitrile groups of PAN with asymmetrical diamines as H2N-(CH2)m-NR2 was investigatied by IR spectroscopy (qualitative and quantitative) and elemental analyses. IR quantitative spectroscopy is an adequately proved method for investigation of the extent of transformation. The amine reactivity depends on the distance between the two amine groups and the size of the alkyl substituents on the tertiary amine. The data support the reaction mechanism by the nucleophilic attack of the primary amine on the two neighbouring nitrile groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296319
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  • 2
    Electronic Resource
    Electronic Resource
    Chloromethylated polystyrene in dilute solution (1982)
    Springer
    Polymer bulletin 7 (1982), S. 473-480 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The macromolecular chain conformation of chloro-methylated polystyrene and the effect of excluded volume have been studied by light scattering measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254373
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  • 3
    Electronic Resource
    Electronic Resource
    Study of some flocculating processes with cationic polyelectrolytes (1994)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 220 (1994), S. 11-19 
    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 Flockenbildungswirksamkeit von zwei kationischen Polyelektrolyten mit quaternären Ammoniumsalzen in der Kette und verschiedene Verzweigungsgraden wurde an einer Bentonit-Suspension untersucht und mit der von Polyacrylamid verglichen. Das kationische Polymere mit einem kleineren Verzweigungsgrad wirkt ähnlich wie Polyacrylamid und führt zu einer Entfernung von 100% der Suspensionspartikel. Im Fall des kationischen Polymeren mit einem höheren Verzweigungsgrad wird eine Erhöhung der Stabilität der Suspension bei sehr kleinen Konzentrationen (〉0,2 mg/L) beobachtet. In gleicher Weise wurde die Flockenbildungswirksamkeit für kationische Polymer/Polyacrylamid-Mischungen studiert.
    Notes: The flocculating efficiency of two cationic polyelectrolytes with quaternary ammonium salt groups in the main chain, with different branching degrees, on a bentonitic clay suspension, in comparison with polyacrylamide (PAM) was followed. The cationic polymer with a smaller branching degree operated similar to PAM. In both cases a purification of 100% was achieved. When the cationic polymer with a higher branching degree was used, a stabilization effect on the suspension was observed. The flocculating activity of the mixtures of the cationic polymer and polyacrylamide was also studied.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1994.052200102
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  • 4
    Electronic Resource
    Electronic Resource
    Ion exchanger resins, I. Anion exchangers with tertiary amine groups on poly(acrylonitrile-co-divinylbenzene) networks (1992)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 200 (1992), S. 27-36 
    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: Makroporöse Acrylnitril-Divinylbenzol-Copolymere wurden in Gegenwart von 2-Ethyl-1-hexano1 oder Toluol als Verdünnungsmittel hergestellt und bezüglich des Acrylnitrilgehalts und der Struktur charakterisiert. Die Proben mit dem geringsten Homopolymeranteil wurden durch Aminolyse-Hydrolyse der Nitrilgruppen mit N,N-Dialkylaminoalkylaminen in schwach basische Anionenaustauscher transformiert. Aus den Austauschkapazitäten und IR-spektroskopischen Untersuchungen geht hervor, daß die Reaktivität der asymmetrischen Diamine von der Nucleophilie der primären Amingruppe abhängt.
    Notes: Macroporous copolymers of poly(acrylonitrile-co-divinylbenzene) were synthesized in the presence of 2-ethyl-1-hexanol (2EH) and toluene as diluents. The copolymers were characterized by acrylonitrile content and from morphological point of view. Samples with a minimum content of homopolymer were transformed into weak base anion exchangers by the aminolysis-hydrolysis reaction of the nitrile groups with N,N-dialkylaminoalkylamines. The reactions were investigated by the exchange capacity variation and IR-spectral analysis. It was emphasized that the reactivity of asymmetrical diamines depends on the nucleophilicity of the primary amine group.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1992.052000103
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  • 5
    Electronic Resource
    Electronic Resource
    Cationic polyelectrolytes, XIIPart. XI cf.8.. PEG-precursor for water-soluble cationic polymers with tertiary n-atoms in the main chain (1994)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 215 (1994), S. 107-119 
    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: Durch Polyaddition von Polyethylenglykol (PEG) Oligoglycidylethern (Mn (PEG): 396,587, 1437 und 3554) mit asymmetrischen Diaminen, wie N,N-Dimethylund N,N-Diethyl-1,3-diaminopropan, wurden wasserläosliche kationische Polymere erhalten. Die Eigenschaften der kationischen Polymeren sind vom urspräunglichen PEG-Molekulargewicht und der Diaminreaktivitäat abhäangig. PEG mit Mn = 396 zeigt das beste Verhalten. In verdäunnten wäassrigen Läosungen und in wäassrigen 2M NaCl-Läosungen der Polymeren wurde das Polyelektrolytverhalten veranschaulicht. Die Gegenwart der PEG Kette bestimmt das Polyelektrolytverhalten in den 2M NaCl Läosungen.
    Notes: Water-soluble cationic polymers were obtained by polyaddition of poly(ethylene glycol) (PEG) diglycidylethers (M̄n of PEG were 396, 587, 1437 and 3554, resp.) with asymmetrical diamines such as N,N-dimethyl-1,3-diaminopropane and N,N-diethyl-1,3-diaminopropane. The cationic polymer properties depend on the PEG initial molecular weight and on the diamine reactivity too. PEG with M̄n = 396 had the best behaviour in these reactions. The polyelectrolyte feature of cationic polymers was emphasized both in dilute aqueous solutions and in 2M aqueous NaCl solutions. The polyelectrolyte behaviour in 2M aqueous NaCl solution is determined by the PEG chain presence.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1994.052150109
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  • 6
    Electronic Resource
    Electronic Resource
    Interaction of the low-molecular weight salts with cationic polyelectrolytes (1997)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 35 (1997), S. 2571-2581 
    Details
    ISSN: 0887-6266
    Keywords: cationic polyelectrolytes ; counterion binding ; viscosity ; conductivity ; salts ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The interaction of several mono-, di-, and trivalent anions with cationic polyelectrolytes having different contents in N,N-dimethyl-2-hydroxypropylen ammonium chloride units (polymer A) or tertiary amine N-atoms and PEG (polymer PEGA) in the main chain was studied by viscosimetric and conductometric measurements. Both methods have shown a stronger interaction for tri- and bi- than for univalent counterions. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 2571-2581, 1997
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Interactions of di- and trivalent anionic azo dyes with polycations of integral type (1997)
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 18 (1997), S. 541-545 
    Details
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The spectral changes of Crystal Ponceau 6R and Ponceau 4R induced by the interaction with polycations having N,N-dimethyl-2-hydroxypropane-1,3-diylammonium chloride units in the main chain were followed. The stoichiometry of the polycation-dye complex related to the dye structure was elaborated by UV-VIS spectrophotometry and viscosimetric measurements. Formation of a tricomponent complex between the polycation/dye complex and poly(sodium acrylate) was also revealed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1997.030180702
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  • 8
    Electronic Resource
    Electronic Resource
    Cationic polyelectrolytes. V. On macromolecular chain conformational state during amination reactions of CMPS (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 1267-1281 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The macromolecular chain conformational state during the amination of chloromethylated polystyrene (CMPS) with two aliphatic amines, namely methyl(2-hydroxyethyl)amine (MHEA) and N,N-dimethyl(2-hydroxypropyl)amine (DM2HPA), has been studied. Viscosimetric and light scattering measurements were performed during reactions in binary solvent mixtures. The observed kinetic deviations have been related with the conformational transformations of the macromolecular chain.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230502
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  • 9
    Electronic Resource
    Electronic Resource
    Chloromethylated polystyrene reaction with tris(2-hydroxyethyl)amine. I. Crosslinked polymers prepared by chloromethylated polystyrene with tris(2-hydroxyethyl)amine (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 18 (1980), S. 449-454 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A multifunctional crosslinked polymer resulted from a chloromethylated polystyrene reaction with tris(2-hydroxyethyl)amine. A benzyl chloride reaction (chosen as a structural unit model) with tris(2-hydroxyethyl)amine was investigated to explain the reasons for the crosslinking. Amino-ethers and tris(2-hydroxyethyl)amine hydrochloride in addition to ammonium quaternary salt were isolated from this reaction. The formation of amino-ethers proved that an ammonium quaternary salt rearrangement also takes place during the quaternization reaction. This rearrangement leads to chloromethylated polystyrene during its reaction with tris(2-hydroxyethyl)amine.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.170180205
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  • 10
    Electronic Resource
    Electronic Resource
    Cationic polyelectrolytes. I. Soluble polymers prepared from reaction of chloromethylated polystyrene with tris(2-hydroxythyl)amine (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 18 (1980), S. 455-465 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of chloromethylated polystyrene with tris(2-hydroxyethyl)amine in N,N-dimethylformamide is described for the conditions to prepare soluble reaction products. The groups of the quaternary ammonium salt, which appear in the first stage of the reaction, transpose to the amino-ether groups. The reaction was followed by elementary analysis, IR and 1H-NMR spectra, and viscosimetric measurements for nondialyzed and dialyzed samples. The presence of the tertiary amine groups on obtained polymers was also shown by titration. The polymers from the reaction of chloromethylated polystyrene with tris(2-hydroxyethyl)amine reacted easily with benzyl chloride.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.170180206
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