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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of fluorine-containing graft copolyamides by using condensation-type macromonomers (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 2991-2996 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Fluorine-containing graft copolyamides were prepared from condensation-type macromonomers. Dicarboxyl-terminated poly(perfluoroalkylethyl acrylate) was prepared by radical chain transfer polymerization and copolycondensed with diamines and dicarboxylic acids in the presence of triphenylphosphine and pyridine. Nylon-6 films containing various amounts of the resulting graft copolyamides were obtained by heat pressing. Only 5 wt % of graft copolymers were sufficient to make nylon-6 surfaces water repellent.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1988.080261110
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis, surface accumulation, and micellar properties of amphiphilic block copolymers (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 1883-1890 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Amphiphilic block copolymers, i.e., poly(methyl methacrylate)-b-poly(2-dimethylethylammoniumethyl methacrylate), were synthesized by the reaction between two prepolymers. Carboxyl-terminated poly(methyl methacrylate) and hydroxyl-terminated poly(2-dimethylaminoethyl methacrylate) were prepared by radical polymerization of the corresponding monomers in the presence of thioglycolic acid and 2-mercaptoethanol as a chain transfer agent, respectively. Two condensation methods, i.e., DCC and the acid chloride method, were used for the reactions of these prepolymers. The subsequent quarternization produced the amphiphilic block copolymers. Surface property of poly(methyl methacrylate) films containing this amphiphilic block copolymer was examined by measuring contact angles for water. The addition of only 0.5 wt% of the block copolymer was sufficient to make poly(methyl methacrylate) surfaces hydrophilic. The block copolymer formed a polymeric micelle in acetone-water mixed solvent.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270609
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  • 3
    Electronic Resource
    Electronic Resource
    Surface and solution properties of polysiloxane-poly(methyl methacrylate) graft copolymer (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 1907-1913 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A polysiloxane-poly(methyl methacrylate) (PMMA) graft copolymer was prepared by hydrosilylation reaction between a Si—H containing polysiloxane and an allyl-terminated PMMA. The obtained graft copolymer was blended with PMMA homopolymer. The addition of only 0.01 wt % of graft copolymer was sufficient to make PMMA surfaces hydrophobic. In acetone-cyclohexane mixed solvent, the graft copolymer formed a polymeric micelle by the aggregation of PMMA branches.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270612
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of aromatic dicarboxyl-terminated poly(methyl methacrylate) macromonomers (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 2007-2014 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydroxyl- or amino-terminated prepolymers were prepared by radical polymerization of methyl methacrylate in the presence of 2-mercaptoethanol or 2-aminoethanethiol hydrochloride, respectively, as a chain transfer agent. The resulting prepolymers were subjected to react with trimellitic anhydride to form aromatic dicarboxyl-terminated poly(methyl methacrylate)s. These condensation-type macromonomers and terephthalic acid were condensed with bisphenol-A to produce polyester-poly(methyl methacrylate) graft copolymers.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270621
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis of crown ether-terminated poly(methyl methacrylate) by radical chain transfer polymerization (1990)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 28 (1990), S. 59-65 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mercapto-16-crown-5 was prepared starting from tetraethyleneglycol and 3-chloro-2-chloromethyl-1-propene. Radical polymerization of methyl methacrylate was carried out in the presence of mercapto-16-crown-5 as a chain transfer agent to give crown ether-terminated poly(methyl methacrylate). The end crown group was characterized by IR and 1H-NMR spectra. Sodium cation was selectively extracted by this crown-containing polymer. The molecular weight of the obtained polymer had influence upon the ability of extraction of sodium cation.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1990.080280104
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis of segmented copolyamides by using telechelic prepolymers (1984)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 185 (1984), S. 2077-2087 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polyamide-polystyrene and polyamide-poly(oxyethylene) segmented copolymers 6a, b of well-defined structure and composition were synthesized using telechelic prepolymers. α,ω-Dicarboxyl-terminated polystyrene 2 was prepared by radical polymerization of styrene initiated by 4,4′-azobis(4-cyanovaleric acid) (1). α,ω-Dicarboxyl-terminated poly(oxyethylene) 3 was prepared by the reaction of commercially available hydroxyl-terminated poly(oxyethylene) with excess succinic anhydride. These telechelic prepolymers were condensed with hexamethylenediamine in a 1:1 mole ratio together with nylon-6,6 salt using the triphenyl phosphite/pyridine system. Similarly, α,ω-diamino-terminated polystyrene 5 was prepared and condensed with adipic acid and nylon-6,6 salt. The segmented copolymers 6a and 6b were characterized by their 1H NMR and IR spectra.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1984.021851003
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis of polysiloxane graft copolymers by hydrosilylation reactionsDedicated to Prof. J. E. McGrath on the occasion of his 50th birthday (1985)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 186 (1985), S. 1203-1211 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polysiloxane-poly(methyl methacrylate) and polysiloxane-polystyrene graft copolymers of well-defined structure and composition were synthesized by hydrosilylation. Polysiloxanes with Si—H bonds were prepared by equilibrium ring-opening polymerization of cyclic siloxane oligomers catalyzed by trifluoroacetic acid. Molecular weight and Si—H group content were controlled by the feed ratio. Allyl-terminated poly(methyl methacrylate) and polystyrene were prepared by the reaction of carboxyl-terminated prepolymers with allyl glycidyl ether. The hydrosilylation reactions of Si—H containing polysiloxanes with these allyl-terminated polymers produced tailor-made graft copolymers, which were characterized by their 1H NMR and IR spectra.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1985.021860609
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  • 8
    Electronic Resource
    Electronic Resource
    Metal-induced soluble bending structure of polyazomethine having a tetradentate ligand in the main chain (1998)
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 19 (1998), S. 523-525 
    Details
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polymer 3 having a tetradentate Schiff's base derivative of β-diketone was prepared by polycondensation of a bis(β-diketone) monomer (1) with 1,2-diaminocyclohexane (2). A polymer metal chelate in which all coordination sites of 3 were occupied with copper(II) ions was obtained. The polymer chelate was soluble in CHCl3, CH2Cl2, N,N-dimethylformamide, and tetrahydrofuran. Gel-permeation chromatography measurements showed that the complex formation with copper(II) ions induced changes in the conformation of 3 in solution.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 9
    Electronic Resource
    Electronic Resource
    Synthesis of a star-shaped polymer via coordination of ester-linked pyridyl-terminated poly(oxyethylene) with ru(II) (1997)
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 18 (1997), S. 1025-1032 
    Details
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The star-shaped polymer with trans-tetrapyridyl complex of Ru(II) as a core was prepared by complexation of ester-linked pyridyl-terminated poly(oxyethylene) (M̄n = 2000) with a Ru5Cl122- cluster. The unimodal peak of the star-shaped polymer in the gel-permeation chromatogram was shifted to a higher molecular weight region than that of the starting prepolymer. The electron-withdrawing ester substituent in para position of the pyridine ring shifted the metal-to-ligand charge transfer (MLCT) band into the visible region.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1997.030181205
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal stability of blends of poly(vinyl chloride) with polyester elastomer (1995)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 226 (1995), S. 1-12 
    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 Blenden mit einem Polyester-Elastomeren (PETE) wurde die thermische Stabilität von PVC verbessert. Dies wird auf die Reaktion zwischen der Esterkomponente des PETE und dem aus PVC eliminierten Chlorwasserstoff zurückgeführt. Die besten Ergebnisse wurden bei einem PVC/PETE-Gewichtsverhältnis von 100:4 erhalten. Aus DSC-Messungen folgt, daß die Komponenten in getrennten Phasen vorliegen. Mit zunehmendem Anteil an PETE nehmen die Aufschmelzzeit und das Drehmoment während der Verarbeitung der Blends zu, ebenso die Schlagzähigkeit, während die Zugfestigkeit sinkt.
    Notes: The thermal stability of poly(vinyl chloride) (PVC) under air atmosphere was improved by blending with PETE (polyester elastomer). Its enhanced stability could be explained by a reaction between the ester component of PETE and HCl from dehydrochlorination of PVC, which was identified by IR- and 1H-NMR spectroscopy. The best result of thermal stability was shown at a composition of 100 parts of PVC with 4 parts of PETE. By surveys of glass transition temperatures, it was found that all PVC/PETE blends were ununiformly distributed. During processing, the fusion time and torque at fusion decreased as the quantity of PETE increased. The mechanical properties of the blends were also changed; as the quantity of PETE increased, tensile strength of the blends decreased, while impact strength increased.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1995.052260101
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