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  • 1
    Electronic Resource
    Electronic Resource
    α-Halogenated carboxylic acids and their corresponding zinc salts in the living polymerization of isobutyl vinyl ether (1990)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 11 (1990), S. 525-533 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1990.030111102
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Rigid rods with flexible side chains  -  A route to molecular reinforcement? (1989)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 190 (1989), S. 3295-3316 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Liquid-crystalline main-chain polyesters with polystyrene side chains of different length and number per main chain were synthesized using aromatic hydroxyfunctional polystyrene (PS) macromonomers, terephthalic acid derivatives and tert-butylhydroquinone as co-diol. The molecular weight of the polystyrene side chain was varied in the range from 1000 to 20000. The influence of this novel type of substituent on the solubility, thermal behaviour and miscibility with PS as a flexible matrix polymer is discussed. The properties of the new compounds are compared to those of the respective homopolyester. The graft copolyesters are, depending on the characteristics of the polymeric substituent, soluble in common organic solvents and their thermal transition points are lowered compared to the homopolyester. Compared to blends of the homopolyester, the improvement of miscibility of the polymer-substituted rigid rods with PS as an example for a flexible matrix polymer can be valued as a step to molecular reinforcement.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1989.021901226
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation and determination of the structure of high-performance polymer blends by small-angle neutron scattering (1995)
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 16 (1995), S. 771-778 
    Details
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Amorphous blends from a deuterated polyaryletherketone and a polyetherimide have been prepared and investigated by neutron scattering. The used components differ remarkably in their structure and their solution properties. The blends on the other hand are combinatorial mixtures: the scattering quantity φ1φ2/S(q) is independent of the composition of the blends if the polymer chains have the same length.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1995.030161010
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of polystyrene macromonomers for use in polycondensation reactions (1988)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 189 (1988), S. 777-789 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The preparation of aromatic macromonomers with hydroxyl functions was achieved by termination of living polystyrene (PSLi) upon addition of 2,5-dimethoxybenzyl bromide (2) or 1,1-bis(4-methoxyphenyl)ethylene (16). Ether cleavage with boron tribromide resulted in the formation of the de-protected macromonomers 15 and 17. Side reactions occurring in the functionalisation reaction with 2 were investigated by means of a respective model reaction. The formation of side products could be suppressed by reacting PSLi with 1,1-diphenylethylene prior to functionalisation with 2. The macromonomers were characterized by GPC, UV, and FT-IR spectroscopy.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1988.021890409
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis of poly(methyl methacrylate) macromonomers with phenolic functionality by group transfer polymerization and their use in polycondensation reactionsContribution No. 5715. (1991)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 192 (1991), S. 2463-2478 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Methyl 1-trimethylsiloxy-2-[2,5-bis(trimethylsiloxy)phenyl]vinyl ether (6) was used as the initiator for the group transfer polymerization (GTP) of methyl methacrylate (MMA) to give macromonomers with aromatic hydroxyl functions. Quantitative removal of the silyl-protective groups was achieved by acidic or fluoride-catalyzed cleavage to give the deprotected macromonomer 9. The reactivity of this macromonomer in polycondensation reactions was shown by the synthesis of a liquid-crystalline main-chain polyester with poly(methyl methacrylate) (PMMA) side chains (PES-graft-PMMA) (15) and a 4,4′-isopropylidenediphenol-based polycarbonate (PC-graft-PMMA) (19).
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1991.021921023
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis of poly(bisphenol-a carbonate)-graft-polystyrene via the macromonomer technique (1993)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 194 (1993), S. 1627-1638 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The synthesis of poly(bisphenol-A carbonate)-graft-polystyrene with grafts of definite, predictable, nearly identical length was achieved using the macromonomer technique, i.e., copolycondensation of polystyrene macromonomers, carrying aromatic hydroxyl function, with bisphenol-A and triphosgene in pyridine/methylene chloride solution. The incorporation of the macromonomer into the polycarbonate backbone was examined both qualitatively and quantitatively. The copolycarbonate show  -  in the contrast to polystyrene/polycarbonate blends of comparable molecular weights and composition  -  only one glass transition temperature, which proved to be dependent on the polystyrene content, following the Fox equation. The title compounds exhibit reduced stress-induced birefringence compared to polycarbonate.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1993.021940610
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    Paper (German National Licenses)
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