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  • 1
    Electronic Resource
    Electronic Resource
    Miscibility of poly(styrene-co-vinyl phenol) with poly(ɛ-caprolactone) (1993)
    Springer
    Polymer bulletin 30 (1993), S. 461-467 
    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 Poly(styrene-co-vinyl phenol) (STVPh)/poly(ɛ-caprolactone)(PCL) blends showed enhanced miscibility over polystyrene/PCL blend, and showed single glass transition temperature when the contents of vinyl phenol (VPh) in copolymer were higher than 10 wt % (maximum content of VPh in STVPh used in this study was 20 wt%). STVPh 4, STVPh 7, STVPh 10 (4, 7, 10 were VPh wt%)/PCL blends showed cloud points on heating for miscible blend system, and this phase separation was reversible on cooling. From melting point depression of PCL, interaction parameter, B. for miscible STVPh 12/PCL blend system was evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00338481
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  • 2
    Electronic Resource
    Electronic Resource
    Miscibility of polyamide-6,6 with aromatic polyamides (1996)
    Springer
    Polymer bulletin 37 (1996), S. 361-367 
    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 polyamides with aromatic rings in the main chain were synthesized by the solution polymerization of 4,4′-diphenylmethane diisocyanate and aliphatic dicarboxylic acid in the presence of catalyst. The thermal properties and the miscibility behaviours with polyamide-6,6 of these aromatic polyamides were studied. The aromatic polyamides synthesized with one kind of dicarboxylic acid had typical thermal properties of crystalline polymers, whereas those synthesized with the mixtures of dicarboxylic acids were not easily crystallized. The observed miscibility behaviours showed some differences from those predicted by binary interaction model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318069
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  • 3
    Electronic Resource
    Electronic Resource
    Copolymerisation von Itaconsäuredialkylestern mit Styrol (1963)
    Springer
    Colloid & polymer science 188 (1963), S. 1-4 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary The radical initiated copolymerization of six different dialkyl esters of itaconic acid with styrene was investigated at 60 °C. The composition of the copolymers was determined by UV-spectroscopy; theQ- ande-values according toAlfrey andPrice were calculated and discussed.
    Notes: Zusammenfassung Die radikalische Copolymerisation von sechs verschiedenen Itaconsäuredialkylestern mit Styrol bei 60 °C wird untersucht. Aus den UV-spektroskopisch ermittelten Zusammensetzungen der Copolymeren werden die Copolymerisationsparameter und dieQ- unde-Werte nachAlfrey undPrice berechnet und diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01499594
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  • 4
    Electronic Resource
    Electronic Resource
    Miscibility of polyarylate/phenoxy/poly(butyleneterephthalate) ternary blends (1991)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 192 (1991), S. 133-144 
    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: Das Phasen- und Mischbarkeitsverhalten der binären und ternären Polymermischungen von Polyarylat (PAR), Phenoxid und Poly(butylenterephthalat) (PBT) wurde untersucht. Die Mischungen wurden durch Ausfällen aus gemeinsamen Lösungen hergestellt, und die Mischbarkeit wurde durch DSC-Messungen und Transparenz der Schmelze beurteilt. Im Falle der binären Blends zeigten PAR/PBT und Phenoxid/PBT Mischbarkeit, während sich PAR/Phenoxid nicht mischen ließ. Die Mischbarkeitstendenz der unmischbaren PAR/Phenoxid-Mischungen konnte jedoch durch Zugabe von PBT erhöht werden; eine ausreichende Menge PBT machte die ternären Mischungen mischbar, so daß diese eine einzige Tg in der DSC-Kurve zeigten. Im ternären Phasendiagramm war das Maximum der Mischbarkeitsgrenze in Richtung auf die Phenoxidseite hin verschoben, was auf die bessere Mischbarkeit von PAR/PBT im Vergleich zu Phenoxid/PBT zurückgeführt wird.
    Notes: The phase and miscibility behavior of binary and ternary blends containing polyarylate (PAR), polyhydroxyether of bisphenol AIUPAC: poly[oxy(2-hydroxytrimethylene)oxy-1,4-phenylene-isopropylidene-1,4-phenylene]. (Phenoxy), and poly(butylene terephthalate) (PBT) were studied. The blends were prepared by solution-precipitation method and miscibility was examined by DSC and melt transparency. In binary blends, PAR/PBT and Phenoxy/PBT blends show miscibility, while PAR/Phenoxy appeared to be immiscible. However, the miscibility of incompatible PAR/Phenoxy blend was enhanced by addition of PBT. The addition of sufficient amount of PBT caused the ternary blend to have a single glass transition temperature. The shape of miscibility boundary of ternary blend was skewed to the apex of Phenoxy, which was attributed to the better miscibility of PAR/PBT than that of Phenoxy/PBT.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1991.051920111
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  • 5
    Electronic Resource
    Electronic Resource
    Compatibilizing effect of polyarylate-polystyrene block copolymer in polyarylate/polystyrene blends (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 32 (1994), S. 21-28 
    Details
    ISSN: 0887-6266
    Keywords: polyarylate ; polystyrene ; block copolymer ; compatibility ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The compatibilizing effect of polyarylate-polystyrene (PAR-PS) block copolymer prepared from macroazo initiator was examined in polyarylate/polystyrene blends from the view-points of morphology, density, and thermal, mechanical, and rheological properties. PARPS block copolymer enhanced the mutual dissolution of the homopolymers. Reduced dispersed-domain size and increased density showed the efficiency of the block copolymer as a compatibilizing agent. Results from mechanical and rheological properties could also be explained by the compatibilizing effect of PAR-PS block copolymer in the blends. © 1994 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1994.090320104
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  • 6
    Electronic Resource
    Electronic Resource
    Miscibility of tetramethyl polysulfone and poly(styrene-co-acrylonitrile) (1994)
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 15 (1994), S. 265-270 
    Details
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1994.030150313
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  • 7
    Electronic Resource
    Electronic Resource
    Thermal and mechanical properties of poly(esterurethane) modified by copolyamide segments of various molecular weight (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 36 (1995), S. 239-245 
    Details
    ISSN: 0959-8103
    Keywords: poly(esterurethane) ; copolyamide segments ; thermal and mechanical properties ; 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 , Physics
    Notes: Thermoplastic polyurethane elastomers (TPUs) from diol-terminated poly(ethylene adipate) (PEA), 1,4-butanediol (BD) and 4,4′-diphenylmethane-diisocyanate (MDI) were modified by copolymerizing with diamine-terminated nylon-6/6,6 copolyamide (CPA) oligomers. The effects of content and molecular weight of CPA segments on the thermal and mechanical properties of TPU were studied. PEA segments showed enhanced crystallization when some of the hard segments were replaced by CPA segments, showing weaker CPA-PEA interaction. The crystallinity of the hard segments was reduced, probably due to some interaction and phase mixing between hard and CPA segments. The modulus of TPU also decreased, more markedly with CPA segments of higher molecular weight.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1995.210360303
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  • 8
    Electronic Resource
    Electronic Resource
    Über die polymerisation von p-jodstyrol (1962)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 53 (1962), S. 154-172 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Investigations on the radical-initiated polymerisation of p-iodostyrene in bulk as well as in benzene solution were carried out.It is known that the iodine in the poly-p-iodostyrene can be removed first by replacing it with lithium and subsequently hydrolysing it. The degree of polymerisation can then be determined by viscosimetric methods. So it is possible to obtain a relationship between the intrinsic viscosity and the degree of polymerisation for poly-p-iodostyrene indirectly through the “polymeric analogic” conversion of poly-p-iodostyrene to polystyrene.From kinetic measurements the chain transfer constant of the monomer p-iodostyrene was found to be 1,9·10-4.The copolymerisation of styrene and p-iodostyrene at 50°C was investigated. The determination of the reactivity ratios gave r1 = 0.45 ± 0.02 for styrene and r2 = 1.03 ± 0.05 for p-iodostyrene. The molecular weight of the copolymers would be determined by an analogous method as in the case of homopolymers mentioned above.Some experiments dealing with ionic polymerisation of p-iodostyrene resulted in polymers with lower iodine contents than expected.
    Notes: Die radikalische Polymerisation von p-Jodstyrol wird in Substanz und in benzolischer Lösung untersucht. Die Poly-p-jodstyrole lassen sich durch Austausch des Jods gegen Lithium und anschließende Hydrolyse quantitativ in Polystyrole überführen; deren Polymerisationsgrade können in bekannter Weise viskosimetrisch bestimmt werden. Dadurch ist die Aufstellung einer Viskositäts-Polymerisationsgrad-Beziehung für Poly-p-jodstyrol auf indirektem Wege durch polymeranaloge Umsetzung von Poly-p-jodstyrol zu Polystyrol möglich. Aus kinetischen Messungen wird die Übertragungskonstante des monomeren p-Jodstyrols zu 1,9·10-4 bestimmt.Für die Copolymerisation von Styrol und p-Jodstyrol bei 50°C gelten folgende Parameter: r1 = 0,45 ± 0,02 (Styrol); r2 = 1,03 ± 0,05 (p-Jodstyrol). Die Molekulargewichte der Copolymerisate lassen sich auf ähnliche Weise wie im Falle der Homopolymerisate durch Überführung in Polystyrole bestimmen.Ferner wird über Versuche zur ionischen Polymerisation von p-Jodstyrol berichtet, wobei jedoch fast stets Polymere mit zu niedrigen Jodgehalten entstehen.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1962.020530116
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  • 9
    Electronic Resource
    Electronic Resource
    Isoprene polymerization with cerium(III) acetylacetonate-diethylaluminum chloride in toluene: Effects of water concentration (1987)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 1457-1462 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Isoprene has been polymerized in toluene using a cerium(III) acetylacetonate-diethylaluminum chloride catalyst. The microstructure of obtained polyisoprene is predominantly trans-1,4 structure. For this system the effects of water concentration on the conversion of isoprene to polymer, the microstructure and the molecular weight of polyisoprene have been examined. The conversion at a given polymerization time has a maximum at [H2O]/[DEAC] ratio of 1:0-1.1. The amounts of trans-1,4 structure and the viscosity average molecular weights of polyisoprene are nearly independent of the water concentration. Although the conversion increases with the concentration of catalyst, the trans-1,4 content is not affected by the catalyst concentration and the molecular weight of polyisoprene decreases slightly with increasing catalyst concentration.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1987.080250601
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  • 10
    Electronic Resource
    Electronic Resource
    Polyarylate-polystyrene block copolymer from macro-azoinitiator: Synthesis and its thermal properties (1993)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 31 (1993), S. 435-441 
    Details
    ISSN: 0887-624X
    Keywords: macro-azoinitiator ; polyarylate ; polystyrene ; block copolymer ; thermal properties ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A macro-azoinitiator containing polyarylate segment and azo group was prepared by the solution polycondensation of azobiscyanopentanoyl chloride and hydroxy-terminated polyarylates having viscosity-average molecular weights of 6200, 8100, and 12 400. These macro-azoinitiators were used in the radical polymerization of styrene to synthesize polyarylate-polystyrene block copolymers. Thermal properties measured by the differential scanning calorimetry indicated the phase separated morphology of the block copolymers except at low molecular weight of the block constituents. © 1993 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1993.080310215
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