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  • 1
    Electronic Resource
    Electronic Resource
    Tensile strength of gum and reinforced EPR and SBR vulcanizatesPaper presented before the Division of Rubber Chemistry, American Chemical Society, at the Cleveland Meeting, October 17-19, 1962. (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 555-564 
    Details
    ISSN: 0021-8995
    Keywords: 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: The tensile strength and elongation at break of EPR and SBR gum vulcanizates were determined as a function of network chain density. A large viscous contribution to the tensile force was found at low crosslink density, and the maximum in the tensile strength versus chain density curve decreased as more nearly equilibrium conditions were approached. The rate dependence of tensile strength of black-filled EPR was studied by creep rupture experiments. The temperature dependence of the tensile strength of filled EPR and SBR was studied and compared. The same limiting degree of cure was obtained for both filled and gum vulcanizates of EPR.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080202
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  • 2
    Electronic Resource
    Electronic Resource
    Degradation and stabilization of polyacetal copolymers (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 1419-1429 
    Details
    ISSN: 0021-8995
    Keywords: 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: Acetal copolymers prepared from trioxane and ethylene oxide consist of polyoxymethylene segments with oxyethylene units distributed in the chain. These oxyethylene units profoundly affect the thermal and chemical behavior of the polymer. The presence of the oxyethylene units renders the copolymer amenable to thermal or base hydrolytic treatment which results in a final product with stable endgroups. The copolymers so obtained are significantly more stable, thermally and chemically, than acetylated polyoxymethylene homopolymer.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090418
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  • 3
    Electronic Resource
    Electronic Resource
    Residual unsaturation in polyacrylamide (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 3 (1960), S. 126-126 
    Details
    ISSN: 0021-8995
    Keywords: 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
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070030720
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  • 4
    Electronic Resource
    Electronic Resource
    Platinum and the hot corrosion behaviour of a nickel based superalloy (1990)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 41 (1990), S. 710-715 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Platin und das Heißgaskorrosionsverhalten einer Superlegierung auf NickelbasisDas Verhalten einer Platin enthaltenden Superlegierung auf Nickelbasis (RJM 2012) bei Heißgaskorrosion wird mit dem Verhalten einer ähnlichen, jedoch kein Platin enthaltenden Legierung (IN 792 + Hf) verglichen. Die Ergebnisse der Versuche im Brenner-Prüfstand bei 800°C zeigen, daß die Zunderschichten auf der platinhaltigen Legierung auch nach 1000 h noch schützend wirken, während die platinfreie Legierung schon nach 200 h stark angegriffen wird. Der Einfluß des Platins auf den Schädigungsmechanismus wird erörtert.
    Notes: The hot corrosion behaviour of a platinum containing nickel based superalloy (RJM 2012) is compared with that of a similar alloy (IN 792 + Hf) without platinum. The results of burner rig testing at 800°C showed that the oxide scales on the platinum containing alloy were still very protective after 1000 h on test whilst the alloy without platinum was severely attacked after only 200 h. The influence of platinum on the degradation mechanisms is discussed.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19900411211
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of α-methyl styrene on curing behaviour and interfacial properties of glass fibre-reinforced vinyl ester resins (1993)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 212 (1993), S. 67-75 
    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 Härtungseigenschaften des Bismethacrylat-Derivates von Bisphenol-A-diglycidylether (VE-Harz) mit Styrol und α-Methylstyrol (MS) als Reaktivverdünner wurden untersucht. Ein zunehmender Gehalt an MS verzögerte die Härtung. Mit Glasfasermatten, die teilweise mit γ-Methacryloyloxyropyl-trimethoxysilan (MTS) behandelt waren, wurden Composites hergestellt, deren Grenzflächen-Scherspannung mit der Ein-Faser-Methode gemessen wurde. Die Beschichtung mit MTS verbesserte die Grenzflächen-Scherspannung der Composites um ca. 30-50%. Ein MS-Gehalt von bis zu 5 Gew.-% MS hatte keinen Einfluß auf die interlaminare Scherfestigkeit (ILSS), weder bei den glasfaserverstärkten Composites noch bei den Ein-Faser-Proben. Eine Erhöhung des MS-Anteils auf 15 Gew.-% verbesserte sowohl die ILSS als auch die Biegesteifigkeit und die Biegefestigkeit.
    Notes: The curing behaviour of bismethacryloyl derivative of diglycidyl ether of bisphenol A (vinyl ester VE resin) containing styrene and α-methyl styrene (MS) as reactive diluents was studied. Delayed curing was observed in samples containing increasing proportions of MS. Interfacial shear stress of untreated as well as γ-methacryloyloxy-propyl trimethoxy silane (MTS) treated, glass fibre-reinforced VE resin composites were measured by single fibre technique. In comparison to untreated glass fibres, a 30 - 50% increase in interfacial shear stress was observed in composites based on MTS treated glass fibres. Addition of up to 5 wt.-% MS to VE resin did not affect the interfacial shear strength (ILSS). This behaviour was observed by using ILSS measurement of both glass fabric-reinforced composites as well as single fibre specimens. Further increase in MS to 15 wt.-% resulted in an increase in ILSS and bending stiffness as well as flexural strength.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1993.052120107
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  • 6
    Electronic Resource
    Electronic Resource
    Anionic polymerization of caprolactam. Optimization of the system NaH/N-benzoyl caprolactamThis contribution is dedicated to Professor Dr. H. Kämmerer on the occasion of his 65th birthday (1976)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 55 (1976), S. 141-154 
    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: Der Einfluß der Konzentration von Natriumhydrid als Katalysator und N-Benzoylcaprolactam als Cokatalysator auf die Polymerisation von ε-Caprolactam wurde untersucht. Dazu wurde die Änderung der Grenzviskositätszahl der entstandenen Polymeren in m-Kresol bei 25°C bestimmt. Auch der Einfluß der Polymerisationstemperatur wurde bei konstanter Konzentration von Katalysator und Cokatalysator auf die gleiche Weise untersucht.Obwohl die Reproduzierbarkeit der mittleren Molekulargewichte schwankte, kann man die folgenden Aussagen machen: Der höchste Wert der Viskositätszahl wurde für die niedrigste Konzentration des Cokatalysators erhalten. Die Viskositätszahl der Polymeren erreichte einen Maximalwert bei einer Katalysatorkonzentration von 1,8 mol-% für Cokatalysatorkonzentrationen von 1 und 2 mol-%, jedoch ergab sich bei höheren Konzentrationen an Cokatalysator kein klares Maximum. Im Bereich von 120-200°C ergab sich die höchste Viskositätszahl für die niedrigste Polymerisationstemperatur.
    Notes: The effects of changes in concentration of sodium hydride as catalyst, and N-benzoyl caprolactam as cocatalyst upon the polymerization of ε-caprolactam were studied. The effects were monitored as changes in the intrinsic viscosity of the resultant polymer determined in m-cresol at 25°C. Effects of changes in polymerization temperature at constant catalyst and cocatalyst concentration were also studied.Reproducibility of a given average molecular weight was variable. The highest value of intrinsic viscosity resulted from the lowest cocatalyst concentration studied. Intrinsic viscosity of the product reached a peak at 1.8 mol-% catalyst for 1 and 2 mol-% cocatalyst, but no clear peak occurred at the higher cocatalyst concentrations studied. The highest intrinsic viscosity resulted from the lowest polymerization temperature in the range from 120-200°C.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1976.050550112
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of structure and composition on physico-mechanical properties of methyl methacrylate/alkyl (meth)acrylate copolymers (1993)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 205 (1993), S. 47-58 
    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: Methylmethacrylat (MMA) mit einem Prepolymergehalt von 6-8% wurde mit unterschiedlichen Anteilen (1-20%) 2-Ethylhexylmethacrylat (EMMA), n-Hexylmethacrylat (HMA), 2-Ethylhexylacrylat (EHA) oder n-Hexylacrylat (HA) copolymerisiert. Aus den erhaltenen Copolymeren wurden Folien hergestellt, an denen der Einfluß der Copolymerstruktur auf Lichtdurchlässigkeit, Dichte und mechanische Eigenschaften ermittelt wurde. zugsfestigkeit and Speichermodul nahmen mit zunehmendem Comonomergehalt ab. Die Dehnung stieg im Fall von MMA/EHA- und MMA/HA-Copolymerfolien mit 15 und 20 Gew.-% Comonomeranteil merklich an. Mittels DMTA wurde die Erweichungstemperatur der Copolymeren bestimmt. Die HDT und die Erweichungstemperatur nahmen unter Biegebelastung mit steigendem Comonomergehalt de Copolymeren ab.
    Notes: The paper describes the fabrication of cast acrylic sheets by copolymerizing a prepolymer syrup of methyl methacrylate (MMA) with varying amounts (1-20 wt.-%) of 2-ethylhexyl methacrylate (EHMA), n-hexyl methacrylate (HMA), 2-ethylhexyl acrylate (EHA) and n-hexyl acrylate (HA). The effect of structure of copolymer on light transmittance, density and mechanical properties was evaluated. Tensile strength and storage modulus decreased with increasing comonomer content. Strain increased significantly in the case of MMA/EHA and MMA/HA copolymer sheets having 15 and 20 wt.-% of comonomer. Softening temperature of copolymer samples was determined using dynamic mechanical thermal analysis. Heat deflection temperature under flexural load and softening temperature decreased with increasing comonomer content in copolymer.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1993.052050104
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  • 8
    Electronic Resource
    Electronic Resource
    Friedel-crafts polyketones: Synthesis, characterization and antimicrobial properties (1996)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 241 (1996), S. 31-40 
    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 Friedel-Crafts-Reaktion von 2-Chloranisol mit Chloracetylchlorid und 1,2-Dichlorethan oder Dichlormethan mit wasserfreiem Aluminiumchlorid als Katalysator und Kohlenstoffdisulfid als Lösungsmittel wurden unter verschiedenen experimentellen Bedingungen sieben Polyketone hergestellt. Diese wurden mittels IR-Spektroskopie, Dampfdruckosmometrie, Thermogravimetrie und Differentialkalorimetrie charakterisiert; der Chlorgehalt wurde nach Carius bestimmt. Die Polyketone wurden hinsichtlich ihrer antimikrobiellen Eigenschaften gegen ausgewählte Mikroorganismen untersucht. Die Ergebnisse weisen darauf hin, daß einige dieser Harze gute antimikrobielle Eigenschaften gegenüber den untersuchten Mikroorganismen aufweisen und möglicherweise als Biozide kommerziell eingesetzt werden können.
    Notes: A series of seven polyketones was prepared by Friedel-Crafts reaction using 2-chloroanisole, choroacetyl chloride, 1,2-dichloroethane and dichloromethane with anhydrous aluminium chloride as catalyst and carbon disulfide as a solvent under different experimental conditions. The polyketones thus obtained were characterized by determination of the chlorine content (Carius method), IR spectroscopy, vapour-pressure osmometry, thermogravimetry and differential scanning calorimetry. All these polyketones were tested for their antimicrobial properties against selected microorganisms. The results indicate that some of these resins show fair to good antimicrobial properties towards tested microorganisms and may be used as commercial biocides.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1996.052410103
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of α-methyl styrene on properties of epoxy-novolac based vinyl ester resins (1993)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 211 (1993), S. 157-164 
    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: Ein Vinylesterharz auf der Basis eines epoxidierten Novolakes wurde mit Styrol/a-Methylstyrol-Gemischen unterschiedlicher Zusammensetzung als Reaktvverdünner vernetzt. Das Hürtungsverhalten wurde anhand der Gelbildungszeit untersucht. Mit zunehmendem Gehalt an a-Methylstyrol verzögerte sich die Härtungsreaktion, und die Zugfestigkeit der ausgehärteten Harze verschlechterte sich bei gleichzeitiger Verbesserung der Wärmestandfestigkeit. Die Biegefestigkeit und der Biegemodul sowohl der ausgehärteten Harze als auch damit hergestellter Glasfaserlaminate (Harzgehalt ca. 41 Gew.-%) nahmen zu. Zwölfstündige Lagerung der Laminate in siedendem Wasser führte mit steigendem Gehalt an α-Methylstyrolzu einer Verringerung der interlaminaren Scherfestigkeit.
    Notes: The paper describes the synthesis of vinyl esters using epoxy-novolac resin. The curing behaviour of the resins containing different portions of styrene and α-methyl styrene (α-MS) as reactive diluents was studied by gel time determination. Delayed curing was observed in samples containing increasing proportions of α-MS. An increase in the α-MS content resulted in a decrease in the tensile strength and increase in heat deflection temperature of the cured sheets. The flexural strength and flexural modulus of both resin and glass fibre-reinforced composites (resin content approx. 41 wt.-%) increased. Treatment with boiling water (12 h) of laminates resulted in a decrease in interlaminar shear strength with an increase in α-MS content.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1993.052110114
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  • 10
    Electronic Resource
    Electronic Resource
    Copolymers of methyl methacrylate and N-cyclohexyl maleimide: Preparation and properties (1994)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 221 (1994), S. 1-9 
    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 radikalische Copolymerisation von Methylmethacrylat (MMA) und N-Cyclo-hexylmaleimid (NCM) in Benzol wurden Copolymere mit niedriger Grenzviskosität erhalten. Copolymere mit NCM-Gehalten zwischen 0 und 30 Gew.-% und wesentlich höheren Grenzviskositäten wurden auch mittels Copolymerisation in Substanz in Form von Platten hergestellt. Eine Erhöhung des NCM-Gehaltes bewirkte eine Zunahme der thermischen Stabilität, des E-Moduls und der Wasseraufnahme sowie eine Abnahme der Zugfestigkeit, der Bruchdehnung, der Schlagzähigkeit gekerbter Probekörper und der Lichtdurchlässigkeit. Die Trübung nahm bis zu einem NCM-Gehalt von 15 Gew.-% nur geringfügig zu.
    Notes: Copolymers of methyl methacrylate (MMA) and N-cyclohexyl maleimide (NCM) with low intrinsic viscosity were obtained when free-radical copolymerization was carried out in benzene solution. Copolymers containing 0-30 wt.-% NCM were also prepared by bulk polymerization as cast acrylic sheets and had much higher intrinsic viscosity. An increase in NCM content in copolymers resulted in an increase in thermal stability and modulues and a decrease in tensile strength, strain at break, impact strength of unnotched specimen and light transmittance. The increase in haze was marginal up to 15 wt.-% of NCM. A decrease in water absorption was observed with an increase in NCM content.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1994.052210101
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