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  • 1
    Electronic Resource
    Electronic Resource
    Spectroscopic evidences for grafting of N-vinyl carbazole on cellulose-acetate film (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 32 (1994), S. 2251-2255 
    Details
    ISSN: 0887-624X
    Keywords: grafting ; spectroscopy ; N-vinyl carbazole ; cellulose-acetate ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N-vinyl carbazole (VCZ) was grafted on cellulose acetate film using simultaneous cobalt-60-γ ray irradiation grafting technique. Absorption, excitation, and emission spectral studies on the grafted film were carried out to ascertain the grafting of VCZ on the polymer matrix. Laser-flash photolysis studies with the solution of grafted film indicate the opening of the double bond of VCZ, which leads to the grafting. On the basis of the observed results, the mechanism of grafting in the system was proposed. © 1994 John Wiley & Sons, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1994.080321206
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  • 2
    Electronic Resource
    Electronic Resource
    Spectrophotometric determination of thermal transition of polymeric systems using photochromic probes (1995)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 33 (1995), S. 891-900 
    Details
    ISSN: 0887-624X
    Keywords: mercury-dithizone ; photochromic probes ; thermal relaxation rate ; free volume ; Tg ; thermal transition ; polystyrene ; poly(vinyl acetate) ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mercury-dithizone complex both free and bonded to a polymeric system has been synthesized and used to measure the thermal transition of polystyrene, poly(vinyl acetate), and some other polymers. The thermal relaxation rate of the activated complex in dark has been found to be dependent on the free volume of a polymer matrix. The rate goes through a maximum above Tg of a polymer. A very sensitive method, based on thermal recovery of activated photochromic probe chromophore has been devised to measure the thermal transition of both single and multicomponent polymer matrices. © 1995 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1995.080330602
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  • 3
    Electronic Resource
    Electronic Resource
    Polymerization of methyl methacrylate using isatoic anhydride-bromine donor-acceptor complex as the photoinitiator (1993)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 31 (1993), S. 1007-1012 
    Details
    ISSN: 0887-624X
    Keywords: photopolymerization ; isatoic anhydride-Br2 ; kinetics ; free-radical ; nonideal ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Isatoic anhydride (IA) alone did not initiate photopolymerization of methyl metacrylate (MMA) at 40°C when exposed to visible light for about 180 min. But IA, when used in combination with bromine (Br2) as the initiator, initiated the photopolymerization of MMA readily under the same conditions. This behavior was explained by the formation of a donor-acceptor type of complex between IA and Br2 in the presence of MMA. The polymerization was found to proceed via a free radical mechanism and the radical generation process was considered to follow an initial complexation reaction between the initiator components and monomer. The complex initiator showed nonideal kinetics for the present system (initiator exponent 〈 0.5) and was analyzed. The monomer exponents varied from 0.83 to 1.15 normally depending on the nature of solvent used. Initiator-dependent chain termination was significant as well as the bimolecular mode of chain termination. © 1993 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1993.080310422
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  • 4
    Electronic Resource
    Electronic Resource
    Einwirkung von Ammoniak auf Merkurocarbonat und Merkurosulfat (1914)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 86 (1914), S. 239-240 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19140860115
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  • 5
    Electronic Resource
    Electronic Resource
    Doppel-Ferrocyanide von Hydrazin und den metallischen Elementen (1924)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 140 (1924), S. 81-92 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19241400108
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  • 6
    Electronic Resource
    Electronic Resource
    Komplexe Platinverbindungen mit drei- und fünfwertigem Platin. VI (1933)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 215 (1933), S. 201-204 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19332150206
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  • 7
    Electronic Resource
    Electronic Resource
    Die Einwirkung von Ammoniak auf Merkuronitrat (1911)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 71 (1911), S. 309-312 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19110710128
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  • 8
    Electronic Resource
    Electronic Resource
    Fluoberyllate und ihre Analogie mit den Sulfaten. II. Fluoberyllate einiger zweiwertiger Metalle (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 257-267 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Fluoberyllate von Calcium, Strontium, Nickel, Kobalt, Zink, Cadmium, Eisen und Kupfer sind hergestellt und untersucht worden. Sie entsprechen den Sulfaten nicht nur in der chemischen Formel, sondern auch im Molarvolumen und in den Löslichkeiten. Es besteht auch Isomorphie zwischen den Fluoberyllaten der ge-nannten sechs Metalle und den entsprechenden Sulfaten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322050307
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  • 9
    Electronic Resource
    Electronic Resource
    Mechanical behavior and tensile fractography of compatible vinylchloride-vinylacetate-maleic acid terpolymer and nitrocellulose blends (1993)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 4 (1993), S. 502-508 
    Details
    ISSN: 1042-7147
    Keywords: Solution blending ; Modulus ; Brittle and ductile failure ; tensile fractography ; craze formation ; 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
    Notes: Vinylchloride-vinylacetate-maleic acid terpolymer (VMCH) and nitrocellulose (NC) were blended at 10% (W/V) concentration is cyclohexanone at different weight fractions. Compatible blends were obtained at all weight fractions. This paper reports the mechanical behavior of solvent cast blend films of VMCH and NC. The films were prepared by solution blending and subsequent casting on a mercury surface. Depending on the composition, the tensile behavior ranged from brittle to ductile. The effect of the blend ratio on the properties shows that within the Hookeian region the modulus and strength have a positive deviation from linearity, whereas the elongation has a negative deviation. The effect of the blend ratio on the ultimate properties of the materials shows a positive deviation in strength up to 63 wt% VMCH composition and a negative deviation in elongation and toughness. The tensile fractography of the pure VMCH and VMCH/NC blends shows the presence of peaks, foldings of fibrils along with cavities or voids, which indicate a ductile mode of failure with craze-initiated fracture. Fractography of the pure NC Indicates a brittle mode of failure wit h craze-initiated fracturing.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1993.220040804
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  • 10
    Electronic Resource
    Electronic Resource
    Role of solvent in the compatibility of a vinylchloride-vinylacetate-maleic acid terpolymer and nitrocellulose blends (1991)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 2 (1991), S. 191-196 
    Details
    ISSN: 1042-7147
    Keywords: Solution blending ; phase morphology ; Polymer-polymer interaction ; Donor number of solvents ; Taft-β value of solvents ; 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
    Notes: The compatibility of cast films of a vinylchloride-vinylacetate-maleic acid terpolymer (VMCH) and nitrocellulose (NC) blends is influenced by solvents. Transparent films of VMCH/NC blends are obtained when cast from solvents such as tetrahydrofuran or cyclohexanone, whereas hazy films are obtained when cast from solvents such as acetone or ethylacetate. Visible spectroscopy and phase morphology were used to analyse the compatibility-incompatibility of the blend. Differential scanning calorimetry (DSC) studies demonstrate that the transparent film is compatible, but the hazy film is incompatible. Fourier transform infra-red (FTIR) studies establish that a greater interaction is observed between the polymer pair in case of the compatible blend than in the case of the incompatible blend.A solvent dependency of blend compatibility is reflected in this study. The conformational state of the polymers in solution, which is responsible for the compatibility phenomena, may depend on the donor number and/or Taft-β value of the solvent. The greater the donor number and/or the Taft-β value, the higher may be the level of interaction between the solvent and the polymer molecules, which in turn may give a compatible blend after removal of the solvent.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1991.220020404
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