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  • Polymer and Materials Science  (7)
  • Best. von Kupfer(II) mit Thioglykolsäure  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Stabilization of high conductivity in iodine doped polyphenylene sulfideNCL Comm. No. 4467. (1989)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 27 (1989), S. 127-131 
    Details
    ISSN: 0887-6258
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pol.1989.140270404
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  • 2
    Digitale Medien
    Digitale Medien
    Studies on polyurea-amide membranes (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 42 (1991), S. 1773-1777 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Different polyurea-amides were synthesized by interfacial polymerization of acid chloride, diamine, and diisocyanate. The polymers and the membranes were characterized for their RO/UF applications. Highly porous membranes could be prepared from the sulfuric acid-based casting formulation and the membrane casting conditions were established. The resulting membranes are not asymmetric as they give high permeability to water and salt solutions. They are found to be resistant to many organic solvents, thus making them useful in concentration/separation applications. Whole milk, egg albumin and Na-alginate were found to be rejected 100% by these membranes, while solutes of about 20,000 Mw are found to be rejected to the extent of 70-80%.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1991.070420634
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  • 3
    Digitale Medien
    Digitale Medien
    Studies on polyurea membrane (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 28 (1983), S. 1457-1463 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Synthesis of polyurea by interface polymerization of diisocyanate and diamine for preparation of polymer membrane for use in separation problems was investigated. A sulfuric-acid-based casting formulation was developed for the polymer prepared from 1,6-hexamethylene diamine and 1,6-hexamethylene diisocyanate. The resulting membrane is porous and highly permeable to water. However, salt rejection was found to be 〈20%, while high molecular weight solutes like milk, papain, and Na-alginate were found to be rejected 100%. The membrane is more like a sieve structure with the absence of an asymmetric layer. It is found to be resistant to many organic solvents, thus making it suitable for use in ultrafiltration applications.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1983.070280419
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  • 4
    Digitale Medien
    Digitale Medien
    Simple volumetric analysis of Cu(II) with thioglycollic acid (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 217-217 
    Details
    ISSN: 1618-2650
    Schlagwort(e): Best. von Kupfer(II) mit Thioglykolsäure ; Volumetrie
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00564065
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  • 5
    Digitale Medien
    Digitale Medien
    Studies in swelling of cotton. I. Neutral salt technique to determine the true swelling parameters in cadoxen (1976)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 20 (1976), S. 2347-2354 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: This paper describes the swelling of cotton fiber in cadoxen containing 4.6% cadmium (w/w) and 30% ethylenediamine (w/w). A special neutral salt technique is described involving the analysis of extract as well as mother liquor which enables the determination of mechanically held liquor and hence the values of true absorption. The percentage true weight swelling values are much lower than the percentage apparent weight swelling as measured by centrifuge technique. The effect of variation in material-to-liquor ratio on the true absorption of cadmium and ethylenediamine is also investigated.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1976.070200905
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  • 6
    Digitale Medien
    Digitale Medien
    Electron-beam-induced conduction in fluorinated ethylene propylene copolymer and its acrylonitrile graft copolymerNCL communication No. 2754. (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 21 (1983), S. 685-697 
    Details
    ISSN: 0098-1273
    Schlagwort(e): Physics ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Electron-beam-induced conductivity (EBIC) studies were carried out on fluorinated ethylene propylene copolymer (FEP) and its acrylonitrile graft copolymer (FEP-g-AN). The current transport parallel to the surface under the influence of an electron beam of medium energy (6-30 keV) is reported. The gain in EBIC is calculated and its characteristic variation as a function of beam energy is studied. Minima in the gain versus energy curves have been obtained around 21 keV for FEP, 12 and 18 keV for FEP-g-AN, and 12 keV for polyacrylonitrile (PAN). This behavior is explained by assuming the existence of electron trapping bands close to the surface, at characteristic distances below the surface of the polymeric film corresponding to the range of incident electrons. Gains of the order of 5, 12, and 30 have been obtained respectively for FEP, FEP-g-AN, and PAN for the maximum energy of incident electrons used.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pol.1983.180210502
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  • 7
    Digitale Medien
    Digitale Medien
    Emulsion polymerization of vinyl acetate (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 21 (1983), S. 2011-2016 
    Details
    ISSN: 0360-6376
    Schlagwort(e): Physics ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Emulsion polymerization of vinyl acetate with sodium laryl sulfate as emulsifier and potassium persulfate as initiator was studied and found to follow the rate equation suggested by Harriot: \documentclass{article}\pagestyle{empty}\begin{document}$ R_p = k_p \left( M \right)_p \left( {\frac{{2kd\left( {\rm I} \right)_w V_w V_p }}{{k_t }}} \right)^{{1 \mathord{\left/{\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} $\end{document}
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pol.1983.170210712
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  • 8
    Digitale Medien
    Digitale Medien
    Evaluation of pyrotechnic smoke for anti-infrared and anti-laser roles (1995)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 20 (1995), S. 16-20 
    Details
    ISSN: 0721-3115
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: This paper describes the experimental setup for evaluation of pyrotechnic smoke compositions for anti-laser and anti-infrared roles using the continuous wave 10.6 μm CO2 laser (4 watt) and presents the results for a few pyrotechnic smoke compositions. The particle sizes of the aerosol from pyrotechnic smoke compositions were also determined using Quartz crystal Microbalance - Cascade Impactor. Two smoke compositions containing hexachloroethane, anthracene/naphthalenee, potassium perchlorate and magnesium powder showed more than 97% attenuation of CO2 laser, whereas a composition containing zinc oxide, aluminium, iron oxide along with hexachlorocthane was least effective.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/prep.19950200105
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