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  • 1
    Electronic Resource
    Electronic Resource
    Thermally activated phenolic fibers (1991)
    s.l. : American Chemical Society
    Chemistry of materials 3 (1991), S. 594-597 
    Details
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cm00016a007
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  • 2
    Electronic Resource
    Electronic Resource
    Occurrence of Liquid Crystallinity in a Borazine Polymer (1994)
    s.l. : American Chemical Society
    Chemistry of materials 6 (1994), S. 395-400 
    Details
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cm00040a011
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  • 3
    Electronic Resource
    Electronic Resource
    Direct evidence for transesterification and randomization in a mixture of homopolyesters of poly(4-hydroxybenzoic acid) and poly(6-hydroxy-2-naphthoic acid) above 450.degree. (1990)
    s.l. : American Chemical Society
    Macromolecules 23 (1990), S. 1803-1809 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00208a041
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  • 4
    Electronic Resource
    Electronic Resource
    Fabrication of oxidation-resistant carbon fiber/boron nitride matrix composites (1993)
    s.l. : American Chemical Society
    Chemistry of materials 5 (1993), S. 1216-1220 
    Details
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cm00033a006
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  • 5
    Electronic Resource
    Electronic Resource
    Electronic and photonic applications of polymers, Murrae J. Bowden and S. Richard Turner, Eds., American Chemical Society, Washington, D. C., 1988, 372 pp., Price: $94.95 (1990)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 28 (1990), S. 209-209 
    Details
    ISSN: 0887-6258
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1990.140280609
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  • 6
    Electronic Resource
    Electronic Resource
    Ordering processes in polyester thermoplastic elastomers (1994)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 5 (1994), S. 292-295 
    Details
    ISSN: 1042-7147
    Keywords: Thermoplastic ; Elastomers ; Ordering ; High temperature ; 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: Synthesis of thermoplastic elastomers derived from poly-tetramethylene glycol (PTME glycol), dimethylterephthalate and different mixtures of ethylene and butylene glycol is described. Extended heating near the crystalline melting point of these systems leads to a measurable increase in the melting point of 15-20°C. This ordering process can be reversed by heating at 250°C or well above the melting point. These results are interpreted in terms of sequence ordering within existing crystallites via interchain transesterification on heating near the melting point. Heating at 250°C is best explained as randomization of the ordered ester units.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1994.220050509
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  • 7
    Electronic Resource
    Electronic Resource
    A new approach to the design of surface treatments for reinforcing agents (1992)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 3 (1992), S. 413-415 
    Details
    ISSN: 1042-7147
    Keywords: Carbon fibres ; Polymer matrices ; Interface ; High Surface Area ; 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: A new approach for design of improved interfacial bonding between carbon fibers and polymeric matrices is described. In this method the affinity of surface-treated carbon fibers to various polymer matrices is simulated by analyzing the adsorption characteristics of model compounds, typical of the polymer units, onto very high surface area carbon fibers. The affinity can be evaluated by the use of Thermogravimetric Analysis (TGA) to measure adsorption-desorption characteristics. Since high surface area, activated carbon fibers (ACF) can be chemically treated to obtain acidic, basic, nonpolar or highly polar surfaces, it should be possible to assess the interactions of chemically modified surfaces with model compounds such as methanol (MeOH), acetone, dimethylformamide (DMF), dimethylether, tetrahydrofuran (THF) and water. Some preliminary results are presented, indicating that surface treatments for carbon fibers other than oxidation may lead to enhanced bonding with polymeric matrices.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1992.220030708
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  • 8
    Electronic Resource
    Electronic Resource
    Design of oxidation-resistant coatings for high-temperature composites (1991)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 2 (1991), S. 265-268 
    Details
    ISSN: 1042-7147
    Keywords: Carbon ; Oxidation resistance ; SiC ; SiO2 ; B2O3 ; 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: Fabrication of oxidation-resistant carbon fiber reinforced carbon composites requires use of high-temperature CVD deposition of coatings such as SiC. In this paper the use of low-temperature chemical approaches for depositing oxidation-resistant coatings was explored. Coatings of SiO2, B2O3, and SiC were examined, with the intent of distinguishing possible failure mechanisms. Factors contributing to poor oxidation resistance of these coatings include presence of microcracks in the original preparation of the coating and diffusion of oxygen through the coating at high temperatures.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1991.220020601
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  • 9
    Electronic Resource
    Electronic Resource
    Hochleistungsmaterialien: Trends und Möglichkeiten am Beispiel flüssigkristalliner Polymere (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 102 (1990), S. 1296-1301 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In den letzten zehn Jahren haben sich Forschung und Entwicklung vermehrt dem Gebiet der speziellen Polymere zugewendet. Das Interesse bezieht sich auf zwei Kategorien von Polymeren: a) auf Polymere, die in sehr kleinen Mengen als Zusatzstoffe dienen, um kritische Anforderungen als Teil eines Systems erfüllen zu können, und b) auf technische Kunststoffe mit einem hohen Leistungsprofil hinsichtlich des mechanischen Verhaltens und der thermischen Belastbarkeit. Die erste Kategorie reicht von Polymeren für leistungsfähige Resiste und Isolier-schichten für mikroelektronische Schaltungen bis zu Membranen für Filtrationssysteme. Die zweite Kategorie umfaßt verbesserte Matrixharzsysteme für Hochleistungsverbundwerkstoffe sowie flüssigkristalline Polymere. Dieser Bericht gibt zunächst einen Überblick über Chancen für den Einsatz von Hochleistungsmaterialien und besonders für Spezialpolymere. Anschließend wird der Entwicklungsstand der flüssigkristallinen Copolyester diskutiert, wobei insbesondere auf die Interpretation ihrer Mikrostruktur eingegangen werden soll, ein Hauptproblem bei derartigen Materialien.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19901021112
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  • 10
    Electronic Resource
    Electronic Resource
    Advanced Materials: Trends and Possibilities in Liquid Crystalline Polymers (1990)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 29 (1990), S. 1256-1261 
    Details
    ISSN: 0570-0833
    Keywords: Polymers ; Liquid crystals ; Crystalline polymers ; Materials science ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: During the past ten years there has been a sharp increase in interest in the opportunities afforded by R & D in the field of specialty polymers. Interest is mainly being shown in two distinct categories of polymers, namely, (a) polymers which are used in very small quantities to fulfill critical needs as a part of device system, and (b) high-performance engineering polymers which significantly extend their mechanical and thermal properties for structural applications. The first category ranges from advanced resists and insulating layers for microelectronic devices to membranes for filtration systems. The second category encompasses improved matrices for advanced composites as well as liquid crystalline polymers. In the present paper an overview is first given of the emerging opportunities for advanced materials and particularly specialty polymers. The status of work on liquid crystalline copolyesters is then discussed with special emphasis on one of the major problems confronting this field, namely interpreting the microstructure of the copolyesters.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.199012561
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