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  • 1
    Digitale Medien
    Digitale Medien
    Melting and crystallization behavior of an unusual compatible blend based on propylene copolymers (1987)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 27 (1987), S. 458-462 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: An unusual compatibility was observed with the melt blends of propylene/α-olefin copolymer with isotactic homopolypropylene. The simple binary blend exhibits a single glass-transition temperature, and, by differential scanning colorimetry, a single melting and crystallization temperature over the entire blending ratios examined. Depending on the compositions, the characteristic temperatures vary between those exhibited by the component polymers. Vigorous annealings failed to phase separate the components. The melting behavior of the annealed polymer sample suggests the crystalline components of the two polymers are cocrystallized in this unique compatible system.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760270611
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Mixing and morphological transformations in the compounding process for polymer blends: The phase inversion mechanismPresented at 1991 ANTEC. Society of Plastics Engineers, May 5 - 9, 1991. montreal (1995)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 1688-1694 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: This study reports on the progression of processes occurring in polymer blends during mixing. For the polymer pellet blends studied, an abrupt phase inversion was observed simultaneous with attainment of maximum torque in the batch mixer. A four-step phase inversion mechanism is described as predominant where dissipative mix-melting of the polymer system occurred in the mixing process.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760352105
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  • 3
    Digitale Medien
    Digitale Medien
    Melt viscosities of viton fluoroelastomer and EPDM blends (1976)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 14 (1976), S. 1729-1730 
    Details
    ISSN: 0098-1273
    Schlagwort(e): Physics ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Zusätzliches Material: 2 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pol.1976.180140919
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  • 4
    Digitale Medien
    Digitale Medien
    Fundamentals of polymer compounding: The phase-inversion mechanism during mixing of polymer blendsPresented at 1991 ANTEC, Society of Plastics Engineers, May 6, 1991, Montreal, Canada. (1992)
    Hoboken, NJ : Wiley-Blackwell
    Advances in Polymer Technology 11 (1992), S. 223-226 
    Details
    ISSN: 0730-6679
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: During a routine extrusion compounding of a polymer blend of polyarylate resin and ethylene/acrylate rubber, an unexpected powdery product instead of a cohesive mixture was obtained. Also, the 20% rubber component was not well dispersed in the final product. This process problem was studied by simulation with a laboratory internal mixer following the procedure discussed by Shih. The powder formation was successfully reproduced. From the results of continuous video monitoring and analyses of the intermediate samples collected during the simulation experiments, we found that the progression of mixing from solid pellets to a cohesive mixture in a batch mixer or a twin-screw extruder needs to “climb over” a prolonged transition state where the plastic polyarylate was dispersed in the 20% rubber. The finding led to two successful solutions to the powdering problem. A “phase-inversion” mechanism is proposed to explain the observed morphological changes. This mechanism appears to have wider applicability in the processing of polymer blends. © 1992 John Wiley & Sons, Inc.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/adv.1992.060110306
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