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  • 1
    Electronic Resource
    Electronic Resource
    Size effect of compliant rubbery particles on craze plasticity in polystyrene (1990)
    s.l. : American Chemical Society
    Macromolecules 23 (1990), S. 3838-3848 
    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/ma00218a020
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Polypropylene Nanocomposites – Preparation and Properties (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 94 (June 2003), p. 335-338 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/26/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.94.335.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Measurements of thermal conductivity of materials using a transient technique. I. Theoretical background (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 485-492 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A method of measuring the thermal conductivity of materials during transient heating or cooling is proposed based on the continuous recording of the temperature difference between sample surfaces when known heat flux is supplied to one of the sample surfaces by a heater. The analysis of the solution of the heat conduction equation for a measuring system consisting of two platelike samples separated by a heater shows that the transient heating or cooling significantly influences the temperature distribution within the samples. It follows from the theoretical consideration that this effect as well as the effects resulting from heat generation or absorption in the samples during phase transitions can be eliminated by subtracting the results of two measurements conducted with different powers supplied by the heater. The condition for validity of this procedure is the small temperature difference between sample surfaces which can be achieved by the selection of appropriate temperature change rate or sample thickness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337436
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  • 4
    Electronic Resource
    Electronic Resource
    Measurements of thermal conductivity of materials using a transient technique. II. Description of the apparatus (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 493-498 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper, an apparatus for measurements of the thermal conductivity of materials as a continuous function of the temperature is described. It works on the principle of continuous recording of the temperature difference between the surfaces of the sample caused by the flux of heat while the ambient temperature is linearily changed. The theoretical background described in the preceding paper by E. Piorkowska and A. Galeski [J. Appl. Phys. 60, (square, solid)(square, solid)(square, solid)(square, solid) (1986)] showed that the utilization of the results of two continuous measurements with different heat fluxes makes it possible to eliminate all components of the thermal response of the sample except the one depending on the heat flux and the thermal conductivity only. Testing measurements were conducted on samples of several nonmetalic materials. The results obtained indicate high precision of the method and the apparatus and reveal new possibilities of studying the thermal conductivity of materials during phase transitions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337437
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  • 5
    Electronic Resource
    Electronic Resource
    Growth sites in space and time (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 4700-4703 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100268a011
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  • 6
    Electronic Resource
    Electronic Resource
    Nonisothermal crystallization of polymers in samples of finite dimensions (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 1046-1059 
    Details
    ISSN: 1435-1536
    Keywords: Key words Nonisothermal crystallization ; isokinetic crystallization ; instantaneous nucleation ; confined samples
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  The formation and final form of spherulite pattern in samples of finite thickness, strips and plates, are described by means of the conversion degree, the rate of formation of spherulitic interiors and the distributions of distances from spherulites centers to spherulites interiors. Two model crystallization processes are considered: crystallization with instantaneous nucleation and isokinetic crystallization. The influence of the instantaneous nucleation at sample boundaries on the spherulitic structure formation is also discussed. The master curve approach for the processes considered is proposed. The results in analytical forms are verified by computer simulation of spherulitic crystallization in two- and three-dimensional samples of finite thickness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960050183
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  • 7
    Electronic Resource
    Electronic Resource
    Nonisothermal crystallization of polymers in samples of finite dimensions (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 1035-1045 
    Details
    ISSN: 1435-1536
    Keywords: Key words Nonisothermal crystallization ; confined samples ; conversion degree
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  The mathematical description of the kinetics of spherulitic patterns formation during isothermal and nonisothermal crystallization in samples of finite thickness, strips and plates, is based on the assumption of the momentary randomness of primary nucleation. The time distributions of the formation of the spherulite interiors as well as the time dependence of the conversion degree of a melt into spherulites are derived for time dependent primary nucleation rate and spherulite growth rate. The spherulitic final pattern is described by means of the distributions of distances from spherulite centers to spherulite internal points. The influence of the nucleation of sample boundaries on the kinetics of crystallization and on the final spherulitic structure is also determined. In all dependencies derived the components resulting from both nucleation processes – at sample boundaries and inside a sample – are distinguished.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960050182
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  • 8
    Electronic Resource
    Electronic Resource
    Method of determining the kinetics of spherulite primary nucleation from the truncation of spherulites (1979)
    Springer
    Polymer bulletin 1 (1979), S. 275-279 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Synopsis An attempt is made to describe mutual truncation between two coinciding spherulites. It is shown that if in a sample the borderlines between spherulites are not straight lines, the spherulites did not arise simultaneously. Using. a mathematical approach it is possible to determine the time distribution of primary nucleation from the shapes of truncated spherulites. This was done for polyoxymethylene samples at two different crystallization temperatures. The superiority of thermal over athermal type of nucleation depends on the crystallization temperature which lead to different spherulite size distributions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254336
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  • 9
    Electronic Resource
    Electronic Resource
    Acoustic emission during polymer crystallization (1987)
    [s.l.] : Nature Publishing Group
    Nature 325 (1987), S. 40-41 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Crystallization of several polymers was investigated: isotactic polypropylene, poly(methylene oxide) and linear polyethylene. An acoustic emission analyser. Physics Acoustic Corporation apparatus PAC 3000/3004, with wide frequency band sensor (10 kHz-1 MHz) was used. Samples of polymers in the form ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/325040a0
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  • 10
    Electronic Resource
    Electronic Resource
    Method of determining the kinetics of spherulite primary nucleation from the spherulite shapes in bulk samples (1980)
    Springer
    Polymer bulletin 2 (1980), S. 1-6 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Using the mathematical approach it was shown that it is possible to find the time lag between nucleation acts of two adjacent spherulites from the curved border lines seen in the thin section of a bulk sample. The method of the determining time distribution of the primary nucleation is proposed to be done in the similar way as it was done in the two dimensional case (PAKUŁA et al. 1979). Based on the above the measurements of the nuclei succesion were reconstructed in two different injection moulded poly methylene oxide samples. This shows a marked number of thermal nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275545
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