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  • 1
    Electronic Resource
    Electronic Resource
    Effect of roughness on rubber friction when waves of detachment are present (1976)
    [s.l.] : Nature Publishing Group
    Nature 262 (1976), S. 381-382 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The adhesion of rubber depends markedly on the roughness of the surface with which it is in contact4,5. Slight roughness can increase the adhesion compared with an ideally smooth surface, while larger values of roughness can greatly reduce it6. When a cylinder rolls on clean rubber, the two ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/262381a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Combined rotating and linear motion effects on the wear of polymers (1979)
    [s.l.] : Nature Publishing Group
    Nature 281 (1979), S. 206-208 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure 1 shows data for the wear per unit distance, JET. for specimens of PTFE and low density polyethylene, LDPE, as a function of R obtained using a pin-on-disk machine (for experimental details see rf. 6). We observe that K is a marked function of R for PTFE but not for LDPE. Figure 2 shows the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/281206a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The influence of dynamic loading on sliding friction (1979)
    [s.l.] : Nature Publishing Group
    Nature 278 (1979), S. 725-726 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Schematic diagram of the experimental arrangement. A glass sphere of radius r is loaded against a glass plate on which is deposited a thin organic film of thickness h (typically 100 nm). The surfaces are set in relative motion with a velocity ? by the application of frictional force, F, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/278725a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The behaviour of long molecules diffusing in solid polyethylene (1977)
    [s.l.] : Nature Publishing Group
    Nature 266 (1977), S. 43-44 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We measured D for two linear diffusants of the form n (CH2)NX, X being a suitable label and N = 25 or 45. The matrix was linear polyethylene cooled at two widely differing rates from the melt. The measuring technique was one we have recently developed, based on infrared microdensitometry7, and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/266043a0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of surface roughness on rolling friction and adhesion between elastic solids (1976)
    [s.l.] : Nature Publishing Group
    Nature 260 (1976), S. 313-315 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Roberts and Thomas3 and, independently, Kendall4 had shown that in rolling friction the adhesion term may sometimes be dominant. In these circumstances the rolling friction provides a direct measure of the work required to peel apart and re-adhere the interface. This depends on the velocity, and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/260313a0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Technique for the study of diffusion of large molecules in polymers based on infrared microdensitometry (1975)
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 386-387 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have developed a simple technique for the measurement of the translational diffusion of large molecules in polymeric matrices, based on microdensitometry in the infrared. Essentially, a step function in the concentration of the diffusant is set up within the bulk matrix, and diffusion is allowed ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/257386a0
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  • 7
    Electronic Resource
    Electronic Resource
    The effect of crystallinity on the scratch hardness of poly(ether ether ketone) (1996)
    Springer
    Polymer bulletin 36 (1996), S. 767-771 
    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 This paper describes a study of the surface properties of the poly(ether ether ketone) (PEEK) using a scratch hardness technique. A comparison of the hardness values determined for amorphous and crystalline PEEK shows that the crystalline polymer is harder. In addition, comparison of the scratch frictional behaviour indicates several friction mechanisms apply for this polymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00338642
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Der Einfluß des Kontaktdrucks und der Verseifung auf das Gleitvermögen von Stearinsäure-Einzelschichten (1980)
    Springer
    Colloid & polymer science 258 (1980), S. 990-990 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    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/10.1007/BF01584942
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Gas-induced damage in elastomeric composites (1990)
    Springer
    Journal of materials science 25 (1990), S. 3017-3023 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Gases may induce extensive and irreversible damage in elastomers when they are allowed to escape from the polymeric matrix. The damage is most evident as internal lacerations and also as an overall change in certain mechanical properties. The damage process, commonly termed explosive decompression failure, is really confined to gas-polymer systems which are initially equilibrated at high pneumatic stresses; greater than 107 Pa. Two interrelated facets of this phenomenon are described in the context of elastomeric composites with particular emphasis on the role of interfacial quality. The results of an optical examination of the internal cracks found during a typical gas-induced rupture cycle are described. The system is a commercial silicone elastomer-glass filler composite where the fillers have been surface modified in order to alter the adhesive strength of the interface. The data indicate that the filler particles significantly modify the stress fields in the elastomer during gas-induced rupture. Essentially, the fillers suppress the development of the characteristic large scale axially symmetrical stress fields in the composites. This visual assessment of the damage is then related to the deterioration in certain mechanical properties of this current system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00584920
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Carbon dioxide-poly(vinylidene fluoride) interactions at high pressure (1998)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 36 (1998), S. 2435-2447 
    Details
    ISSN: 0887-6266
    Keywords: poly(vinylidene fluoride) ; carbon dioxide ; supercritical fluid ; diffusion ; partial molar volume ; solubility parameter ; mass sorption ; high pressure ; dilation ; Sanchez-Lacombe model ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The article reports on the behaviour of poly(vinylidene fluoride) in carbon dioxide at 42°C and 80°C and in a pressure range of 0.1-30 MPa. Experimental techniques for the measurement of gas mass uptake and polymer dilatation are described and the corresponding data are reported as mass sorption and dilatation isotherms, respectively. The mass uptake experiment was also used to follow the evolution of the coefficient of diffusion of carbon dioxide into the polymer as a function of pressure or concentration. An analysis for the calculation of the partial molar volume of carbon dioxide as a function of pressure is also given, which shows that the ‘apparent’ partial molar volume of the carbon dioxide decreases with pressure to very low values, at high pressure. The computed values are significantly less than those for either the liquid or the solid phases of pure carbon dioxide, and also lower than some data previously reported for silicone elastomers. A consideration of the origins of this apparent anomaly is given in the conclusions. © 1998 John Wiley & Sons, Inc. J. Polym. Sci. B Polym. Phys. 36: 2435-2447, 1998
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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