ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Compaction  (1)
  • Orientational properties  (1)
  • Springer  (2)
Collection
Keywords
Publisher
  • Springer  (2)
Years
  • 1
    Electronic Resource
    Electronic Resource
    Stress-induced alignment of fibres in a particulate matrix (2000)
    Springer
    Colloid & polymer science 278 (2000), S. 783-788 
    Details
    ISSN: 1435-1536
    Keywords: Key words Microgel ; Microcrystalline cellulose ; Fibre reinforcement ; Orientational properties
    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  In this article, experimental evidence for the influence that steric interaction and orientational coupling have on the orientation of cellulose fibre dispersed in a particulate matrix is given. The filler coefficient of the fibre suspension is used as a probe to follow the average fibre orientation. It is shown that the fibres do not order into a nematic phase after numerous shear stress steps. From the evolution of the filler coefficient as a function of the time the stress was applied, a rate constant for reorientation was determined. Even in the dilute regime, its value depends on the fibre volume fraction. Results obtained with various fibre and particle sizes have been scaled onto a master curve, where it is shown that the rate of reorientation increases with the fibre–particle size ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960000322
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Stress-induced compaction of concentrated dispersions of gel particles (2000)
    Springer
    Colloid & polymer science 278 (2000), S. 777-782 
    Details
    ISSN: 1435-1536
    Keywords: Key words Granular material ; Microgel ; Packing fraction ; Compactivity ; Compaction
    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  When submitted to successive shear stress steps, the elastic shear modulus of a concentrated dispersion of soft gel particles shows an exponential increase from 50 to 110 Pa. A slow relaxation time (τ r ≃500 s) attributed to the mobility of the gel particles within their free volume is obtained. The amplitude of the relaxation time distribution decreases with the number of shear stress sequences, indicating a progressive decrease in the free volume available per particle. The results are explained by an increase in the packing density as grains rearrange under the external constraint. A rate constant is determined from the evolution of the dispersion's elastic modulus (K≃4 × 10−4 s−1). The rate of compaction shows a logarithmic decrease when the initial particle's packing fraction is increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960000321
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...