NDLI: Influence of the elasticity of cellulose solutions on the dispersion of carbon black agglomerates

Content Provider	Springer Nature Link
Author	Liu, Weiqing Tarabukina, Elena Navard, Patrick
Copyright Year	2013
Abstract	A counter-rotating rheo-optical tool was used to study the dispersion process of carbon black agglomerates in different suspending media, including the solutions of different types of cellulose, aqueous hydroxypropylcellulose solutions, and polyisobutylene. For each suspending fluid, the mechanism of dispersion (erosion or rupture) was identified, and the macroscopic critical shear stress necessary for dispersion was measured. Checking that the impacts of fluid infiltration and agglomerate size on the macroscopic critical shear stress for dispersion were negligible in our case, we showed that elasticity is a major factor acting on dispersion physics. At a constant viscosity, the higher the elasticity is, the more difficult dispersion is, giving higher critical shear stresses for initiating dispersion. There is a linear correlation between the suspending fluid elasticity and this critical shear stress, independent of temperature. An explication of the influence of matrix elasticity on agglomerate dispersion based on recent numerical simulation is given.
Starting Page	1679
Ending Page	1690
Page Count	12
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	20
Issue Number	4
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-06-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon black Agglomerate dispersion Elasticity Bioorganic Chemistry Physical Chemistry Organic Chemistry Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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