Model for the hydrodynamic dispersion of agglomerates incorporating thermoresponsive additives
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Luciana Bava
und
Stuart J. Rowan
Abstract
A phenomenological model for the hydrodynamic dispersion of silica agglomerates modified with a thermoresponsive hydrogel (poly-N-isopropylacrylamide, PNIPAM) is presented. The model well describes experimental observations of the dependence of the dispersion behavior on the presence of additives (water and PNIPAM hydrogels) and applied hydrodynamic stress. Most importantly, the thermosensitivity of the dispersion process is captured by characterizing the agglomerate structure and cohesive force at two different temperatures (above and below the hydrogel transition temperature). The transition in dispersion mechanism between rupture-like and erosion-like regimes with system temperature can also be accommodated within the model.
©2011 by Walter de Gruyter Berlin New York
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Artikel in diesem Heft
- Publisher’s Note
- A new start for Journal of Polymer Engineering
- News
- Implementing a new manuscript submission system
- Original Articles
- Model for the hydrodynamic dispersion of agglomerates incorporating thermoresponsive additives
- Preparation and properties of PLA/long alkyl chain modified multi-walled carbon nanotubes nanocomposites
- Insights into the slip flow phenomena encountered during in-mold coating (IMC) of plastic parts
- Physical properties of biaxially oriented PA6 film for simultaneous stretching and sequential processing
- Synthesis and solution behaviors of star hydrophobically modified acrylamide copolymers
- Melt temperature learning control of injection molding process based on CMAC neural network
- Numerical analysis of mixing performance of mixing section in pin-barrel single-screw extruder
- New process technology for high volume production of composites
