Flow of pH-responsive microcapsules in porous media
Flow of pH-responsive microcapsules in porous media
复制标题
pH 响应微胶囊在多孔介质中的流动
DOI:
10.1016/j.ces.2014.11.009
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发表时间:
2015
影响因子:
4.7
通讯作者:
Gun W
中科院分区:
文献类型:
--
作者:
Gun W
This article investigates the use micro-capsules, containing a gelling agent hydroxypropyl cellulose (HPC), to alter flow paths in porous media. The aim is to preferentially block-off high permeability regions, thereby diverting the flow into adjacent un-swept low permeability regions. Micro-capsules with 2–7 µm in diameter were made by polymer precipitation through solvent evaporation using poly(4-vinyl pyridine) (PVP) as the shell material. A customised flow tank was constructed to facilitate porous media flow and both single and dual permeability experiments were conducted. Even without gelling agent, the micro-capsules gradually blocked the pore throats of the glass beads network. Following acidification a drop in permeability was observed. This was because swelling of the PVP shell constricted the pore throats. The permeability drop was observed to be more significant for low permeability regions. Flowing micro-capsules through the tank with two permeability regions in parallel allowed the high permeability region to be selectively blocked.
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影响因子:
9.9
作者:
R. Avery;J. Ramsay
通讯作者:
R. Avery;J. Ramsay
影响因子:
5.2
作者:
CIFTCIOGLU, M;SMITH, DM;ROSS, SB
通讯作者:
ROSS, SB
DOI:
10.1002/apj.5500020410
发表时间:
2008
期刊:
Developments in Chemical Engineering and Mineral Processing
影响因子:
--
作者:
M. S. Ray
通讯作者:
M. S. Ray
影响因子:
3.9
作者:
Keen, Polly H. R.;Slater, Nigel K. H.;Routh, Alexander F.
通讯作者:
Routh, Alexander F.
影响因子:
--
作者:
S. Kruyer
通讯作者:
S. Kruyer