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  • Faster droplet production by delayed surfactant-addition in two-phase microfluidics to form thermo-sensitive microgels.

Faster droplet production by delayed surfactant-addition in two-phase microfluidics to form thermo-sensitive microgels.

Journal of colloid and interface science (2015-04-29)
Sebastian Seiffert, Fabian Friess, Andreas Lendlein, Christian Wischke
ABSTRACT

Microfluidic droplet templating produces monodisperse particles of well controllable sizes, but this is limited by the necessity to operate microfluidic devices at low flow rates in the dripping regime. Here, the per-channel rate of droplet production could be substantially increased by delayed surfactant addition as applied and verified for microfluidic production of N-isopropylacrylamide based microgels.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
N-Isopropylacrylamide, ≥99%
Sigma-Aldrich
N-Isopropylacrylamide, 97%
Sigma-Aldrich
N,N′-Methylenebis(acrylamide), 99%
Sigma-Aldrich
N,N′-Methylenebisacrylamide, powder, Molecular Biology, suitable for electrophoresis, ≥99.5%
Sigma-Aldrich
Adenosine 5′-phosphosulfate sodium salt, ≥85%
Sigma-Aldrich
N,N′-Methylenebisacrylamide, suitable for electrophoresis (after filtration or allowing insolubles to settle)
Sigma-Aldrich
N,N′-Methylenebis(acrylamide), Vetec, reagent grade
Sigma-Aldrich
N,N,N′,N′-Tetramethylethylenediamine, ≥99.5%, purified by redistillation
Sigma-Aldrich
N,N,N′,N′-Tetramethylethylenediamine, ReagentPlus®, 99%
Sigma-Aldrich
L-Lysine monohydrochloride, from non-animal source, meets EP, JP, USP testing specifications, suitable for cell culture, 98.5-101.0%
Sigma-Aldrich
N,N,N′,N′-Tetramethylethylenediamine, BioReagent, Molecular Biology, ≥99% (GC)
Sigma-Aldrich
N,N,N′,N′-Tetramethylethylenediamine, BioReagent, suitable for electrophoresis, ≥99.0%
Sigma-Aldrich
N,N′-Methylenebisacrylamide solution, suitable for electrophoresis, 2% in H2O
Sigma-Aldrich
Ammonium persulfate, BioUltra, ≥98.0% (RT)
Sigma-Aldrich
L-Lysine monohydrochloride, BioUltra, ≥99.5% (AT)
Sigma-Aldrich
L-Lysine monohydrochloride, reagent grade, ≥98% (HPLC)
Sigma-Aldrich
Ammonium persulfate, Molecular Biology, suitable for electrophoresis, ≥98%
Sigma-Aldrich
Ammonium persulfate, BioXtra, ≥98.0%