2012
DOI: 10.1002/app.38662
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Controllable preparation of uniform polystyrene nanospheres with premix membrane emulsification

Abstract: The expansion of polymer nanosphere applications requires facile and versatile preparation techniques. In this study, combining circled premix membrane emulsification and thermally initiated miniemulsion polymerization, we developed a new strategy for preparing uniform polystyrene nanospheres within a duration as short as 1 h. The size of the nanospheres, ranging from 40 to 120 nm, was dependent on the premix membrane emulsification cycle number, the transmembrane flow rate, and the membrane pore size; this wa… Show more

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Cited by 6 publications
(3 citation statements)
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“…The coarse emulsion can be also prepared by DME using a membrane with a significantly larger pore size than the membrane used subsequently in PME [29,30]. For continuous operation or to avoid loss of sensitive ingredients (that may occur in mechanical homogenization devices during premix preparation), an inline PME was proposed by Nazir [21] as shown in Fig.…”
Section: Process Design and Operationmentioning
confidence: 99%
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“…The coarse emulsion can be also prepared by DME using a membrane with a significantly larger pore size than the membrane used subsequently in PME [29,30]. For continuous operation or to avoid loss of sensitive ingredients (that may occur in mechanical homogenization devices during premix preparation), an inline PME was proposed by Nazir [21] as shown in Fig.…”
Section: Process Design and Operationmentioning
confidence: 99%
“…The metallic membranes are usually hydrophilic in nature, but can be made hydrophobic through surface modification or coating with a suitable polymer [61]. ) and squared pores (pore size: 4×4 µm, porosity: 2.65%), respectively [62], (c) woven stainless steel mesh membrane (pore size: 2 µm) [29], and (d,e, and f) LF-γ (pore size: 700-900 nm, porosity: 51%), LF-γ' (pore size: ~200 nm, porosity: 41%) and TM-γ' (pore size: ~300 nm, porosity: 26%) nickel superalloy membranes [63]. LF and TM represent thermally (load-free) and thermo-mechanically coarsened membranes, respectively, while γ and γ' represent the nickel-rich and nickel aluminide phases, respectively, which is subsequently separated from the matrix through electrochemical phase extraction.…”
Section: Metallic Membranesmentioning
confidence: 99%
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