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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b03841
|2 doi
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| 041 |
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|a eng
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| 100 |
1 |
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|a Teo, Nicholas
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Surfactant-Free Process for the Fabrication of Polyimide Aerogel Microparticles
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|c 2019
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This work focuses on the fabrication of polyimide aerogel microparticles of diameter 200-1000 μm from a surfactant-free, two-phase, silicone oil/dimethylformamide (DMF) oil-in-oil (O/O) system using a simple microfluidic device. The polyimide sol prepared in DMF is turned into droplets suspended in silicone oil in the microfluidic device. The droplets are guided to a heated silicone oil bath to accelerate sol-gel transition and imidization reactions, thereby yielding spherical, discrete gel microparticles that do not undergo coalescence. The discrete gel microparticles are isolated and supercritically dried to obtain aerogel microparticles. The microparticle size distribution shows dependence on dispersed and continuous phase flowrates in the microfluidic channels. The microparticle surface morphology shows dependence on the silicone oil bath temperature
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|a Journal Article
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|a Jana, Sadhan C
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 35(2019), 6 vom: 12. Feb., Seite 2303-2312
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|g volume:35
|g year:2019
|g number:6
|g day:12
|g month:02
|g pages:2303-2312
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|u http://dx.doi.org/10.1021/acs.langmuir.8b03841
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