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240114s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03026
|2 doi
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|a eng
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| 100 |
1 |
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|a Wu, Jiacong
|e verfasserin
|4 aut
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| 245 |
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|a Temperature-Sensitive Janus Particles PEG/SiO2/PNIPAM-PEA
|b Applications in Foam Stabilization and Defoaming
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Revised 23.01.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The current study presents a scalable approach for the preparation of temperature-responsive PEG/SiO2/PNIPAM-PEA Janus particles and, for the first time, investigates their potential applications in stabilizing foam and defoaming by adjusting the temperature. The method utilizes a (W1 + O)/W2 emulsion system, which incorporates appropriate surfactants to stabilize the emulsion and prevent rapid dissolution of the hydrophilic triblock polymer PEG-b-PTEPM-b-PNIPAM in water. The PEG/SiO2/PNIPAM-PEA Janus particles with temperature-responsive characteristics were synthesized in a single step that combined the sol-gel reaction and photoinduced free radical polymerization. The contact angle of the hydrophilic PEG/SiO2/PNIPAM surface was measured to be 54.7 ± 0.1°, while the contact angle of the hydrophobic PEA surface was found to be 122.4 ± 0.1°. By incorporating PEG/SiO2/PNIPAM-PEA Janus particles at a temperature of 25 °C, the foam's half-life is significantly prolonged from 42 s to nearly 30 min. However, with an increase in temperature to 50 °C, the foam's half-life rapidly diminished to only 44 s. This innovative application effectively enhances foam stabilization at low temperatures and facilitates the rapid dissipation of foam at high temperatures
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|a Journal Article
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1 |
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|a Liu, Shiyuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ma, Xinnan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Cailiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Feng, Chengxiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Lei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Han, Juan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Yun
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 3 vom: 23. Jan., Seite 1774-1784
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|x 1520-5827
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|g volume:40
|g year:2024
|g number:3
|g day:23
|g month:01
|g pages:1774-1784
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03026
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