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Synergy between Composite Nanoparticles and Saponin β-Escin to Produce Long-Lasting Foams
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.iecr.9b06355 Kai Yu 1 , Bin Li 1 , Zhentao Wang 1 , Wei Zhang 1 , Dongbao Wang 1 , Haojie Xu 1 , Junfeng Wang 1 , David Harbottle 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.iecr.9b06355 Kai Yu 1 , Bin Li 1 , Zhentao Wang 1 , Wei Zhang 1 , Dongbao Wang 1 , Haojie Xu 1 , Junfeng Wang 1 , David Harbottle 2
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A synergy between poly(vinylpyrrolidone) (PVP)-coated silica nanoparticles (CPs) and saponin β-escin was exploited to develop long-lasting foams using low component concentrations. Individually, foams stabilized by either CPs or saponin β-escin suffered from bubble coarsening and bubble coalescence, respectively. In contrast, the successful synergy of CPs and saponin β-escin was shown to provide excellent foamability and foam stability, with no direct interaction between the two components. The CPs aggregated strongly in 0.55 M Na2SO4 and formed a porous stabilizing network, hindering bubble coalescence but not bubble coarsening. However, in foams stabilized by saponin β-escin and CPs, the bubble interface was saturated by the two components, with CPs forming thick liquid lamellae between bubbles, hindering liquid drainage and bubble coalescence, and saponin β-escin (added at 0.01 wt %) saturating the pore space in the CP interfacial network to retard bubble coarsening. Adding saponin β-escin as a co-foaming agent, the foamability and foam lifetime were increased by ∼2.5 and ∼4 times, respectively, compared to CP-stabilized foams.
中文翻译：
复合纳米颗粒与皂苷β-七叶皂素之间的协同作用以生产持久性泡沫
利用聚（乙烯基吡咯烷酮）（PVP）涂层的二氧化硅纳米颗粒（CPs）和皂苷β-七叶皂苷之间的协同作用，可以开发出低组分浓度的长效泡沫。单独地，由CP或皂苷β-七叶皂苷稳定的泡沫分别遭受气泡粗化和气泡聚结。相比之下，CP和皂苷β-七叶皂苷的成功协同作用显示出优异的起泡性和泡沫稳定性，而两种组分之间没有直接相互作用。CP在0.55 M Na 2 SO 4中强烈聚集并形成了一个多孔的稳定网络，阻止了气泡的聚结，但没有气泡的粗化。然而，在由皂苷β-七叶皂苷和CP稳定的泡沫中，气泡界面被这两种成分饱和，CP在气泡之间形成厚的液体薄片，阻碍了液体的排泄和气泡聚结，并且皂苷β-七叶皂苷（添加0.01 wt％） ）使CP界面网络中的孔隙空间饱和，以阻止气泡粗化。加入皂苷β-七叶皂苷作为共发泡剂，与CP稳定泡沫相比，起泡性和泡沫寿命分别增加了约2.5倍和约4倍。
更新日期：2020-04-24
中文翻译：
复合纳米颗粒与皂苷β-七叶皂素之间的协同作用以生产持久性泡沫
利用聚（乙烯基吡咯烷酮）（PVP）涂层的二氧化硅纳米颗粒（CPs）和皂苷β-七叶皂苷之间的协同作用，可以开发出低组分浓度的长效泡沫。单独地，由CP或皂苷β-七叶皂苷稳定的泡沫分别遭受气泡粗化和气泡聚结。相比之下，CP和皂苷β-七叶皂苷的成功协同作用显示出优异的起泡性和泡沫稳定性，而两种组分之间没有直接相互作用。CP在0.55 M Na 2 SO 4中强烈聚集并形成了一个多孔的稳定网络，阻止了气泡的聚结，但没有气泡的粗化。然而，在由皂苷β-七叶皂苷和CP稳定的泡沫中，气泡界面被这两种成分饱和，CP在气泡之间形成厚的液体薄片，阻碍了液体的排泄和气泡聚结，并且皂苷β-七叶皂苷（添加0.01 wt％） ）使CP界面网络中的孔隙空间饱和，以阻止气泡粗化。加入皂苷β-七叶皂苷作为共发泡剂，与CP稳定泡沫相比，起泡性和泡沫寿命分别增加了约2.5倍和约4倍。
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