Phase Separation of Hydrophilic Monomer/Surfactant Aqueous Solution Studied by a Combined Light Scattering and Interference Approach

2004 ◽  
Vol 205 (2) ◽  
pp. 256-265 ◽  
Author(s):  
Mao Peng ◽  
Xiaoxue Yuan
Keyword(s):  
Aqueous Solution ◽  
Phase Separation ◽  
Light Scattering ◽  
Hydrophilic Monomer ◽  
Surfactant Aqueous Solution

Phase separation of a nonionic surfactant aqueous solution in a standing surface acoustic wave for submicron particle manipulation

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Lei Zhao ◽  
Pengfei Niu ◽  
Eudald Casals ◽  
Muling Zeng ◽  
Chen Wu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Phase Separation ◽  
Acoustic Wave ◽  
Nonionic Surfactant ◽  
Surface Acoustic Wave ◽  
Inhomogeneous Media ◽  
Particle Manipulation ◽  
Submicron Particle ◽  
Surfactant Aqueous Solution

Acoustic induced nanoparticle patterning and location migration in inhomogeneous media formed in situ.

A Time-Resolved Low-Angle Light Scattering Apparatus. Application to Phase Separation Problems in Polymer Systems

2001 ◽  
Vol 66 (6) ◽  
pp. 973-982 ◽  
Author(s):  
Čestmír Koňák ◽  
Jaroslav Holoubek ◽  
Petr Štěpánek
Keyword(s):  
Phase Separation ◽  
Light Scattering ◽  
Signal To Noise Ratio ◽  
Scattered Light ◽  
Ccd Camera ◽  
Time Resolved ◽  
Polymer Systems ◽  
Software Analysis ◽  
Phase Separation Kinetics ◽  
Small Angle Light Scattering

A time-resolved small-angle light scattering apparatus equipped with azimuthal integration by means of a conical lens or software analysis of scattering patterns detected with a CCD camera was developed. Averaging allows a significant reduction of the signal-to-noise ratio of scattered light and makes this technique suitable for investigation of phase separation kinetics. Examples of applications to time evolution of phase separation in concentrated statistical copolymer solutions and dissolution of phase-separated domains in polymer blends are given.

scholarly journals Fabrication of Multi-Layered Microspheres Based on Phase Separation for Drug Delivery

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 723
Author(s):  
He Xia ◽  
Ang Li ◽  
Jia Man ◽  
Jianyong Li ◽  
Jianfeng Li
Keyword(s):  
Aqueous Solution ◽  
Phase Separation ◽  
Gastric Fluid ◽  
Simulated Gastric Fluid ◽  
Sustained Drug Release ◽  
Simulated Intestinal Fluid ◽  
Glycol Diacrylate ◽  
Emulsion Droplets ◽  
Collection Tube ◽  
Poly Ethylene

In this work, we used a co-flow microfluidic device with an injection and a collection tube to generate droplets with different layers due to phase separation. The phase separation system consisted of poly(ethylene glycol) diacrylate 700 (PEGDA 700), PEGDA 250, and sodium alginate aqueous solution. When the mixture droplets formed in the outer phase, PEGDA 700 in the droplets would transfer into the outer aqueous solution, while PEGDA 250 still stayed in the initial droplet, breaking the miscibility equilibrium of the mixture and triggering the phase separation. As the phase separation proceeded, new cores emerged in the droplets, gradually forming the second and third layers. Emulsion droplets with different layers were polymerized under ultraviolet (UV) irradiation at different stages of phase separation to obtain microspheres. Microspheres with different layers showed various release behaviors in simulated gastric fluid (SGF) and simulated intestinal fluid (SIF). The release rate decreased with the increase in the number of layers, which showed a potential application in sustained drug release.

Phase Separation and Spatial Morphology in Sodium Silicate Glasses by AFM, Light Scattering and NMR

2013 ◽  
Vol 96 (8) ◽  
pp. 2454-2460 ◽  
Author(s):  
Abbas Hodroj ◽  
Patrick Simon ◽  
Pierre Florian ◽  
Marie-Hélène Chopinet ◽  
Yann Vaills
Keyword(s):  
Phase Separation ◽  
Light Scattering ◽  
Sodium Silicate ◽  
Silicate Glasses ◽  
Spatial Morphology
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