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Molecular Weight of Step-Growth Polymers

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The extent of the...

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Synthesis of PolyN-isopropylacrylamide Janus Microhydrogels for Anisotropic Thermo-responsiveness and Organophilic/Hydrophilic Loading Capability

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Published on: February 27, 2016

"Microflower-Templated" Janus Sheets: Synthesis and Application in Stabilizing Foams.

Cailiang Zhang¹, Xinnan Ma², Jingli Xue¹

¹College of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.

Langmuir : the ACS Journal of Surfaces and Colloids

|April 17, 2024

Summary

Researchers developed a simple method to create Janus sheets using microflowers as templates. These Janus sheets effectively stabilize foam and enhance protein separation from wastewater.

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Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

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Published on: January 25, 2018

Area of Science:

Materials Science
Biotechnology
Separation Science

Background:

Janus sheets are versatile materials with applications in stabilization and separation.
Existing methods for Janus sheet fabrication can be complex and multi-step.
Biological microflowers offer a unique templating approach for novel material synthesis.

Purpose of the Study:

To develop a facile method for fabricating Janus sheets using biological microflowers as sacrificial templates.
To investigate the application of these microflower-templated Janus sheets (MF-JNSs) as foam stabilizers in whey soybean protein (WSP) separation.
To evaluate the efficiency of MF-JNSs in enhancing WSP recovery and enrichment from soybean whey wastewater (SWW).

Main Methods:

Fabrication of MF-JNSs via sequential attachment of protamine and silica onto BSA@Cu3(PO4)2-MF templates, followed by template removal.
Characterization of MF-JNSs using SEM, TEM, AFM, XRD, and FT-IR.
Assessment of emulsion stabilizing capability and foam stabilization performance in SWW.

Main Results:

A simple, one-step method for producing Janus sheets without external force treatment was established.
MF-JNSs demonstrated effective Pickering emulsion stabilization, delaying emulsion breakage.
Significant enhancement in foam half-life and foam height for SWW was observed.
Improved WSP recovery (81 ± 0.28%) and enrichment ratio (1.20 ± 0.05%) from SWW via foam separation.

Conclusions:

The microflower-templated Janus sheet fabrication method is simple, feasible, and efficient.
MF-JNSs show excellent potential as foam stabilizers in separation processes.
This approach offers a promising strategy for improving the separation and enrichment of valuable proteins from wastewater.