Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 12, 2014
Previous Article Next Article

CO2-responsive diethylaminoethyl-modified lignin nanoparticles and their application as surfactants for CO2/N2-switchable Pickering emulsions

Author affiliations

Abstract

Water-insoluble lignin is modified via atom transfer radical polymerization (ATRP) grafting of 2-(diethylamino)ethyl methacrylate (DEAEMA). These lignin-g-DEAEMA samples can be easily dispersed in water upon CO2 bubbling. They can also be quickly precipitated out by N2 bubbling. The CO2/N2-switchability of dispersion/precipitation is correlated to the graft density and chain length of DEAEMA units. This gas-switchable feature gives the lignin materials a wide range of potential applications. Demonstrated in this work is the use of lignin-g-DEAEMA as a surfactant for Pickering emulsion. An emulsion of decane is prepared with the lignin nanoparticles and it can be demulsified and re-emulsified by bubbling of the two gases. The emulsification/demulsification processes are highly reversible and easily repeatable. This work represents an innovative approach in developing value-added lignin materials.

Graphical abstract: CO2-responsive diethylaminoethyl-modified lignin nanoparticles and their application as surfactants for CO2/N2-switchable Pickering emulsions

Back to tab navigation

Article information


Submitted
03 Jul 2014
Accepted
11 Aug 2014
First published
13 Aug 2014

Green Chem., 2014,16, 4963-4968
Article type
Paper
Author version available

CO2-responsive diethylaminoethyl-modified lignin nanoparticles and their application as surfactants for CO2/N2-switchable Pickering emulsions

Y. Qian, Q. Zhang, X. Qiu and S. Zhu, Green Chem., 2014, 16, 4963
DOI: 10.1039/C4GC01242A

Social activity

Search articles by author

Spotlight

Advertisements