Assembled block copolymer stabilized high internal phase emulsion hydrogels for enhancing oil safety

Zhang, Tao, Xu, Zhiguang, Wu, Yuanpeng and Guo, Qipeng 2016, Assembled block copolymer stabilized high internal phase emulsion hydrogels for enhancing oil safety, Industrial and engineering chemistry research, vol. 55, no. 16, pp. 4499-4505, doi: 10.1021/acs.iecr.6b00039.

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Title Assembled block copolymer stabilized high internal phase emulsion hydrogels for enhancing oil safety
Author(s) Zhang, Tao
Xu, Zhiguang
Wu, Yuanpeng
Guo, QipengORCID iD for Guo, Qipeng
Journal name Industrial and engineering chemistry research
Volume number 55
Issue number 16
Start page 4499
End page 4505
Total pages 7
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2016-04-27
ISSN 0888-5885
Keyword(s) Science & Technology
Engineering, Chemical
Summary Accidental spills and subsequent fires during oil storage and transportation periods cause serious damage to environments. Herein, we present a novel route to enhance oil safety by transforming oils into high internal phase emulsion (HIPE) hydrogels. These HIPE hydrogels are stabilized by solvent- or pH-driven assembled block copolymer (BCP), namely poly(4-vinylpyridine)-block-poly(ethylene glycol)-block-poly(4-vinylpyridine) (4VPm-EGn-4VPm). The assembled BCP shows high efficiency to stabilize HIPE hydrogels with a low concentration of 1.0 (w/v) % relative to the continuous aqueous phase. The volume fraction of the dispersed organic phase can be as high as 89% with a variety of oils, including toluene, xylene, blended vegetable oil, canola oil, gasoline, diesel, and engine oil. These smelly and flammable liquids were formed into HIPE hydrogels and thus their safety was enhanced. As the assembly is pH sensitive, oils trapped in the HIPE hydrogels can be released by simply tuning pH values of the continuous aqueous phase. The aqueous phase containing BCP can be reused to stabilize HIPE hydrogels after naturalization. These assembled BCP stabilized HIPE hydrogels offer a novel and safe approach to preserve and transport these smelly and flammable liquid oils, avoiding environmental damage.
Language eng
DOI 10.1021/acs.iecr.6b00039
Field of Research 010299 Applied Mathematics not elsewhere classified
030306 Synthesis of Materials
059999 Environmental Sciences not elsewhere classified
09 Engineering
03 Chemical Sciences
Socio Economic Objective 850302 Hydrogen Production from Nuclear Energy
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, American Chemical Society
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