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Colloid and Polymer Science

, Volume 293, Issue 9, pp 2609–2615 | Cite as

Janus nanosheets by emulsion interfacial crosslinking of reactive surfactants

  • Qiguang Wang
  • Yijiang Liu
  • Xiaozhong Qu
  • Qian Wang
  • Fuxin Liang
  • Zhenzhong Yang
Original Contribution

Abstract

Polymeric Janus nanosheets are synthesized by crosslinking the self-assembled monolayer formed by a reactive polymer surfactant at an oil/water interface. At low temperature, while the hydrophobic segments are frozen by the internal phase of solid paraffin, the reactive hydrophilic carboxylic acid groups exposed to the external aqueous phase can be selectively crosslinked to form an intact nanomembrane. The Janus nanosheets can be created after breaking the nanomembrane into pieces under ultrasonication during dissolution of the paraffin phase. Many approaches can be used to crosslink the nanomembrane at the interface, for example multiple amines and multivalent cationic ions. The polymeric Janus nanosheets can be easily functionalized to derive a series of composite nanosheets. The composite Janus nanosheets can serve as new solid surfactants which are responsive to pH or magnetic field.

Keywords

Janus nanosheets Polymer Composite Emulsion Interface Crosslinking 

Notes

Acknowledgments

Yang Zhenzhong and Liang Fuxin acknowledge the support by MOST of China (2012CB933200) and NSF of China (51233007, 51173191, 51173192, and 51203169).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.State Key Laboratory of Polymer Physics and Chemistry, Institute of ChemistryChinese Academy of SciencesBeijingChina

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