Elimination of Surfactants and Small Dyes from Water with Silicasupported Dendritic Amphiphiles

Feng Chen; De-cheng Wan; Ming Jin; Hong-ting Pu

doi:10.1007/s10118-016-1728-1

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Elimination of Surfactants and Small Dyes from Water with Silicasupported Dendritic Amphiphiles

Updated：2021-06-21

- Elimination of Surfactants and Small Dyes from Water with Silicasupported Dendritic Amphiphiles
- Chinese Journal of Polymer Science Vol. 34, Issue 1, Pages: 59-68(2016)
- Affiliations：
  
  a.Institute of Functional Polymers, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
  b.Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai 201804, China
- Author bio：
  
  *De-cheng Wan (万德成), E-mail: wandecheng@tongji.edu.cn
- Funds：
- DOI：10.1007/s10118-016-1728-1
  CLC：
- Received：30 June 2015，
  
  Revised：2015-07-24，
  
  Accepted：18 August 2015，
  
  Published：2016-01
- Accepted：
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Feng Chen, De-cheng Wan, Ming Jin, et al. Elimination of Surfactants and Small Dyes from Water with Silicasupported Dendritic Amphiphiles[J]. Chinese Journal of Polymer Science, 2016, 34(1): 59-68.
DOI：

Feng Chen, De-cheng Wan, Ming Jin, et al. Elimination of Surfactants and Small Dyes from Water with Silicasupported Dendritic Amphiphiles[J]. Chinese Journal of Polymer Science, 2016, 34(1): 59-68. DOI： 10.1007/s10118-016-1728-1.

摘要

Abstract

Silica-supported branched polyethylenimine (Sil@PEI) is a conventional adsorbent and shows a limited affinity to anionic surfactants and small dyes (

= 10

-10

L/mol). If the PEI is alkylated with cetyl groups (C16)

the

of the resulting adsorbents (Sil@PEI@C16-x

where x is the fraction of PEI units being alkylated) is significantly improved. Optimization shows that Sil@PEI@C16-0.15 can best reduce aqueous surfactants to a residue around 10

-10

mol/L; while Sil@PEI@C16- 0.6 can reduce even small aqueous dyes to a residue below 10

-10

mol/L

nearly 10

-fold lower than that by Sil@PEI. The adsorbents are well recyclable. It is believed that in the case of dyes

the dense cetyl shell can isolate the PEI from the bulky water and thus suppress the competitive binding by water; while in the case of surfactants

the semiclosed cetyl shell can simultaneously meet electrostatic complement and hydrophobic complement to the surfactants.

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