Preparation and Formation Mechanism of Porous Polyurea by Reaction of Toluene Diisocyanate with Water and Its Application as Adsorbent for Anionic Dye Removal

Shu-sheng Li; Hui Han; Xiao-li Zhu; Xu-bao Jiang; Xiang Zheng Kong

doi:10.1007/s10118-015-1670-7

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Preparation and Formation Mechanism of Porous Polyurea by Reaction of Toluene Diisocyanate with Water and Its Application as Adsorbent for Anionic Dye Removal

PAPER | Updated：2021-06-21

- Preparation and Formation Mechanism of Porous Polyurea by Reaction of Toluene Diisocyanate with Water and Its Application as Adsorbent for Anionic Dye Removal
- Chinese Journal of Polymer Science Vol. 33, Issue 8, Pages: 1196-1210(2015)
- Affiliations：
  
  a.College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
  b.College of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
- Author bio：
  
  **Xiao-li Zhu (朱晓丽), E-mail: chm_zhuxl@ujn.edu.cn
  Xiang Zheng Kong (孔祥正), E-mail: xzkong@ujn.edu.cn
- Funds：
- DOI：10.1007/s10118-015-1670-7
  CLC：
- Received：18 January 2015，
  
  Revised：2015-03-04，
  
  Accepted：08 March 2015，
  
  Published：2015-08
- Accepted：
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Shu-sheng Li, Hui Han, Xiao-li Zhu, et al. Preparation and Formation Mechanism of Porous Polyurea by Reaction of Toluene Diisocyanate with Water and Its Application as Adsorbent for Anionic Dye Removal[J]. Chinese Journal of Polymer Science, 2015, 33(8): 1196-1210.
DOI：

Shu-sheng Li, Hui Han, Xiao-li Zhu, et al. Preparation and Formation Mechanism of Porous Polyurea by Reaction of Toluene Diisocyanate with Water and Its Application as Adsorbent for Anionic Dye Removal[J]. Chinese Journal of Polymer Science, 2015, 33(8): 1196-1210. DOI： 10.1007/s10118-015-1670-7.

摘要

Abstract

A novel and easy one-step protocol for preparation of a new porous material

polyurea (PPU)

is reported

which is accomplished through a precipitation polymerization of toluene diisocyanate (TDI) in mixed solvent of H

O-acetone without need for surfactant and porogen. Effects of TDI concentration

mechanical stirring

solvent composition and TDI addition rate on PPU structure are studied. Surface morphology and pore structure of PPU are characterized by scanning electron microscopy and Hg intrusion. Chemical structure of the PPU polymer is investigated using NMR

XRD and FTIR. Mechanism of pore formation is discussed. The obtained PPU is used as adsorbent for anionic dyes adsorption investigation. Two anionic dyes

remazol brilliant blue R and acid fuchsine

are tested. The results indicate that the as-prepared PPU is of high performance in dye adsorption and recycled use. This study provided therefore a facile route to the preparation of a novel and attractive adsorbent candidate for removal of anionic dyes from wastewaters.

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