Issue 4, 2006

Fabrication of porous polymer particles with high anion exchange capacity by amination reaction in aqueous medium

Abstract

Micrometre-sized porous polymer particles were fabricated by amination of chlorinated aliphatic polymer beads (chlorinated polypropylene (CPP), chlorinated polyethylene (CPE), and polyvinyl chloride co-vinyl acetate (PVCVAc)) in aqueous amine (polyethylenimine (PEI) and triethylamine (TEA)) solution. The polymer particles obtained were characterized by SEM, elemental analysis, titration, N2 adsorption, FT-IR, solid-state NMR and thermogravimetry (TG). CPP–PEI, CPE–PEI, and PVCVAc–PEI had honeycomb-like pores whereas rugged textures with pores were developed in CPP–TEA, and skeleton-like pores were formed in PVCVAc–TEA. Aminated samples exhibit a BET surface area of 4–12 m2 g−1 and an anion exchange capacity of 1.10 to 4.27 mmol g−1. The membranes fabricated with CPP–PEI and PVCVAc–PEI exhibited ionic conductivities as high as 4.5 × 10−2 and 0.48 × 10−2 S cm−1, respectively. As a result, the hydrothermal amination could be an effective way to aminate chlorinated polymers without using organic solvents.

Graphical abstract: Fabrication of porous polymer particles with high anion exchange capacity by amination reaction in aqueous medium

Article information

Article type
Paper
Submitted
07 Oct 2005
Accepted
13 Jan 2006
First published
30 Jan 2006

Green Chem., 2006,8, 386-389

Fabrication of porous polymer particles with high anion exchange capacity by amination reaction in aqueous medium

J. Liu, J. Yao, H. Wang and K. Chan, Green Chem., 2006, 8, 386 DOI: 10.1039/B514262H

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