Synthesis and characterization of AN/EGDMA-based adsorbents for phenol adsorption

In this work, acrylonitrile (AN)/ethylene glycol dimethacrylate (EGDMA) cross-linked polymeric adsorbents were synthesized by the suspension polymerization method. The adsorbents were prepared varying the EGDMA cross-linker ratio from 100 to 60%. It was found that the swelling factor and the specifi...

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Bibliographic Details
Published in:Reactive & functional polymers 2017-08, Vol.117, p.112-119
Main Authors: Galicia-Aguilar, José Alberto, Santamaría-Juárez, Juana Deisy, López-Badillo, Maribel, Sánchez-Cantú, Manuel, Varela-Caselis, Jenaro Leocadio
Format: Article
Language:English
Subjects:
Acrylonitrile
Addition polymerization
Adsorbent polymers
Adsorbents
Adsorption
Chemical synthesis
Cross-link
Crosslinking
Crosslinking polymerization
Diffusion rate
EGDMA
Ethylene glycol
Phenol
Phenols
Polymerization
Polymers
Surface chemistry
Suspension polymerization
Thermodynamic properties
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Summary:In this work, acrylonitrile (AN)/ethylene glycol dimethacrylate (EGDMA) cross-linked polymeric adsorbents were synthesized by the suspension polymerization method. The adsorbents were prepared varying the EGDMA cross-linker ratio from 100 to 60%. It was found that the swelling factor and the specific surface area changed inversely with the crosslinking degree. In addition, the thermal characterization indicated that polymers stability increased as the crosslinking degree decreased. The polymers were tested as phenol adsorbents and it was found that the higher uptake level was reached when the acrylonitrile concentration increased in the polymer. Adsorption isotherm was determined fitting the Langmuir model, indicating a homogeneous surface of the adsorbents. Moreover, the kinetic studies indicated that the rate controlling step corresponded to the intraparticle diffusion since adsorption is promoted when the adsorbent is swollen.
ISSN:1381-5148
1873-166X
DOI:10.1016/j.reactfunctpolym.2017.06.007