A new polyamide adjusted triazinyl-beta-cyclodextrin side group embedded magnetic nanoparticles for bacterial capture

作者：Abdolmaleki Amir; Mallakpour Shadpour; Mahmoudian Manzar; Sabzalian Mohammad R

来源：Chemical Engineering Journal, 2017, 309: 321-329.

DOI：10.1016/j.cej.2016.10.063

• Poly(isophthalamide)
• Direct polycondensation
• beta-Cyclodextrin
• Magnetic nanoparticles
• Bacteria capture

A new beta-cyclodextrin grafted on poly(isophthalamide)/magnetic nanoparticles (CDPA-MNPs) nanocomposite was prepared through magnetic nanoparticles (Fe3O4) embedding onto beta-cyclodextrin groups grafted on polyamide via the simple one-pot co-precipitation of aqueous Fe2+/Fe3+ salts method. A new wholly aromatic polyamide was synthesized via the phosphorylation polyamidation reaction promoted by triphenyl phosphite (TPP) and tetrabutylammonium bromide (TBAB) as a green solvent and catalyst. Then monochlorotriazinyl-beta-cyclodextrin (MCT-beta-CD) was treated to aromatic polyamide via a nudeophilic substitution reaction and magnetic nanoparticles (MNPs), approximately 10 nm in diameter, immobilized on the polyamide. The co-presence of the hydrophilic CD molecules and MNP5 were applied as an efficient novel nano-adsorbent for the physically removing of both Gram-positive Bacillus cereus (B. Bacillus) and Gram-negative Escherichia coli (E. coli) in water using an external magnet.

• 出版日期2017-2-1