Preparation of acrylonitrile/acrylamide copolymer beads via a redox method and their adsorption properties after chemical modification

Siti Nurul Ain Md Jamil, Mastura Khairuddin, Rusli Daik

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Poly(acrylonitrile-co-Acrylamide) [poly(AN-co- AM)] was prepared via a redox method, with sodium bisulfite and potassium persulphate as the initiators. High yield was attained in up to 76% of monomer conversion within 3 h of reaction time. The copolymers were then chemically modified with hydroxylamine hydrochloride to obtain amidoxime functional groups in the polyacrylonitrile (PAN) system. The role of the amidoxime group is to form a chelating ion-exchange network based on acrylonitrile for the adsorption of heavy metal ions in aqueous solution. Based on the Fourier transform infrared spectra, the appearance of a strong band at the regions of 1680 and 3300-3400 cm-1 due to the stretching vibration of C=O and NH2 groups, respectively, confirmed the copolymerization of acrylamide into the PAN system. In the case of modified copolymers, there was an appearance of broad bands at the regions of ∼3300 and ∼900 cm-1, which corresponded to the stretching vibrations of O-H and =N-O, respectively, from the oxime group. The scanning electron microscopy showed that the average size of the copolymer particles was ∼149 nm, and the average size increased to ∼217 nm in the case of the modified copolymer. The amidoximed poly(AN-co-AM) was analyzed by inductively coupled plasma to investigate its adsorption behavior toward Cu(II).

Original languageEnglish
Pages (from-to)45-54
Number of pages10
JournalE-Polymers
Volume15
Issue number1
DOIs
Publication statusPublished - 1 Jan 2015

Fingerprint

Acrylonitrile
acrylonitriles
Acrylamide
Chemical modification
chemical properties
beads
copolymers
Copolymers
Adsorption
preparation
adsorption
polyacrylonitrile
Polyacrylonitriles
Stretching
vibration
Hydroxylamine
Oximes
hydrochlorides
Inductively coupled plasma
copolymerization

Keywords

  • amidoxime
  • chelate
  • chemical modification
  • copolymer
  • heavy metal ions
  • hydroxylamine hydrochloride
  • ligands
  • oxime group
  • polyacrylamide
  • polyacrylonitrile

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Polymers and Plastics

Cite this

Preparation of acrylonitrile/acrylamide copolymer beads via a redox method and their adsorption properties after chemical modification. / Md Jamil, Siti Nurul Ain; Khairuddin, Mastura; Daik, Rusli.

In: E-Polymers, Vol. 15, No. 1, 01.01.2015, p. 45-54.

Research output: Contribution to journalArticle

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