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Ag(I) Catalyzed Grafting of Acrylonitrile onto Gum Arabic by Ce(IV) in H2SO4 Medium : A Kinetic Study
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-12-04
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Grafting of Acrylonitrile (AN) onto water-soluble polymer Gum arabic (GA) was carried out using ceric ammonium sulfate [Ce(IV)] as initiator in the presence and absence of Ag(I) in H2SO4 medium at 313 K.
The rate of oxidation (Roxi), rate of grafting (Rg), and grafting efficiency (GE) were determined for catalyzed and uncatalyzed grafting and suitable mechanism was proposed to explain the observed results.
No homopolymerization in the absence of GA indicates that the polymer obtained is purely a graft copolymer.
A probable mechanism involving the formation of Ag(I)-GA adduct followed by its oxidation with Ce(IV) to give Ag(II)-GA adduct, and its decomposition to give initiating radicals is proposed to explain the observed results.
The graft polymer was characterized using Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), X-ray diffraction, and scanning electron microscopy (SEM) considering GA as reference.
American Psychological Association (APA)
Thota, Geeta& Srinivas, P.. 2011. Ag(I) Catalyzed Grafting of Acrylonitrile onto Gum Arabic by Ce(IV) in H2SO4 Medium : A Kinetic Study. ISRN Physical Chemistry،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-510114
Modern Language Association (MLA)
Thota, Geeta& Srinivas, P.. Ag(I) Catalyzed Grafting of Acrylonitrile onto Gum Arabic by Ce(IV) in H2SO4 Medium : A Kinetic Study. ISRN Physical Chemistry No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-510114
American Medical Association (AMA)
Thota, Geeta& Srinivas, P.. Ag(I) Catalyzed Grafting of Acrylonitrile onto Gum Arabic by Ce(IV) in H2SO4 Medium : A Kinetic Study. ISRN Physical Chemistry. 2011. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-510114
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-510114