Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 275: Issue 1
Radiation induced polymerization of isoprene: A spectroscopic study
Authors: F. Cataldo 1 , O. Ursini 2 , and E. Lilla 2
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  • 1 Lupi Chemical Research Via Casilina 1626/A 00133 Rome Italy
  • | 2 Institute of Chemical Methodologies CNR Via Salaria Km. 29,300 00016 Monterotondo Stazione (Rome) Italy
Pages:
9–16
Online Publication Date:
06 Sep 2007
Publication Date:
01 Jan 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10967-006-6981-2
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Abstract  

Isoprene polymerizes under the action of γ-radiation from a 60Co source yielding a low molecular weight polyisoprene which remains soluble in the unreacted monomer. The electronic absorption spectrum of polyisoprene oligomer in isoprene monomer has been explained using squalene, a polyisoprene hexamer, as model compound. The radiation chemical yield for polyisoprene formation has been estimated from both gravimetric and spectrophotometric data pertaining the amount of polymer formed. An average G value of 35 molecules/100 eV has been determined suggesting that the polymerization mechanism involves free radicals. The chemical structure of the resulting polyisoprene radio-oligomer has been determined by FT-IR spectroscopy and found identical to that of a reference polyisoprene sample prepared by a chemically-initiated free radical polymerization process. The structure determination by FT-IR spectroscopy has been reported in detail.

Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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