Article (Scientific journals)
Influence of end group and molecular weight on polybutadiene fingerprint secondary ion mass spectra
Vanden Eynde, X.; Bertrand, P.; Dubois, Philippe et al.
1998In Macromolecules, 31 (19), p. 6409-6416
Peer Reviewed verified by ORBi
 

Files


Full Text
Vanden Eynde X 1998 Macromolecules 6409.pdf
Publisher postprint (108.52 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
anionic polymerization; diene; mass spectrometry
Abstract :
[en] Polybutadiene samples of different molecular weight have been synthesized by anionic polymerization as initiated by sec-butyllithium with low polydispersity and a major content of 1,2-vinyl units. They have been analyzed by time-of-flight secondary ion mass spectrometry (ToF-SIMS) in order to investigate the sensitivity of this method toward the sec-butyl end group and toward the molecular weight. The SIMS spectra show the characteristic fragment of the end group, C4H9+ at m/z = 57, whose the peak intensity is strongly dependent on the polymer molecular weight, as is the case for almost all the fragment intensities. A model consistent with the peak intensity variations is used to give some new insights into the fragmentation mechanism at the end groups and within the main chain. Moreover, the analysis of the end group fragment allows Mn to be readily determined up to Mn = 4 × 104 from, for example, the Y(53)/Y(57) intensity ratio where Y(53) is the intensity of the deprotonated repeat unit ([M − H]+). Other Mn calibration methods have also been used and are discussed in terms of their accuracy and physical meaning.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Vanden Eynde, X.;  Université catholique de Louvain (UCL) > Unité de Physico-Chimie et de Physique des Mateériaux (PCPM)
Bertrand, P.;  Université catholique de Louvain (UCL) > Unité de Physico-Chimie et de Physique des Mateériaux (PCPM)
Dubois, Philippe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Influence of end group and molecular weight on polybutadiene fingerprint secondary ion mass spectra
Publication date :
22 September 1998
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
Amer Chemical Soc, Washington, United States - Washington
Volume :
31
Issue :
19
Pages :
6409-6416
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Région wallonne [BE]
Available on ORBi :
since 23 June 2009

Statistics


Number of views
23 (2 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
10
Scopus citations®
without self-citations
10
OpenCitations
 
9

Bibliography


Similar publications



Contact ORBi