Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/101328
Type: Artigo de periódico
Title: Elemental Mapping In Natural Rubber Latex Films By Electron Energy Loss Spectroscopy Associated With Transmission Electron Microscopy
Author: Rippel M.M.
Leite C.A.P.
Galembeck F.
Abstract: Element distribution maps from Hevea brasiliensis natural rubber latex thin films were obtained, by electron energy-loss spectroscopic imaging in a low-energy (80 kV) transmission electron microscope. C, N, O, P, Na, Ca, Mg, Al, Si, and S maps are presented for latex fractionated by centrifugation, either followed by dialysis or not. Most elements forming non-carbon compounds are concentrated in small, electron-dense spots surrounded by a carbon-rich matrix of polymer, thus showing that the rubber is filled with small particles compatible with the polyisoprene matrix. Ca distribution is unique, since it closely parallels the C distribution, evidencing an important role for -COO--Ca2+-COO- ionic bridges in the structure of natural rubber.
Editor: 
Rights: fechado
Identifier DOI: 10.1021/ac0111661
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0036606334&partnerID=40&md5=7830839dc8eb0e81d0bb02aed0a5f013
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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