Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/25128
Type: Artigo de periódico
Title: Poly(ethylene glycol) or Poly(ethylene oxide)?: Magnitude of end-group Contribution to the Partitioning of Ethylene Oxide Oligomers and Polymers between Water and Organic Phases
Author: Spitzer, Marcos
Sabadini, Edvaldo
Loh, Watson
Abstract: PEO partitioning from water to CH2Cl2 and CHCl3 increases with its molar mass, leveling off at ca. 3 000 g mol-1. Such a behaviour is related to PEO end-group contributions, suggesting a polyglycol to polyether transition at ca. 3 000 g mol-1.
A partição de PEO de água para CH2Cl2 e CHCl3 aumenta com a sua massa molar, até se tornar constante em torno de 3 000 g mol-1. Estes resultados revelam que a partição de PEO é bastante sensível à contribuição dos grupos hidroxila, sugerindo a transição de caráter poliglicol para poliéter em torno de 3000 g mol-1.
Subject: poly(ethylene glycol)
poly(ethylene oxide)
polymer partitioning
polymer fractionation
biphasic systems
end-group contribution
Editor: Sociedade Brasileira de Química
Rights: aberto
Identifier DOI: 10.1590/S0103-50532002000100002
Address: http://dx.doi.org/10.1590/S0103-50532002000100002
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000100002
Date Issue: 1-Feb-2002
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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