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Type: Artigo de periódico
Title: Latex macrocrystal self-assembly dependence on particle chemical heterogeneity
Author: Cardoso, AH
Leite, CAP
Galembeck, F
Abstract: A self-arrayed poly(styrene-co-hydroxyethylmethacrylate) film surface was examined using microscope techniques possessing microchemical capabilities, together with standard (control) techniques. Secondary electron (SEI) and backscattered electron (BEI) images obtained in a field-emission scanning microscope, as well as scanning atomic force (AFM) and electric potential (SEPM) images, show an accumulation of hydrophobic particles around point and line macrocrystal defects. Defects in self-arrayed latex films are thus largely due to latex particle chemical heterogeneities. This result is consistent with the capillary adhesion-dependent models for macrocrystal formation and it shows the importance of latex purification, prior to macrocrystallization. (C) 2001 Elsevier Science B.V. All rights reserved.
Subject: macrocrystals
self-arrayed latex
latex microchemistry
backscattered electron imaging
scanning electric potential microscopy
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0927-7757(00)00782-2
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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