NDLI: Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology

Content Provider	Springer Nature Link
Author	Joshi, Ravi G. Provder, Theodore Ziemer, Paul Mao, Wenjing Shen, Weidian Jones, Frank N.
Copyright Year	2008
Abstract	Latexes have many product applications including functioning as a binder in coatings. For many years, coatings researchers in industry as well as in academe have been exploring various modes of crosslinking latexes. Quite often, the goal of preparing crosslinked latexes is to upgrade film properties relative to the film properties of uncrosslinked latexes. In the present report, the synthesis and properties of crosslinkable acrylic latexes prepared with either an internal crosslinker (1,3-butylene glycol dimethacrylate)—“precoalescence crosslinking”—or an external crosslinker (adipic dihydrazide)—“postcoalescence crosslinking”—at various levels of crosslinking were studied. For postcoalescence crosslinking, diacetone acrylamide was copolymerized into the latex to provide sites for subsequent reaction with adipic dihydrazide. Fundamental properties of films cast from the two types of latexes were systematically compared. These properties included gel content, dynamic mechanical properties, nano-indenter hardness and modulus, stress–strain properties as well as the characterization of latex morphology by atomic force microscopy (AFM). In addition, some specific end-use properties were determined. This study assesses the effect of type (precoalescence or postcoalescence) and level of crosslinking on the film formation process and the resulting fundamental and end-use properties as well as resulting latex film morphology.
Starting Page	47
Ending Page	65
Page Count	19
File Format	PDF
ISSN	15470091
Journal	JCT Research
Volume Number	6
Issue Number	1
e-ISSN	19353804
Language	English
Publisher	Springer US
Publisher Date	2008-06-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Precoalescence crosslinking Postcoalescence crosslinking Latex synthesis and process Film morphology End-use properties Stress–strain properties Dynamic mechanical properties Nanoindentation properties Tribology, Corrosion and Coatings Surfaces and Interfaces, Thin Films Polymer Sciences Industrial Chemistry/Chemical Engineering Materials Science
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Colloid and Surface Chemistry Surfaces and Interfaces

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Erratum to: Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology

Erratum to: Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology

Functional latex and thermoset latex films

The diacetone acrylamide crosslinking reaction and its influence on the film formation of an acrylic latex

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Methods for studying the mechanical and tribological properties of hard and soft coatings with a nano-indenter

Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology

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Erratum to: Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology

Erratum to: Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology

Functional latex and thermoset latex films

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Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology