| Attributs | Valeurs |
|---|
| type
| |
| Is Part Of
| |
| Subject
| |
| Title
| - Effect of Ionomeric Behavior on the Viscoelastic Properties andMorphology of Carboxylated Latex Films
|
| has manifestation of work
| |
| related by
| |
| Author
| |
| Abstract
| - The viscoelastic properties of a series of carboxylatedstyrene/butadiene latexes weredetermined using dynamic mechanical spectroscopy. The viscoelasticproperties of the latex films werefound to depend on the pH of the latex and the type of neutralizationions present in the latex. Thischange in the viscoelastic properties is explained by the change in theionomeric characteristics of thelatex and a change of morphology of the latex film as determined usingtransmission electron microscopy.At low pH, the low-Tg (glass-transitiontemperature) essentially noncarboxylated bulk polymer phaseisoften the continuous phase with the high-Tgcarboxylated interfacial polymer as the dispersed phase.Asthe mobility of the interfacial polymer decreases with increasingionomeric characteristic with increasingpH, the morphology changes to one in which thehigh-Tg carboxylated interfacial polymer is thecontinuousphase.
|
| article type
| |
| is part of this journal
| |
