Resolving the Film-Formation Dilemma with Infrared Radiation-Assisted Sintering

The film formation of an acrylate latex with a glass-transition temperature of 38 °C has been achieved through the use of near-infrared (NIR) radiative heating. A hard, crack-free coating was obtained without the addition of plasticizers. Sintering of acrylate particles was confirmed through measure...

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Bibliographic Details
Published inLangmuir Vol. 27; no. 6; pp. 2176 - 2180
Main Authors Georgiadis, Argyrios, Bryant, Peter A, Murray, Martin, Beharrell, Philip, Keddie, Joseph L
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 15.03.2011
Subjects
Chemistry
Exact sciences and technology
General and physical chemistry
Viscosity
Atomic force microscopy
Transition temperature
Deformation
Film
Polymer
Convection
Latex
Particle
Glass transition
Heating
Sintering
Infrared radiation
Models
Rheological properties
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Summary:The film formation of an acrylate latex with a glass-transition temperature of 38 °C has been achieved through the use of near-infrared (NIR) radiative heating. A hard, crack-free coating was obtained without the addition of plasticizers. Sintering of acrylate particles was confirmed through measurements using atomic force microscopy. The addition of an NIR-absorbing polymer increased the rate of particle deformation such that it was significantly greater than obtained in a convection oven at 60 °C. The results are consistent with a lower polymer viscosity under infrared radiation, according to a simple analysis using a standard model of sintering.
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ISSN:0743-7463
1520-5827
DOI:10.1021/la200429j