Details

Autor(en) / Beteiligte

• Lee, Wai Peng
• Gundabala, Venkata R
• Akpa, Belinda S
• Johns, Michael L
• Jeynes, Chris
• Routh, Alexander F

Titel

Distribution of Surfactants in Latex Films:  A Rutherford Backscattering Study

Ist Teil von

• Langmuir, 2006-06, Vol.22 (12), p.5314-5320

Ort / Verlag

Washington, DC: American Chemical Society

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Uneven distribution of surfactant in dried latex films can affect the final film properties such as its water-resistance, gloss, and adhesiveness. Therefore, it is important to understand the driving force for surfactant transport during drying. In this paper, the accumulation of surfactant on the surface of poly(styrene-co-butyl acrylate) latex is studied using Rutherford Backscattering (RBS) and compared with results from a model that is based on the diffusive transport of particles and surfactant. Experimentally, a 30−50 nm thick surface layer, rich in surfactant, is seen and the concentration in the bulk of the film, obtained from RBS, agrees, at least qualitatively, with the model predictions for two of the surfactants tested.