Journal article

Interplay between internal structure and optical properties of thermosensitive nanogels

  • Ledesma-Motolinía, Mónica Programa de Doctorado en Ciencias e Ingeniería de Materiales, Universidad Autónoma Metropolitana-Azcapotzalco, México D.F., Mexico
  • Braibanti, Marco Department of Physics, University of Fribourg, Switzerland
  • Rojas-Ochoa, Luis F. Departamento de Física, CINVESTAV-IPN, México D.F, Mexico
  • Haro-Pérez, Catalina Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, México D.F., Mexico
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  • Colloids and Surfaces A: Physicochemical and Engineering Aspects. - 2015, vol. 482, p. 724–727
English The structural and optical properties of thermosensitive particles, nanogels, are studied by light scattering and refractometry as a function of temperature. Nanogels are composed of poly- N-Isopropopylacrylamide, a polymer that shrinks at temperatures higher than its lower critical solution temperature, 33 °C. The internal nanogel structure obtained by light scattering is well modeled by assuming a constant radial mass density profile convoluted with a Gaussian function. Moreover, we introduce a simple method that allows us to describe the measured temperature-dependent index of refraction of these complex nanoparticles by using their structural information, core dimension and external radius.
Faculté des sciences et de médecine
Département de Physique
  • English
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