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Article Dans Une Revue Polymer Chemistry Année : 2018

Smart self-assembled microgel films as encapsulating carriers for UV-absorbing molecules

Résumé

This article reports the ability of oligo(ethylene glycol)-based stimuli-responsive microgels to spontaneously form self-assembled microgel films under different conditions such as the presence or absence of water soluble polymers (WSP, formed during the microgel synthesis) and the type and/or amount of salt in the microgel dispersion. The unusually high encapsulation of four different cosmetically active molecules has been achieved via hydrophobic interactions and hydrogen-bonding interactions between the -OH groups of active molecules and ether functions of self-assembled microgel films. The loaded-films present absorption higher than 50% of the UVA-UVB wavelengths and can be used for skin protection against sun. The nature of the interactions was determined by NOESY-NMR spectroscopy in the gel state. Moreover, confocal microscopy was used to show that the water solubility of the active molecule plays a crucial role in obtaining a more homogeneous distribution in films after loading.

Domaines

Chimie
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Dates et versions

hal-01736853 , version 1 (18-03-2018)

Identifiants

Citer

Garbine Aguirre, Abdel Khoukh, P. Taboada, K. Chougrani, Valérie Alard, et al.. Smart self-assembled microgel films as encapsulating carriers for UV-absorbing molecules. Polymer Chemistry, 2018, 9 (10), pp.1155-1159. ⟨10.1039/c8py00146d⟩. ⟨hal-01736853⟩
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