title: Evaluation of thermosensitive microspheres as potential components for sun-protectors.
abstract: In this study thermosensitive polymeric microspheres obtained in former research were evaluated in vitro for their photoprotective activity. The UVA/UVB ratio was assessed at so called shelf temperature, i.e., at 25 degrees C, and at elevated temperature of 45 degrees C. The evaluated polymers absorb higher levels of UV radiation, when heated from 25 degrees C to 45 degrees C. The MS1 polymer may be defined as polymer with high efficiency in the terms of gaining protection against UVA radiation, when heated. The MS2 absorbs both UVA and UVB radiation, and may be considered, as most protective, when heated to 45 degrees C. The equalized and less strong activity has the polymer MS3 when heated, with lipophilic radical implemented during synthesis.
authors.affiliation: University of Maribor, Department for Textile Materials and Design, Laboratory for Chemistry Dyes and Polymers, Slovenia. witold@ktpl.am.wroc.pl
authors.forename: Witold
authors.initials: W
authors.lastname: Musiał
authors.forename: Vanja
authors.initials: V
authors.lastname: Kokol
authors.forename: Bojana
authors.initials: B
authors.lastname: Voncina
mesh_terms: D000178:Acrylamides / Q000737:chemistry* / Q000528:radiation effects; D019540:Area Under Curve; D006358:Hot Temperature; D008422:Materials Testing; D008863:Microspheres; D011108:Polymers / Q000737:chemistry* / Q000528:radiation effects*; D013473:Sunscreening Agents / Q000737:chemistry* / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D000178:Acrylamides; D011108:Polymers; D013473:Sunscreening Agents; C067295:N-isopropylacrylamide