title: Synthesis and Characterization of Co-polymers Based on Methyl Methacrylate and 2-Hexyl Acrylate Containing Naphthopyrans for a Light-Sensitive Contact Lens.
abstract: Three different naphthopyrans were incorporated in co-polymers of methyl methacrylate (MMA) and 2-ethylhexyl acrylate (EHA), with and without cross-linking with ethyleneglycol dimethacrylate (EGDMA), by a free radical polymerization method. The obtained materials were characterised in terms of some of their chemical and physical properties that could be important for the final functional properties of the envisaged application. Despite other important functional properties that should be evaluated in the near future, the system based in the physical entrapment of 3,3-bis(4-methoxyphenyl)-3H-naphtho [2,1-b]pyran presented a good potential for its application as novel light-sensitive contact lenses.
authors.affiliation: a Departamento de Engenharia Mecânica e Gestão Industrial, Faculdade de Engenharia da Universidade do Porto, 4200-465 Porto, Portugal.
authors.forename: Cláudia R J O D
authors.initials: CR
authors.lastname: Nabais
authors.forename: B Mark
authors.initials: BM
authors.lastname: Heron
authors.forename: Hermínio C
authors.initials: HC
authors.lastname: de Sousa
authors.forename: Maria H
authors.initials: MH
authors.lastname: Gil
authors.forename: Abílio J F N
authors.initials: AJ
authors.lastname: Sobral
mesh_terms: D000179:Acrylates / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D003261:Contact Lenses; D008027:Light; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry*; D020366:Methylmethacrylate / Q000737:chemistry*; D055668:Photochemical Processes; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry* / Q000528:radiation effects; D013057:Spectrum Analysis; D013499:Surface Properties; D044366:Transition Temperature
chemical_list: D000179:Acrylates; D008689:Methacrylates; D011108:Polymers; D020366:Methylmethacrylate; C004919:ethylene dimethacrylate; C036758:2-ethylhexyl acrylate