Author, as appears in the article.: Donoso R, Reina JA, Giamberini M, De La Flor S, Ferrando F, Cerruti P.

Department: Enginyeria Mecànica Enginyeria Química

e-ISSN: 2073-4360

URV's Author/s: De la Flor Lopez, Silvia / Ferrando Piera, Francesc / Giamberini, Marta / Reina Lozano, José Antonio

Keywords: Thermal properties characterization Polymerization rate Methacrylate monomers Mechanical properties characterization Cosmetics polymerization rate methacrylate monomers mechanical properties characterization cosmetics

Abstract: Mixtures of methacrylic polymers are the most common materials for making composites to be used as resins for dental and cosmetic applications. Some of these mixtures are composed by poly(ethyl methacrylate) (PEMA) and poly(methyl methacrylate) (PMMA), which constitute a solid component to be mixed with a liquid component made out of methacrylate monomers. The reaction between the thermal initiator benzoyl peroxyde (BPO) present in the solid component and the activator of the polymerization process, N,N-dimethyl-p-toluidine (DMT) present in the liquid component, gives rise to thermoset materials. In the present study, different liquid formulations composed by a mixture of two methacrylic monomers, ethyl methacrylate (EMA) and triethylene glycol dimethacrylate (TEGDMA) for cosmetic applications, were prepared and characterized, using a commercial powder (POW) composed by PEMA and PMMA. With the aim of improving workability during final application of the material, it was necessary to slow down the polymerization rate of liquid formulations. Their thermal behavior was investigated by differential scanning calorimetric (DSC) in order to check the polymerization rate. Thermal stability of final materials was determined by thermogravimetric analysis (TGA). Dynamic mechanical thermal analysis (DMTA), microindentation hardness and impact tests were performed on final materials, to assess their performance with respect to standard formulation. The combination of thermal and mechanical properties allows choosing which formulations could be suitable for use in cosmetics.

Thematic Areas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 20734360

Author's mail: silvia.delaflor@urv.cat f.ferrando@urv.cat joseantonio.reina@urv.cat marta.giamberini@urv.cat

Author identifier: 0000-0002-6851-1371 0000-0003-4450-2734 0000-0002-9245-4135 0000-0001-8278-3552

Record's date: 2023-02-18

Journal volume: 10

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2073-4360/10/3/256

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Polymers. 10 (3):

APA: Donoso R, Reina JA, Giamberini M, De La Flor S, Ferrando F, Cerruti P. (2018). Thermal and mechanical characterization of EMA-TEGDMA mixtures for cosmetic applications. Polymers, 10(3), -. DOI: 10.3390/polym10030256

Article's DOI: 10.3390/polym10030256

Entity: Universitat Rovira i Virgili

Journal publication year: 2018

Publication Type: Journal Publications