11 documents found, page 1 of 2
Photoluminescent ionic liquid-poly(vinylidene fluoride) hybrid materials for UV...
Cruz, B. D. D.; Pereira, N.; García Díez, Ander; Botelho, G.; Lanceros-Méndez, S.; Bermudez, V. de Zea; Correia, Daniela M.Smart multifunctional materials have been increasingly applied in different fields of knowledge. In particular, photoluminescent materials have been explored for displays, radiation detection, lamps or anti-counterfeiting applications, among others. This work reports the development of photoluminescent materials based on poly (vinylidene fluoride) (PVDF) polymer incorporating different contents (0, 5, 10, and 2...
Photoluminescent alginate-based composite inks for anti-counterfeiting security...
Cruz, B. D. D.; Correia, Daniela M.; Polícia, R.; Pereira, N.; Nunes, P.; Fernandes, M.; Tubio, C. R.; Botelho, G.; Lanceros-Méndez, S.Natural polymers have been increasingly explored for a wide range of applications as smart materials due to their unique properties, abundance, and sustainability attributes. In the present work, novel luminescent composite films based on sodium alginate (SA) and different amounts of the compounds sodium tetra(2- thenoyltrifluoroacetonate)europate (III) (Na[Eu(tta)4]) (5, 10 and 20% wt.) and 1-butyl-3-methylimi...
Reusable nanocomposite-filters for arsenite and arsenate dual real effluents re...
Salazar, H.; Martins, P. M.; Fernandes, Margarida Maria Macedo; Costa, P.; Ferdov, S.; Botelho, G.; Lanceros-Méndez, S.A membrane reactor (MR), combining adsorption and membrane separation processes, represents a new hybrid and promising technology for arsenic-contaminated water treatment. This work reports on nanocomposite filters (NCFs) based on poly (vinylidene fluoride-hexafluoropropylene), PVDF-HFP, containing yttrium carbonate (Y2(CO3)3) and magnetite (Fe3O4) to adsorb neutral and anionic species of As(III) and As(V), in ...
Thermal degradation behavior of ionic liquid/ fluorinated polymer composites: E...
Dias, J. C.; Correia, Daniela Maria Silva; Costa, C. M.; Botelho, G.; Vilas-Vilela, J. L.; Lanceros-Méndez, S.This work reports on the evaluation of the thermal degradation of poly(vinylidene fluoride) (PVDF) and PVDF co-polymer (PVDF-TrFE, PVDF-HFP and PVDF-CTFE) composite films with different imidazolium ionic liquids (ILs). The influence of the IL type, including cation and anion type, cation chain length and content up to 40 wt% were evaluated. Independently of the fluorinated polymer type, all neat samples present...
Distillates composition obtained of fermented Arbutus unedo L. fruits from diff...
Caldeira, I.; Gomes, F.; Mira, Helena; Botelho, G.The fruits of Arbutus unedo L., a shrub that grows spontaneously in countries around the Mediterranean basin, are traditionally harvested and used for the production of a distilled spirit. The main objective of this work is to compare the chemical profile of distillates obtained from fermented A. unedo fruits. Fifteen distinct distillates were obtained from ten clones and five seedlings, and they were evaluated...
An experimental and theoretical investigation on the optical and photocatalytic...
La Porta, F. A.; Nogueira, A. E.; Gracia, Lourdes; Pereira, W. S.; Botelho, G.; Mulinari, T. A. [UNESP]; Andres, Juan; Longo, E. [UNESP]Made available in DSpace on 2018-11-28T03:51:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-04-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Generalitat Valenciana; Ministerio de Economia y Competitividad (Spain); Spanish Brazilian program; Fr...
Study of structural and optical properties of CaMoO4 nanoparticles synthesized ...
Botelho, G.; Nogueira, I. C.; Moraes, E.; Longo, E. [UNESP]Made available in DSpace on 2018-12-11T17:30:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-11-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Calcium molybdate (CaMoO4) nanoparticles were synthesized by using a rapid assisted-microwave solvothermal method. X-ray diffraction measurements, Fourier transform Raman ...
Electromechanical actuators based on poly(vinylidene fluoride) with [N-1 (1) (1...
Dias, J. C.; Martins, Marcos; Ribeiro, S.; Silva, M. M.; Esperança, J. M. S. S.; Ribeiro, C.; Botelho, G.; Costa, C. M.; Lanceros-Mendez, S.Actuators based on electroactive polymers are increasingly used in applications including microelectronic devices and artificial muscles, demanding low voltage operation and controllable switching response. This work reports on the preparation of electroactive actuators based on poly(vinylidene fluoride) (PVDF) composites with 10, 25, and 40 wt% N,N,N-trimethyl-N-(2-hydroxyethyl) ammonium bis(trifluoromethylsul...
Effect of filler content on morphology and physical-chemical characteristics of...
Lopes, A. C.; Ribeiro, C.; Sencadas, V.; Botelho, G.; Lanceros-Mendez, S.Poly(vinylidene fluoride) electrospun membranes have been prepared with different NaY zeolite contents up to 32%wt. Inclusion of zeolites induces an increase of average fiber size from ~200 nm in the pure polymer up to ~500 nm in the composite with 16%wt zeolite content. For higher filler contents, a wider distribution of fibers occurs leading to a broader size distributions between the previous fiber size valu...
PHB-PEO electrospun fiber membranes containing chlorhexidine for drug delivery ...
Fernandes, J. G.; Correia, D. M.; Botelho, G.; Padrão, J.; Ribeiro, C.; Lanceros-Mendez, S.; Sencadas, V.Fiber meshes of poly(hydroxybutyrate) (PHB) and poly(hydroxybutyrate)/ poly(ethylene oxide) (PHB/PEO) with different concentrations of chlorhexidine (CHX) were prepared by electrospinning, for assessment as a polymer based drug delivery system. The electrospun fibers were characterized at morphological, molecular and mechanical levels. The bactericidal potential of PHB and PHB/PEO electrospun fibers with and wi...