Intercalation of anionic organic ultraviolet absorbers in bimetallic and trimetallic layered double hydroxides for low-density polyethylene protection

Autor: Neffer Arvey Gomez Gomez, Fernando Wypych, Gabriel Machado Silva

Publikováno v: Polymer Bulletin. 79:3523-3540

Bimetallic (Zn/Al) and trimetallic (Mg,Zn/Al) layered double hydroxides (LDHs) intercalated with nitrate were synthesized by the coprecipitation method and used as precursors to obtain LDHs intercalated with the organic anions 4–4′-diamino-2,2′

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0873e1b7b2dffee265386dec36761409
https://doi.org/10.1007/s00289-021-03640-x

Composites of polyethylene and layered cobalt hydroxide salts as potential ultraviolet radiation absorbers

Autor: Fernando Wypych, Neffer Arvey Gomez Gomez, Swami Arêa Maruyama, Andreas Leuteritz

Publikováno v: Polymer Bulletin. 77:255-273

This paper describes the synthesis of cobalt hydroxide nitrate (CoHN) and cobalt hydroxide p-aminobenzoate (CoHAB), which were dispersed in polyethylene with the objective of protecting the polymer from ultraviolet (UV) radiation degradation. First,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90c8cd27f5cd91e1678c5c3bb21299da
https://doi.org/10.1007/s00289-019-02742-x

Layered Double Hydroxides with the Composition Mn/Al-SO4-A (A = Li, Na, K; Mn:Al ca. 1:1) as Cation Exchangers

Autor: Fernando Wypych, Suelen Cristina Alves da Silva, Neffer Arvey Gomez Gomez, Anne Raquel Sotiles

Publikováno v: Journal of the Brazilian Chemical Society v.30 n.9 2019
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 30, Issue: 9, Pages: 1807-1813, Published: 16 SEP 2019

Hydrated Mn/Al-SO4-A (A = Li, Na or K) layered double hydroxides with M2+:M3+ molar ratio close to 1:1 were synthesized by co-precipitation with increasing pH. All phases presented solvated alkali metals and sulfate as intercalated species. In the ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::877224ef2f87b5509309a5acb7108b73
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000901807

Layered double hydroxides with the composition [Mn6Al3(OH)18][(HPO42−)2A+].yH2O (A+ = Li, Na or K) obtained by topotactic exchange reactions

Autor: Anne Raquel Sotiles, Neffer Arvey Gomez Gomez, Fernando Wypych

Publikováno v: Applied Clay Science. 193:105658

Layered double hydroxides (LDH) with the chemical composition [Mn6Al3(OH)18][(HPO42−)2A+].yH2O (A+ = Li, Na or K) were synthesized for the first time and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Indu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::502cddb5bc31a3497311b0a82b0ea888
https://doi.org/10.1016/j.clay.2020.105658

Accelerated aging of so2 switchgear seals

Autor: Paulo O. Fernandes, Vanderlei Ricardo Cruz, Helena M. Wilhelm, Leandro G. Feitosa, Fernando Wypych, Neffer Arvey Gomez Gomez, Mauricio Mattoso, Luiz Henrique Meyer

Publikováno v: IEEE Electrical Insulation Magazine. 32:21-27

Partial discharges in SF6-insulated electrical equipment generate gaseous and solid by-products. The gaseous by-products remain in the SF6 during operation, reducing its insulation and heat conduction capacities, and causing deterioration of solid ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75df5cb4d08f9f7afea8f06a48a1e8ca
https://doi.org/10.1109/mei.2016.7361100