Dissolution of thin SiO2-coatings – Characterization and evaluation

Klause, M.; Rothhaar, U.; Bicker, M.; Ohling, W.

doi:10.1016/j.jnoncrysol.2009.11.003

Cited by 9 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The inferior dissolution of the coatings cured at higher temperature can be accounted to a higher film density and degree of polymerization, which may induce a more advanced chemical stability of the coatings. These results are in agreement with reported data [56,57], where SiO x films with poor polymerization and high defect density showed higher dissolution rates in neutral aqueous solutions. Further, the considerable amount of easily hydrolyzed residual Si-H moieties indicated by the FT-IR analysis in the low temperature cures may contribute to the coating instability [58].…”

Section: Neutral Salt Spray Testingsupporting

confidence: 94%

Corrosion resistance of AISI 316L coated with an air-cured hydrogen silsesquioxane based spin-on-glass enamel in chloride environment

Lampert

Christiansen²,

Din

et al. 2017

Corrosion Science

View full text Add to dashboard Cite

The efficiency of thin hydrogen silsesquioxane (HSQ)-based corrosion barrier coatings on 316L substrates after oxidative thermal curing at 400-550 ºC in air was investigated. Infrared spectroscopy and electrochemical impedance spectroscopy showed that an increasing curing temperature leads to progressing coating densification, accompanied by decreasing barrier properties. Cyclic polarization measurements indicated that defects due to substrate oxidation are detrimental for the substrate passivity. Insufficiently polymerized coatings showed poor chemical stability in neutral salt spray testing and the chemical coating stability increased with curing temperature. Oxidative curing was found inadequate as polymerization treatment of HSQbased corrosion barrier coatings on 316L substrate.

show abstract

Section: Neutral Salt Spray Testingsupporting

confidence: 94%

Corrosion resistance of AISI 316L coated with an air-cured hydrogen silsesquioxane based spin-on-glass enamel in chloride environment

Lampert

Christiansen²,

Din

et al. 2017

Corrosion Science

View full text Add to dashboard Cite

show abstract

“…The hydrolysis of silica proceeds from the surface and is catalyzed by OH − ; hence, its rate increases rapidly with increasing pH and in particles with high surface area (18,19,22). To quantify the extent of dissolution of the mesoporous silica nanoparticles, the supernatant collected after incubation was subjected to the silicomolybdic acid spectrophotometric assay to measure the amount of soluble silicic acid (17).…”

Section: Resultsmentioning

confidence: 99%

Enhanced Gene and siRNA Delivery by Polycation-Modified Mesoporous Silica Nanoparticles Loaded with Chloroquine

et al. 2010

View full text Add to dashboard Cite

Purpose To prepare mesoporous silica-based delivery systems capable of simultaneous delivery of drugs and nucleic acids. Methods The surface of mesoporous silica nanoparticles (MSN) was modified with poly(ethylene glycol) (PEG) and poly(2-(dimethylamino)ethylmethacrylate) (PDMAEMA) or poly (2-(diethylamino)ethylmethacrylate) (PDEAEMA). The particles were then loaded with a lysosomotropic agent chloroquine (CQ) and complexed with plasmid DNA or siRNA. The ability of the synthesized particles to deliver combinations of CQ and nucleic acids was evaluated using luciferase plasmid DNA and siRNA targeting luciferase and GAPDH. Results The results show a slow partial MSN dissolution to form hollow silica nanoparticles in aqueous solution. The biological studies show that polycation-modified MSN are able to simultaneously deliver CQ with DNA and siRNA. The co-delivery of CQ and the nucleic acids leads to a significantly increased transfection and silencing activity of the complexes compared with MSN not loaded with CQ. Conclusion PEGylated MSN modified with polycations are promising delivery vectors for combination drug/nucleic acid therapies.

show abstract

“…Films of intermediate thickness between 250 and 550 nm perform best, with hydrolytic resistance values close to 0.1 mL. This behavior can be explained by considering that the hydrolytic resistance of a film depends on its microstructure [7,[22][23][24][25][26], and its thickness [22,27]:…”

Section: Methodsmentioning

confidence: 99%

Barrier properties and hydrothermal aging of amorphous alumina coatings applied on pharmaceutical vials

Etchepare

Samélor

Vergnes

et al. 2021

Surface and Coatings Technology

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Dissolution of thin SiO2-coatings – Characterization and evaluation

Cited by 9 publications

References 21 publications

Corrosion resistance of AISI 316L coated with an air-cured hydrogen silsesquioxane based spin-on-glass enamel in chloride environment

Corrosion resistance of AISI 316L coated with an air-cured hydrogen silsesquioxane based spin-on-glass enamel in chloride environment

Enhanced Gene and siRNA Delivery by Polycation-Modified Mesoporous Silica Nanoparticles Loaded with Chloroquine

Barrier properties and hydrothermal aging of amorphous alumina coatings applied on pharmaceutical vials

Contact Info

Product

Resources

About