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Titania-based organic-inorganic hybrid planar waveguides
(Elsevier B.V., 2002-10-07)
Eu3+ -doped titania-silica planar waveguides were prepared from tetraethylorthotitanate (TEOT) and modified silane 3-amino-propyltriethoxysilane (APTS). Films were deposited on borosilicate glass substrates by a dip-coating ...
SÍNTESIS Y CARACTERIZACIÓN DE MATERIALES HÍBRIDOS A BASE DE POLIURETANO PARA SU POTENCIAL APLICACIÓN COMO SUSTITUTO DE TEJIDO ÓSEO
(2011-11-17)
This work focuses on the study of organic-inorganic hybrid materials based on siloxane
and polyurethane modified with calcium nitrate (Ca(NO3)2 4H2O) and triethyl phosphate
(C2H5O)3PO) synthesized by the sol-gel method.
The ...
Amino Acid-Functionalized Polyelectrolyte Films as Bioactive Surfaces for Cell Adhesion
(2019)
Surfaces were prepared with polyelectrolyte derivatives of poly(styrene-alt-maleic anhydride) (PSMA) functionalized with amino acids of different hydropathy indices, with the aim of evaluating the effect of the chemical ...
Estudo da labilidade de Cu(II), Cd(II), Mn(II) e Ni(II) em substâncias húmicas aquáticas utilizando-se membranas celulósicas organomodificadas
(Sociedade Brasileira de Química, 2007-02-01)
In this work commercial filters papers were organomodified with tetraethylorthosilicate (TEOS) and 3-aminopropyltriethoxysilane (3-APTS), aiming at the development of a new analytical procedure for in-situ speciation of ...
The influence of silane surface modification on microcrystalline cellulose characteristics
(2020-02-15)
Microcrystalline cellulose (MCC) can be a reinforcement in composites, especially after surface modification. In this paper, MCC was modified using 3-aminopropyltriethoxysilane (APTES) in the following ratios (MCC/APTES): ...
Luminescent Eu(iii) hybrid materials for sensor applications
(Royal Society of Chemistry, 2008-09)
In this work we use the sol–gel technique to develop different luminescent Eu(III) porous materials from a bis(trialkoxysilyl) organic precursor synthesized from the amide of the DPA (2,6-pyridinedicarboxylic acid) with ...
Synthesis of 1,4-dihydropyrimidines with immobilized urease: Effect of method immobilization on magnetic supports
(De Gruyter, 2017-08)
The effect of the urease immobilization method was studied on magnetic supports for the Biginelli/Hantzsch reaction. For this purpose, Fe3O4/SiO2 was modified with 3-Aminopropyl-Triethoxysilane and then activated with ...
Epoxy networks modified by multifunctional polyhedral oligomeric silsesquioxanes (POSS) containing amine groups
(Springer, 2008-07)
The hydrolytic condensation of a precursor synthesized by the reaction of equimolar amounts of (3-aminopropyl)triethoxysilane and phenylglycidylether led to a distribution of polyhedral oligomeric silsesquioxanes (POSS) ...
Improving the catalytic activity of formate dehydrogenase from Candida boidinii by using magnetic nanoparticles
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
Formate dehydrogenase from Candida boidinii (FDH) was immobilized on three different magnetic supports: one composed by magnetite nanoparticles directly silanized with ARTS (aminopropyltriethoxysilane), i.e. MagNP-APTS: ...
Cellulose modified fibres in cement based composites
(ELSEVIER SCI LTD, 2009)
The objective of the present work is to evaluate the effect of surface modification of cellulose pulp fibres on the mechanical and microstructure of fibre-cement composites. Surface modification of the cellulose pulps was ...