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Effect of in situ modification of bacterial cellulose with carboxymethylcellulose on its nano/microstructure and methotrexate release properties
(2018-01-01)
Bacterial cellulose/carboxymethylcelullose (BC/CMC) biocomposites with different DS-CMC (DS from 0.7 to 1.2) were developed in order to evaluate their impact as a drug delivery system. Biocomposites were loaded with ...
Modification of Clays by Sol-Gel Reaction and Their Use in the Ethylene In Situ Polymerization for Obtaining Nanocomposites
(HINDAWI PUBLISHING CORPORATION, 2012)
Synthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility
(2013-06-05)
CeO2 nanoparticles were synthesized by the precipitation method and modified with para-toluene sulfonic acid (PTSH), either in situ or post-synthesis. The presence of PTSH in the samples was confirmed by FTIR. PXRD and ...
Synthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility
(2013-06-05)
CeO2 nanoparticles were synthesized by the precipitation method and modified with para-toluene sulfonic acid (PTSH), either in situ or post-synthesis. The presence of PTSH in the samples was confirmed by FTIR. PXRD and ...
Modification of Clays by Sol-Gel Reaction and Their Use in the Ethylene In Situ Polymerization for Obtaining Nanocomposites
(HINDAWI PUBLISHING CORPORATION, 2012)
The nanocomposites formation by in situ polymerization used a metallocene catalyst (butyl-2-cyclopentadienyl zirconium 2-chlorines) and a hectorite synthetic clay type which is discussed. This research was carried out in ...
Siloxanes synthesized “in situ” by sol–gel process for fire control in wood of Araucaria angustifolia
(Elsevier, 2013-10)
Panels of Araucaria angustifolia were chemically modified with alkoxysilanes, hydrolyzed and condensed “in situ” by the sol–gel process. Alkoxysilanes selected were aminopropyl methyldiethoxysilane (A), aminopropyl ...
In situ speciation of uranium in treated acid mine drainage using the diffusion gradients in thin films technique (DGT)
(2017-02-01)
The exchange membranes P81 and DE81 and Chelex-100 resin were used to perform in situ speciation of uranium in treated acid mine drainage at the Osamu Utsumi mining site, Poços de Caldas city, Southeast Brazil. To investigate ...
Changes on iron electrode surface during hydrogen permeation in borate buffer solution
(Pergamon-Elsevier B.V. Ltd, 2008-04-01)
Hydrogen interaction with oxide films grown on iron electrodes at open circuit potential (E-oc) and in the passive region (+0.30 V-ECS) was studied by chronopotentiometry, chronoamperometry and electrochemical impedance ...
Changes on iron electrode surface during hydrogen permeation in borate buffer solution
(Pergamon-Elsevier B.V. Ltd, 2008-04-01)
Hydrogen interaction with oxide films grown on iron electrodes at open circuit potential (E-oc) and in the passive region (+0.30 V-ECS) was studied by chronopotentiometry, chronoamperometry and electrochemical impedance ...