A5032254338- Surfactants and Colloidal Systems
- Advanced Cellulose Research Studies
- Photochemistry and Electron Transfer Studies
- Spectroscopy and Quantum Chemical Studies
- Ionic liquids properties and applications
- Analytical Chemistry and Chromatography
- Chemical and Physical Properties in Aqueous Solutions
- Lignin and Wood Chemistry
- Various Chemistry Research Topics
- Electrochemical Analysis and Applications
- Catalysis for Biomass Conversion
- Chemical Reaction Mechanisms
- Free Radicals and Antioxidants
- Inorganic and Organometallic Chemistry
- Chemistry and Chemical Engineering
- Chemical Synthesis and Reactions
- Thermodynamic properties of mixtures
- biodegradable polymer synthesis and properties
- Biofuel production and bioconversion
- Carbohydrate Chemistry and Synthesis
- Analytical Chemistry and Sensors
- Enzyme Catalysis and Immobilization
- Environmental Chemistry and Analysis
- Dyeing and Modifying Textile Fibers
- Chemistry Education and Research
Universidade de São Paulo
2016-2025
Hospital Universitário da Universidade de São Paulo
2017-2020
American University in Cairo
2010
Universidade Federal de São Paulo
2009
Universidade Federal do ABC
2007
Friedrich Schiller University Jena
2007
Universidade Federal de Uberlândia
2007
National University of Río Cuarto
2000-2005
Universidade Federal de São Carlos
2005
Bulgarian Academy of Sciences
2003
Ionic liquids, ILs, carrying long-chain alkyl groups are surface active, SAILs. We investigated the micellar properties of SAIL 1-hexadecyl-3-methylimidazolium chloride, C(16)MeImCl, and compared data with 1-hexadecylpyridinium C(16)PyCl, benzyl (3-hexadecanoylaminoethyl)dimethylammonium C(15)AEtBzMe(2)Cl. The include critical micelle concentration, cmc; thermodynamic parameters micellization; empirical polarity water concentrations in interfacial regions. In temperature range from 15 to 75...
Abstract Co‐solvents can minimize two of the major problems associated with use ionic liquids (ILs) as solvents for homogeneous derivatization cellulose: high viscosity and limited miscibility non‐polar reagents or reaction products. Thus, effects 18 3 binary solvent mixtures on cellulose solutions in three ILs were systematically studied respect to solution phase behavior. The applicable limits these evaluated general guidelines co‐solvents chemistry could be advanced: Appropriate should...
The use of titanium dioxide, TiO2 as a photocatalyst in water decontamination has witnessed continuous interest due to its efficiency, stability, low toxicity and cost-effectiveness. is limited by large band gap energy leading light absorbance the UV region spectrum, relatively fast rate recombination photogenerated electrons positive holes. Both limitations can be mitigated using carbon-TiO2 nanocomposites, such those based on graphene (G) oxide (GO). Relative bare TiO2, these...
Abstract Strategies to mitigate the expected “cellulose gap” include increased use of wood cellulose, fabric reuse, and recycling. Ionic liquids (ILs) are employed for cellulose physical dissolution shaping in different forms. This review focuses on regeneration dissolved as nanoparticles, membranes, nonwoven materials, fibers. The solvents these applications ILs alkali solutions without with additives. Cellulose fibers obtained via carbonate carbamate processes included. Chemical recycling...
Abstract Multifunctional polymeric eutectogel with characteristics such as self‐healing, adhesive, moldable, load bearable and penetrable through the stratum corneum layer of skin is vital for designing highly efficient platform new age sustained transdermal drug delivery. Inspired by sea cucumber, which can loosen tighten its body merge collagen fibers to regain firmness, a biomimetic multifunctional above mentioned developed here interacting natural deep eutectic solvent (NADES) poly...
A MOF based eutectogel with antibacterial and antioxidant attributes, along hemocompatibility, is used for the encapsulation sustained release of curcumin.
The impetus for the increasing interest in studying surface active ionic liquids (SAILs; with long-chain "tails") is enormous potential their applications, e.g., nanotechnology and biomedicine. progress these fields rests on understanding relationship between surfactant structure solution properties, hence applications. This need has prompted us to extend our previous study 1-(1-hexadecyl)-3-methylimidazolium chloride 1-(1-alkyl)-3-methylimidazolium chlorides, alkyl chains containing 10, 12,...
Abstract The swelling of microcrystalline, native and mercerized cotton eucalyptus celluloses by 16 aprotic solvents was investigated. number moles solvent/anhydroglucose unit, nSw, correlates well with solvent molar volume, basicity dipolarity/polarizability. Swelling is sensitive to cellulose crystallite size, surface area the presence its chains in parallel or anti‐parallel arrangements. Use solvatochromic parameters a superior alternative use other descriptors, such as Hildebrand's...
Ameliorating the existing purification methods with more affordable, efficient, and industrially adoptable that remove heavy metal ions from contaminated drinking water constitutes a persistent technological challenge. Metal–organic framework (MOF)-based materials their excellent adsorption performance are recently explored as an alternative method to traditional methods. Here, we report MOF/biopolymer composite-based aerogel is cost-effective, highly environmentally sustainable material for...
Cellulose samples from cotton linters, sisal, and sugar cane bagasse have been successively acylated (acetate, propionate, butyrate, acetate/butyrate) under homogeneous reaction conditions, in LiCl/N,N-dimethylacetamide (DMAC), by the following procedure: (i) cellulose LiCl are heated reduced pressure, at 110°C; (ii) is dissolved LiCl/DMAC heating 155°C, followed cooling to 40°C; (iii) solubilized polymer 60°C for 18 h. Attractive features of this one-pot procedure include: easy control high...