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Carboxymethyl cellulose with tailored degree of substitution obtained from bacterial cellulose
(Elsevier, 2018-02)
Among the multiple industrial applications of carboxymethyl cellulose (CMC), those related to food and beverages industries (e.g. as thickener, stabilizer, emulsifier, binding agent), involve one fourth of the global CMC ...
The influence of pH, hydrolysis and degree of substitution on the temperature-sensitive properties of polyaspartamides
(2019-01-01)
Temperature-sensitive polyaspartamide obtained by the aminolysis reaction of polysuccinimide with isopropylamine has been proposed as a good material for biomedical applications. The polymer is susceptible to hydrolysis ...
Acetylation of bacterial cellulose catalyzed by citric acid: Use of reaction conditions for tailoring the esterification extent
(Elsevier, 2016-11)
Bacterial cellulose (BC) nanoribbons were partially acetylated by a simple direct solvent-free route catalyzed by citric acid. The assay of reaction conditions within chosen intervals (i.e. esterification time (0.5–7 h), ...
Manipulation of Mg2+-Ca2+ Switch on the Development of Bone Mimetic Hydroxyapatite
(American Chemical Society, 2017-05-20)
Ionic substitution can affect essential physicochemical properties leading to a specific biological behavior upon implantation. Therefore, it has been proposed as a tool to increase the biological efficiency of calcium ...
Local order and electronic structure of Pb1-xLaxZr0.40Ti0.60O3 materials and its relation with ferroelectric properties
(AMER INST PHYSICSMELVILLE, 2012)
The knowledge of electronic and local structures is a fundamental step towards understanding the properties of ferroelectric ceramics. X-ray absorption near-edge structure (XANES) of Pb1-xLaxZr0.40Ti0.60O3 ferroelectric ...
Manganese(ii) Schiff-base-mediated reversible deactivation controlled radical polymerization of vinyl acetate
(2021-06-14)
A series of new manganese(ii) complexes were prepared with three bidentate Schiff-base ligands derived by condensation of salicylaldehyde and different cycloalkylamines (cycloalkyl = cyclopentyl, cyclohexyl, and cycloheptyl): ...
Design, síntese e caracterização de hidrogéis e nanocompósitos de carboximetil celulose com incorporação de nanopartículas de prata e fármaco doxorrubicina para potencial aplicação na regeneração epitelial antibacteriana e antitumoral frente à linhagem celular de melanoma humano : estudos in vitro de atividade antibacteriana e antitumoral frente à linhagem celular de melanoma humano
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICAPrograma de Pós-Graduação em Engenharia Metalúrgica, Materiais e de MinasUFMG, 2018-06-29)
This study focused on the design, synthesis and comprehensive characterization of
environmentally friendly hydrogel membranes based on carboxymethyl cellulose
(CMC) for wound dressing and skin repair substitutes. These ...
Brønsted ionic liquids: study of physico-chemical properties and catalytic activity in aldol condensations
(2010)
A serie of substituted amines based ionic liquids was prepared using an aliphatic linear carboxylic acid (pentanoic acid). The ionic liquids synthesised are 2-hydroxy ethylammonium pentanoate (2-HEAPE),
2-hydroxy ...
Hydroxyapatite Nanoparticle Mesogens: Morphogenesis of pH-Sensitive Macromolecular Liquid Crystals
(American Chemical Society, 2021-03)
Numerous living structural materials display self-assembly of building blocks. Biological molecular networks exhibit lyotropic liquid crystalline properties that can support non-equilibrium pathways influenced by dynamic ...
Aprovechamiento de biomasa como aditivo para la generación de películas de base polimérica poliácido láctico (PLA) y polietileno (PE) para la conservación de frutas
(Universidad Nacional de ColombiaBogotá - Ingeniería - Maestría en Ingeniería - Materiales y ProcesosFacultad de IngenieríaBogotá - ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2022-12)
Durante décadas la industria de los empaques para frutas ha estado liderada por el uso de polietileno de alta densidad (HDPE) dada su alta resistencia mecánica, resistencia química, resistencia térmica e hidrofobicidad. ...