Results 51 to 60 of about 18,682 (226)

Activation of Metal Complexes With Ultrasound Waves for Targeted Anticancer Therapy

Angewandte Chemie International Edition, EarlyView.
Ultrasound enables non‐invasive activation of metal‐based therapeutics deep within tumors. Acoustic cavitation can drive sonodynamic reactive oxygen species generation or mechanochemical metal–ligand bond dissociation, enabling controlled release of bioactive payloads.
Félix Grosjean, Nicolás Montesdeoca, Gilles Berger, Johannes Karges   +3 more
wiley   +1 more source

Alkali‐Catalyzed Synthesis of Acylglycerol Estolides Exclusively from Castor Oil

Journal of the American Oil Chemists' Society, EarlyView.
This work advances sustainable chemistry by converting renewable castor oil into high‐performance estolides via solvent‐free, low‐energy catalysis. ABSTRACT Estolides are oligomers composed of fatty acid (FA) monomers linked through secondary ester bonds located along the mid‐chain region.
Lucas Natã de Melo, Simoni Margareti Plentz Meneghetti, Mario Roberto Meneghetti, Janaína Heberle Bortoluzzi   +3 more
wiley   +1 more source

Comparison of three methods for rendering plant fat transesterification

Research in Agricultural Engineering, 2013
Three most frequently used methods for fat transesterification were compared using rendering plant fat (RPF) as model. Acid-catalysed transesterification was found to be the most effective (conversion 90%) at optimum conditions (fat: methanol ratio 1:10,
A. Prošková, J. Kučera, Z. Kopicová, L. Škarková   +3 more
doaj   +1 more source

Annatto‐Derived Carotenoids (Bixin and Norbixin) As Biodiesel Antioxidants: Characterization and Effects on Oxidative Stability (Rancimat and PetroOXY)

Journal of the American Oil Chemists' Society, EarlyView.
Annatto‐derived bixin and norbixin were characterized and evaluated as natural antioxidants for soybean biodiesel. Their antioxidant performance and effects on oxidative stability were assessed using DPPH, Rancimat, and PetroOXY methods. ABSTRACT The increasing use of eco‐friendly fuels is increasing the production of biodiesel but soybean biodiesel is
Marco Aurélio da Silva Coutinho, Edmilson Miranda de Moura, Carla Verônica Rodarte de Moura, Leanne Silva de Sousa, Vicente Galber Freitas Viana   +4 more
wiley   +1 more source

Influence of n-Hexane on in Situ Transesterification of Marine Macroalgae

Energies, 2012
The purpose of this work is to investigate the influence of n-hexane addition on in situ transesterification of a solid raw material for biodiesel production.
Angel Sánchez, Rocio Maceiras, Angeles Cancela, Mónica Rodríguez   +3 more
doaj   +1 more source

Development and Validation of a Cellulose‐Coated Stir Bar Sorptive Extraction Method for a Simple, Environmentally Friendly Approach to Measuring Free Glycerol in Biodiesel

Journal of the American Oil Chemists' Society, EarlyView.
Preparation of a highly porous cellulose‐coated stir bar for the selective, environmentally friendly extraction of free glycerol from biodiesel using the SBSE method, followed by HPLC‐DAD analysis of the extract after derivatization with benzoyl chloride.
Caroline Lopes da Silva, Maria Aparecida Barros, Antônio Carlos Ferreira Batista, Anizio Marcio de Faria   +3 more
wiley   +1 more source

Cyclic Processability of Functional Liquid Crystalline Epoxy Networks via Dynamic Ester Bonding

Journal of Applied Polymer Science, EarlyView.
This work reports the successful reprocessing of liquid crystal epoxy networks through two distinct modes—welding of clean breaks and reconstitution from shredded material—without significant loss of functionality. Thermal and mechanical characterization shows stability in the shape memory behavior and glass transition temperature over multiple ...
Collin Pekol, Mohammad Husein, David J. Keffer, David P. Harper   +3 more
wiley   +1 more source

Characterization of Biodiesel Produced from the Transesterification of RPO (Refined Palm Oil) and Recycled Methanol Using an NaOH Catalyst

Berkala Sainstek
The transesterification reaction used in biodiesel production is reversible; thus, several approaches are required to achieve a high product yield.
Elvianto Dwi Daryono, Jimmy
doaj   +1 more source

Diol Chain‐Length Effects in Adipate and Succinate Polyesters for Thermoplastic Polyurethanes

Journal of Applied Polymer Science, EarlyView.
This study examines 20 aliphatic polyesters as soft segments for thermoplastic polyurethanes (TPU), synthesized from adipic or succinic acid and diols (C2, C3, C4, C5, and C6). A pronounced odd‐even effect shows that even diols crystallize, while odd diols remain amorphous.
Dario Brand, Stephanie Duettmann, Kevin Marschner, Apolline Limouzin, Brigitte Voit   +4 more
wiley   +1 more source

Procédé de production d’ester d’acide ricinoléique par transestérification enzymatique sélective

, 2010
Axe 4 Biotechnologie microbienne et enzymatique des lipides et des agropolymères. Contact: erdubio@supagro.inra.frThe present invention relates to a method for preparing ricinoleic acid ester from a pure or mixed vegetable oil, in particular castor oil ...
Villeneuve, Pierre, P., Lecomte, Jérôme,, Arkema France, ., Villeneuve, Pierre,, Dubreucq, Eric, Dubois, Jean-Luc, Bourlieu, Claire, Lecomte, Jérôme   +7 more
core   +1 more source