Results 1 to 10 of about 43 (42)

Fabrication of Mesoporous Silica Shells on Solid Silica Spheres Using Anionic Surfactants and Their Potential Application in Controlling Drug Release [PDF]

Molecules, 2012
In this work, mesoporous shells were constructed on solid silica cores by employing anionic surfactante. A co-structure directing agent (CSDA) has assisted the electrostatic interaction between negatively charged silica particles and the negatively ...
Mansour Al-Hoshan, Joselito Puzon Labis, Mohamed Abbas Ibrahim, Aslam Khan, Ahmed Mohamed El-Toni   +4 more
doaj   +2 more sources

Hair surface interactions against different chemical functional groups as a function of environment and hair condition

International Journal of Cosmetic Science, Volume 45, Issue 2, Page 224-235, April 2023., 2023
Abstract Objective The nature and magnitude of molecular interactions on hair surfaces underpin the design of formulated products, of which the application involves a competitive adsorption process between cationic surfactants, fatty alcohols and surface actives such as silicone.
Leslie Labarre, Ophélie Squillace, Yu Liu, Peter J. Fryer, Preeti Kaur, Shane Whitaker, Jennifer M. Marsh, Zhenyu J. Zhang   +7 more
wiley   +1 more source

Highlighting the efficiency of ultrasound‐based emulsifier‐free emulsions to penetrate reconstructed human skin

International Journal of Cosmetic Science, Volume 44, Issue 2, Page 262-270, April 2022., 2022
Abstract Objective The cosmetic industry endeavours to strengthen the greener and safer claims of processes to respond to the high demand from customers for natural and environmentally friendly products. High‐frequency ultrasonication technology (HFUT) is a physical process enabling the stabilization of emulsions without requiring additional ...
Hichem Kichou, Yuri Dancik, Christophe Eklouh‐Molinier, Nicolas Huang, Martin Soucé, Laurianne Gressin, Guillaume Gillet, Igor Chourpa, Emilie Munnier, Franck Bonnier   +9 more
wiley   +1 more source

Roundup causes high levels of mortality following contact exposure in bumble bees

Journal of Applied Ecology, Volume 58, Issue 6, Page 1167-1176, June 2021., 2021
Surfactants, or other co‐formulants, in herbicides and other pesticides may contribute to global bee declines. We recommend that, as a precautionary measure until co‐formulant identities are made public, label guidelines for all pesticides be altered to explicitly prohibit application to plants when bees are likely to be foraging on them.
Edward A. Straw, Edward N. Carpentier, Mark J. F. Brown   +2 more
wiley   +1 more source

Batch and continuous extraction of bromelain enzyme by reversed micelles

Brazilian Archives of Biology and Technology, 2009
The main aim of this study was to optimize the conditions for bromelain extraction by reversed micelles from pineapple juice (Ananas comosus). The purification was carried out in batch extraction and a micro-column with pulsed caps for continuous ...
Ana Maria Frattini Fileti, Gilvan Anderson Fischer, José Carlos Curvelo Santana, Elias Basile Tambourgi   +3 more
doaj   +1 more source

Distribución del 1-butanol y 2-butanol en los sistemas agua/n-octano y agua/Dodecil ´Sulfato de Sodio (SDS)/n-octano usando dinámica molecular. Parte II. Uso de las herramientas gmx-density y gmx-densmap

ACI Avances en Ciencias e Ingenierías, 2019
En este trabajo, la distribución de las moléculas de 1-butanol y 2-butanol en los sistemas agua/n-octano y agua/SDS/n-octano fue determinada usando las herramientas gmx-density y gmx-densmap del programa gromacs con la finalidad de complementar a ...
José Gregorio Parra, Yosslen R Aray, Peter Iza, Geraldine Rodriguez, Elizabeth Perozo   +4 more
doaj   +1 more source

Síntesis y caracterización de espumas flexibles de poliuretano obtenidas a partir de aceite de castor maleinizado Flexible polyurethane foam synthesis and characterization obtained from maleinizated castor oil

Polímeros, 2009
En este trabajo se realiza la síntesis de espumas flexibles de poliuretano empleando un diseño experimental Taguchi, utilizando aceite de castor con y sin maleinización, se estudia la cinética de la reacción de esterificación del aceite por ...
Paula Mazo, Luis A. Rios, Diana Estenoz
doaj   +1 more source

Efeito da adição de diferentes copolímeros em blendas HDPE/HIPS pós-consumo: morfologia de fases e propriedades térmicas The effect of different block copolymers on post consumer HDPE/HIPS Blends: phase morphology and thermal properties

Polímeros, 2008
Blendas de poliolefinas/HIPS têm sido exploradas para obter filmes especiais com determinadas propriedades desejadas, tornando imperativo desenvolver vários estudos para um melhor conhecimento do comportamento desses materiais. Neste trabalho, efeitos da
Igor S. B. Perez, Sati Manrich, Silvio Manrich   +2 more
doaj   +1 more source

Neural modeling of bromelain extraction by reversed micelles

Brazilian Archives of Biology and Technology, 2010
A pulsed-cap microcolumn was used for bromelain extraction from pineapple juice by reversed micelles. The cationic micellar solution used BDBAC as the surfactant, isooctane as the solvent and hexanol as the co-solvent.
Ana Maria Frattini Fileti, Gilvan Anderson Fischer, Elias Basile Tambourgi   +2 more
doaj   +1 more source

Automated system to acquire fluorescence, polarization and anisotropy maps within liquid flows

Journal of Analytical Methods in Chemistry, Volume 24, Issue 2, Page 31-39, 2002., 2002
Maps of polarization and anisotropy can be helpful for flow analysis systems (FIA, CFA, etc.) with reactions dependent on the intermolecular alignment as well as for dispersion control. Maps can be acquired manually, but when a scan over a sample area is required, the acquisition becomes tiresome and has low precision.
Cristina M. Quintella, Cristiane C. Gonçalves, Iuri Pepe, Angelo M. V. Lima, Ana Paula S. Musse   +4 more
wiley   +1 more source