نتایج جستجو برای: thermoreversible gels aerogels

تعداد نتایج: 24213  

Journal: :Langmuir : the ACS journal of surfaces and colloids 2013
Phillip Lee Michael A Rogers

12-Hydroxystearic acid (12-HSA) xerogels derived from 12-HSA-acetronitrile organogels are highly effective sorbent materials capable of adsorbing apolar, spilled materials in aqueous environments. 12-HSA xerogels made from 12-HSA-acetronitrile organogels are more effective than 12-HSA xerogels made from 12-HSA-pentane organogels because of the highly branched fibrillar networks established in a...

2010
Anja Veronovski Zoran Novak Željko Knez

A number of polymers used in the production of carriers for drug delivery applications, possessing high surface area, appropriate surface chemistry and porosity, chemical stability and low cost have been investigated. One of these promising candidates are natural polysaccharides such as alginic acid sodium salt, guar gum, xanthan gum and chitosan due to their outstanding merits. They are simila...

Journal: :Food structure 2021

• Aerogels are nanostructured materials with low bulk density and open porosity. Food-grade aerogels prepared from several bio-based materials. can be loaded to obtain delivery systems for food packaging applications. turn into oleogels by oil absorption within the pores. density, high surface area (>150 m 2 /g) porosity (typically 95–99.99 %). They obtained solvent removal gels while preservin...

Journal: :Colloids and Surfaces B: Biointerfaces 2021

Perfluorocarbon (PFC) nanoemulsions have great potential in biomedical applications due to their unique chemical stability, biocompatibility, and possibilities for enhanced oxygen supply. The addition of amphiphilic block copolymers promotes the formation long-term stability emulsion-based gels. In this work, we report systematic study impact adding triblock water-in-perfluorocarbon on structur...

Journal: :Applied sciences 2022

Agarose-based gels were produced either by freeze-drying or supercritical drying for crystal violet (CV) removal from aqueous solutions. The microporosity features of these structures highly affected the final adsorption properties. In particular, agarose cryogels characterized a macroporous and irregular morphology, with low value specific surface area (11 ± 6 m2/g) respect to nanoporous aerog...

2009
Søren Hvidt Kristian Keiding

Aqueous solutions of a Pluronic copolymer P104 have been investigated by rheological techniques in order to characterize its gelation and its gel properties. P104 solutions have a low viscosity at low temperatures but form an elastic gel at physiological temperatures. Elastic moduli are of the order 10 kPa with a significant yield stress. Possible use of P104 to prevent flow in pipes or blood v...

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