Read Online Gelled Bicontinuous Microemulsions: A New Type of Orthogonal Self-Assembled Systems - Michaela Laupheimer | PDF
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Jul 3, 2000 block copolymer lead to a dramatic increase in the volumes of oil and water, which can be solubilized in a bicontinuous microemulsion.
Apr 22, 2018 the capillary condensation in bicontinuous microemulsions takes place when two parallel the gel phase transition is observed in the spec-.
Is the first report on the rheological properties of oil-gelled polymerizable bicontinuous microemulsions. The polymerizable base system consists of h2o/nipam/bisam - n-dodecane-c13/15e5 (a technical grade n-alkyl polyglycol ether), where nipam denotes the monomer n-isopropylacrylamide and bisam the cross-linker n, n'-methylene bisacrylamide.
With respect to the gelled bicontinuous microemulsions one can say that the gels are the stronger the larger the distance between the 1-phase region and the sol-gel transition boundary. Note that the thermal behavior may be important for the control of the polymerization process.
We have identified gelled bicontinuous microemulsions as orthogonal two base systems, namely a non-gelled bicontinuous microemulsion and a binary gel.
Thus in case of gelled bicontinuous microemulsions one expects bicontinuous microemulsion domains to coexist with a three-dimensional gelator network. In order to prove this assumption for the system h 2 o– n -decane/12-hoa–c 10 e 4 the microstructure was investigated with different methods.
Gelled non-toxic bicontinuous microemulsions have a great potential for transdermal drug delivery as the microemulsion facilitates the solubilization of both hydrophilic and hydrophobic drugs, while the gel network provides mechanical stability and thus an easy application on the skin.
We have, in addition, studied the “ringing” gel phases of ent topologies in microemulsion structure is whether dom bicontinuous phases with little or no long-.
Hence, gelled bicontinuous microemulsions have been identified as a new type of orthogonal self-assembled system. Über den autor und weitere mitwirkende michaela laupheimer studied chemistry at the university of stuttgart, germany, with a focus on technical and physical chemistry.
Gelled non-toxic bicontinuous microemulsions as promising transdermal drug carriers.
Microemulsions and gels are well-known systems, which play a major role in colloidal and interfacial science.
Bicontinuous microemulsions, formed by mixing appropriate amounts of oil, water and a surfactant scriven 1976 form an intriguing class of complex fluids.
To begin with, the bicontinuity of the micro- emulsion domains in the middle of the one-phase region was verified.
Laupheimer studied the system h 2 o– n-decane/12-hoa–c 10 e 4 and proved that the gelled bicontinuous microemulsion is an orthogonal self-assembled system in which the formation of the nanostructured microemulsion is nearly independent on the formation of the gel network [18,19,20].
Nanosystems such as microemulsions (me) and nanoemulsions (ne) offer considerable opportunities for targeted drug delivery to and via the skin. Me and ne are stable colloidal systems composed of oil and water, stabilised by a mixture of surfactants and cosurfactants, that have received particular interest as topical skin delivery systems.
By comparing gelled bicontinuous microemulsions with corresponding non-gelled microemulsions and binary gels, it is demonstrated that bicontinuous microemulsion domains coexist with a gelator network and that the coexisting structures possess no fundamental mutual influence.
Transdermal delivery systems have been intensively studied over the past 2 decades, with the focus on overcoming the skin barrier for more effective application of pharmaceutical and cosmetic products. Although the cosmeceutical industry has made a substantial progress in the development and incorporation of new and effective actives in their products, the barrier function of the skin remains.
Jan 5, 2021 the structure of bicontinuous microemulsions can be analyzed either by high- resolution electron microscopy on a freeze fractured microemulsion.
Bicontinuous microemulsions gelled with a low molecular weight gelator have been shown to be an orthogonally self-assembled system.
This is the first report on the rheological properties of oil-gelled polymerizable bicontinuous microemulsions. The polymerizable base system consists of h2o / nipam / bisam – n-dodecane – c13/15e5 (a technical grade n-alkyl polyglycol ether), where nipam denotes the monomer n-isopropylacrylamide and bisam the cross-linker n,n′-methylene.
Gelled microemulsions are highly promising for microemulsion applications in which low viscosity is undesirable, such as administering a drug-delivering microemulsion to a certain area of the skin. It is essential to understand the properties of and structures formed in a system combining microemulsion components and a gelator.
Microemulsions have emerged as a promising dosage form for ocular use [176]. Disclosed sustained release emulsions (macroemulsions and microemulsions) in which particles of the dispersed phase were dispersed and stably maintained in physical separation by lightly crosslinked, water swellable polymers (carboxyvinyl polymers.
Feb 18, 2021 gelled non-toxic bicontinuous microemulsions have great potentials in transdermal drug delivery.
These high-quality precast gels are designed for polyacrylamide gel electrophoresis in the mini-protean tetra cell.
Hence, gelled bicontinuous microemulsions have been identified as a new type of orthogonal self-assembled system. About the author michaela laupheimer studied chemistry at the university of stuttgart, germany, with a focus on technical and physical chemistry.
Gelled non-toxic bicontinuous microemulsions have great potentials in transdermal drug delivery. The bicontinuous microemulsion provides optimum drug solubilisation and promotes skin permeation, while the gel network provides mechanical stability and an easy application.
Gelled bicontinuous microemulsions: a new type of orthogonal self-assembled systems (springer theses) - kindle edition by laupheimer, michaela. Download it once and read it on your kindle device, pc, phones or tablets.
Gelled bicontinuous microemulsions - a novel type of orthogonal self-assembled systems abstract: cosima stubenrauch: 17:30 h: microgels at interfaces: pickering or not? abstract: walter richtering 18:00 h: closing remarks: martin schoen.
Abstract bicontinuous microemulsions gelled with a low molecular weight gelator have been shown to be an orthogonally self-assembled system. With the mechanical stability provided by the gel network, gelled non-toxic bicontinuous microemulsions have the potential to be an efficient transdermal drug delivery carrier.
Studying orthogonal self-assembled systems: microstructure of gelled bicontinuous microemulsions. Soft matter, 10(43):8744-8757, 01 nov 2014 cited by: 3 articles pmid: 25271704.
Gelled and foamed microemulsion-based systems for cutaneous drug delivery of diclofenac sodium by braa hajjar a thesis submitted in partial fulfillment of the requirements for the degree of master of science in pharmaceutical sciences faculty of pharmacy and pharmaceutical sciences university of alberta @ braa hajjar, 2017.
Sweden stands up for open access – cancels agreement with elsevier lubcat libris.
Keywords: antimicrobial peptides, bicontinuous microemulsions, dynamics, collective motions, elasticity, bending modulus, neutron spin echo, small-angle.
A bicontinuous microemulsion (bme, winsor iii), also called a middle-phase then, three composite gel systems, namely a bme organogel, a bme hydrogel,.
This is the first report on the rheological properties of oil-gelled polymerizable bicontinuous microemulsions. The polymerizable base system consists of h2o / nipam / bisam – n-dodecane – c13/15e5 (a technical grade n-alkyl polyglycol ether), where nipam denotes the monomer n-isopropylacrylamide and bisam the cross-linker n,n′-methylene bisacrylamide.
Gelled bicontinuous microemulsions: a new type of orthogonal self-assembled systems (springer theses) michaela laupheimer isbn: 9783319077185 kostenloser versand für alle bücher mit versand und verkauf duch amazon.
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