Mesostructured Polymer Materials Based on Bicontinuous Microemulsions

Kunitake, Masashi; Sakata, Kouhei; Nishimi, Taisei

doi:10.5772/38642

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Polymeric emulsion systems have many industrial applications including adhesives, paints, paper coatings, and textile coatings. BMEs have been utilized as a soft template for both electrochemical applications − and the production of polymeric materials. − Several research groups (including our own) have reported that polymerization or gelation in a BME can produce various unique structures, such as continuous porous monolithic, bicontinuous hybrid, and nanoribbon structures . The gelation of BME has been proposed as a methodology for the production of a unique new class of soft “wet” gels.…”

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Stand-Alone Semi-Solid-State Electrochemical Systems Based on Bicontinuous Microemulsion Gel Films

et al. 2020

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Bicontinuous microemulsion (BME)-based hydrogel films were integrated with screen-printed electrodes (SPEs) comprising working, counter, and reference electrodes to form stand-alone, semi-solid-state electrochemical systems that do not require an outer electrolyte solution. The gel network of the BME hydrogel only exists in the microaqueous phase and retains the structure of the entire BME gel. Following gelation, a microaqueous phase with sufficient ionic strength ensured effective ionic conductivity, even in thin gel films. This enabled the electrochemical reaction to proceed using a thin gel film as an electrolyte solution. However, an intact micro-oil phase with no gel network enabled efficient extraction from an external oil solution and exhibited rapid electrochemistry that was comparable to that of a BME solution. Cyclic voltammograms of lipophilic redox species in oil using the gel-integrated SPE system demonstrated successfully in the oil itself and in the air with dropped oil onto the system.

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Stand-Alone Semi-Solid-State Electrochemical Systems Based on Bicontinuous Microemulsion Gel Films

et al. 2020

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“…Gart and his co-workers [8] and other workers have shown conclusively, using data obtained from many physico-chemical techniques, that Bμem spans the range of 25 to 65 % by weight of water. Like the microemulsion system, the phase diagram and structure of Bμem have been given in literature [9][10][11][12][13][14]. However, we show in Fig.…”

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Enhancement of Curcumin Fluorescence by Ascorbic Acid in Bicontinuous Microemulsion

Iwunze

2015

J Fluoresc

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Steady-state fluorescence spectro-photometric technique is used in this work to determine the chemical parameters of the complex formed between curcumin and ascorbic acid in bicontinuous microemuslion (Bμen). The Bμen liquid used is made up of a four-components system (water-oil-surfactant and co-surfactant (1-pentanol)) in the ratio of 42.11:13.7:21.34:22.85 % w/w. The oil and surfactant used are tetradecane and cetyltrimethylammonium bromide. Curcumin is known to have low solubility in water, but liberally soluble in Bμen, hence the use of Bμen in this study. The observed fluorescence intensity of curcumin was enhanced by introduction of ascorbic acid to the curcumin solution. The increase in the fluorescence intensity showed a very good linearity with a regression coefficient of 0.9974. The association constant, Ka, that resulted between curcumin and ascorbic acid was calculated as 2.15 × 10(4) with the free energy of association, ∆Ga, of -24.71 kJ/mol. The ratio of the complex that was formed by these two molecules was determined as 1:1.

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