Comparative study of two ethylcellulose forms (raw material and microspheres) carried out through thermal analysis

Dubernet, Catherine; Rouland, J. C.; Benoı̂t, Jean-Pierre

doi:10.1016/0378-5173(90)90258-6

Cited by 32 publications

(6 citation statements)

References 10 publications

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“…Figure 6 presents the thermograms of EC/VCO oleogels and the results for the main peaks, maximum crystallization temperature (T c (peak 1, high temperature), T c (peak 2, lower temperature) and T m )) and the variation of enthalpy (crystallization ∆H c and melting ∆H m ) are presented in Table S1 in Supplementary Information. The thermograms of the main used constituents in the oleogel preparation are shown in Figure S2, where the EC of medium molecular weight reveals the glass transition at 116 • C (see inset graph) and an exothermic event around 200 • C, which, according to the literature, might be associated with oxidative degradation [51,52]. The VCO shows a major melting peak at 23.41 • C; however, it is possible to observe a smaller shoulder at a lower temperature (around 15 • C) that might be attributed to the co-melting of triacylglycerol (TAG) molecules with different melting temperatures [53].…”

Section: Thermal Analysismentioning

confidence: 79%

Tailoring Natural-Based Oleogels Combining Ethylcellulose and Virgin Coconut Oil

et al. 2022

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Oleogels are becoming an attractive research field, since they have recently been shown to be feasible for the food and pharmaceutical sectors and provided some insights into the biomedical area. In this work, edible oleogels were tailored through the combination of ethylcellulose (EC), a gelling agent, with virgin coconut oil (VCO), vegetable oil derived from coconut. The influence of the different EC and VCO ratios on the structural, physical, and thermal properties of the oleogels was studied. All EC/VCO-based oleogels presented a stable network with a viscoelastic nature, adequate structural stability, modulable stiffness, high oil-binding capability, antioxidant activity, and good thermal stability, evidencing the EC and VCO’s good compatibility.

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Section: Thermal Analysismentioning

confidence: 79%

Tailoring Natural-Based Oleogels Combining Ethylcellulose and Virgin Coconut Oil

et al. 2022

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“…3, profile B). Dubernet and co‐workers11,12 also reported a slight decrease in T g of EC microspheres compared with EC powder and concluded that this phenomenon only provided information about polymer aging. The addition of IBP, a highly crystalline drug with a melting endotherm of about 76°C resulted in an amorphous transparent polymer film, indicating that film casting yielded a molecular dispersion or solid solution.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Ibuprofen as a Nontraditional Plasticizer of Ethyl Cellulose

Brabander

Mooter

Vervaet

et al. 2002

Journal of Pharmaceutical Sciences

109

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“…EC is a commercially available and biodegradable polymer, which is chemically inert and non-toxic. 51 oMWCNTs are also chemically inert and have good thermal stability. They have a high specic surface area and a large amount of carboxylic and hydroxyl groups.…”

Section: Introductionmentioning

confidence: 99%

Ethyl cellulose and functionalized carbon nanotubes as a co-gelator for high-performance quasi-solid state dye-sensitized solar cells

Neo

Ouyang

2013

J. Mater. Chem. A

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Long term device stability and high power conversion efficiency (PCE) are important for practical application of dye-sensitized solar cells (DSCs). Here, we report the use of ethyl cellulose (EC) and acid functionalized multi-walled carbon nanotubes (oMWCNTs) as a co-gelator to gel organic solvents and the application of these gels for quasi-solid state DSCs. The gels are formed by blending EC and oMWCNTs with methoxypropionitrile (MPN) and acetonitrile (ACN). The loadings of EC and oMWCNTs can be as low as 4 wt% and 1.5 wt%, respectively, for the gel formation. The total minimum gelator loading of EC and oMWCNTs is lower than that with EC alone. In the absence of oMWCNTs, the EC loading must be more than 12 wt% for the gel formation. Gel electrolytes were prepared by adding iodine, 1-methyl-3-propylimidazolium iodide (PMII), guanidinium thiocyanate and 4-tert-butyl pyridine into the EC-oMWCNT/ACN-MPN gels, and they were used to fabricate quasi-solid state DSCs. The optimal PCE of the gel DSCs was 6.97% under AM1.5G illumination, quite close to that of control liquid DSCs, while the gel DSCs have better long term stability than their liquid-state counterparts. The former retains more than 98% of the initial PCE after 30 days, whereas the PCE of the latter decreases to about

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Comparative study of two ethylcellulose forms (raw material and microspheres) carried out through thermal analysis

Cited by 32 publications

References 10 publications

Tailoring Natural-Based Oleogels Combining Ethylcellulose and Virgin Coconut Oil

Tailoring Natural-Based Oleogels Combining Ethylcellulose and Virgin Coconut Oil

Characterization of Ibuprofen as a Nontraditional Plasticizer of Ethyl Cellulose

Ethyl cellulose and functionalized carbon nanotubes as a co-gelator for high-performance quasi-solid state dye-sensitized solar cells

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