Spectroscopic studies on the binary solutions of ethanol with 1,4-dioxane

A New Two‐Step Strategy for Encapsulating Amorphous Polymer Chains in Thiourea Crystals

“…However, instead of simple residual solvent, they are believed to be generated from dioxane-polymer and dioxane-TU interactions, since these peaks show varying shifts or band shape changes from neat dioxane ( Table 1). [31][32][33][34] Similar to many other PMMA complex studies, [35][36][37][38] no significant shift is observed in the PMTD complex for the band of the PMMA acrylate carboxyl group located at 1727 cm −1 . However, the symmetric stretching vibrations of methylene groups at 2849 cm −1 in the spectrum of PS [39] shift to a larger wavenumber at 2859 cm −1 in the PSTD sample.…”

“…However, instead of simple residual solvent, they are believed to be generated from dioxane–polymer and dioxane–TU interactions, since these peaks show varying shifts or band shape changes from neat dioxane ( Table 1 ). [ 31–34 ]…”

“…Both peaks are 20-30 °C higher than the T g of the asr-polymers. Since no polymer T g s were found in the ) 2919 [31] 2970 2970 CH 2 scissoring 1452 [31] 1454 1452 ν(COC) 1128 [31] 1111 1113 874 [33] 862 862…”

Effect of simultaneous use of microwave and ultrasound irradiation on the sulfuric acid hydrolysis lignin (SAHL) depolymerization

“…Conversely, 1,4-dioxane showed the highest power of SAHL solubility. Wu et al 38 and other reports in the literature 39,40 also found that 1,4-dioxane has a high dissolving power for lignin, due to its high basicity and very low dipole moment. Although 1,4-dioxane had higher lignin solubility, methanol and ethanol gave higher bio-oil yields of (43.01 and 38.61) wt%, respectively, owing to their hydrogen-donating abilities (Table 2, entries 3, 5 and 7).…”

Hydrogen Bonding in 1‐Propanol‐Ethanol Binary Mixture: Experimental and Modeling Approaches

“…[25] Dielectric spectroscopy studies, including refractive indices, show hetero-interactions between the constituents. [26][27][28] In the previously studied ethanol-methanol binary system, through refractive surface tension and dielectric measurements, anomalous behaviour was observed in mixtures with lower concentration of methanol. This was attributed to the breaking and restructuring of the hydrogen bond network among the ethanol molecules, on addition of small amounts of methanol.…”