Abstract
Deep eutectic solvent (DES) was prepared from choline chloride/1,3-butanediol (CHCl/BG). DES, 1-methyl-2-pyrrolidone (NMP) and poly-vinylidene fluoride (PVDF) was cross-linked and mixed to prepare a solid polymer electrolyte (SPE). The SPE was characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The goal was to identify major functional group and element composition. Results showed that SPE contained the C-N, C-O, C-H, C-Cl, C-F, N-C=O functional groups and oxygen atom, nitrogen atom, carbon atom, chlorine atom, fluorine atom. The DES was characterized by Transmission electron microscopy (TEM). The goal was to identify microscopic morphology. Results showed that DES is dominated by amorphous. The SPE was characterized by Scanning electron microscopy (SEM). The goal was to identify pore structure. Results showed that pore structure is dominated by amorphous. The SPE was characterized by X-ray diffraction (XRD) and Differential scanning calorimetry (DSC). The goal was to analyze the crystallinity of SPE. Results showed that heat treatment temperature and time increase resulted in a significant increase in crystallinity. Cyclic voltammetric measurements (CV) showed that the SPE has relatively good stability. The results demonstrated that when the weight ratio of CHCl: BG was 1:1, the conductivity of DES is best. Studies had shown that when the weight ratio of DES: PVDF: NMP was 1:1:4, the conductivity of SPE is best. Studies had shown that it optimum treatment temperature for SPE was 90°C for 6 minutes. The SPE had been applied to NO2 gas sensor.
Highlights
As a newtype of green solvent, extractionof proteins.1 Deep eutectic solvent (DES) have been studied for their utility in carbon dioxide absorption and SO2 absorption,2 extraction of proteins,3 biocatalysis, pharmaceuticals, biodiesel purification
The deep eutectic solvent develops in this paper is a mass ratio of 1:1 of CHCl and BG
The morphology and structure of DES and solid polymer electrolyte (SPE) are analyzed by Transmission electron microscopy (TEM) and Scanning electron microscopy (SEM)
Summary
As a newtype of green solvent, extractionof proteins. DESs have been studied for their utility in carbon dioxide absorption and SO2 absorption, extraction of proteins, biocatalysis, pharmaceuticals, biodiesel purification. As a newtype of green solvent, extractionof proteins.. DESs have been studied for their utility in carbon dioxide absorption and SO2 absorption, extraction of proteins, biocatalysis, pharmaceuticals, biodiesel purification. In 2003, Andrew et al Found that choline chloride was mixed with urea4 1:2 (the ratio of substances) to obtain a new type of eutectic mixture.. In 2003, Andrew et al Found that choline chloride was mixed with urea4 1:2 (the ratio of substances) to obtain a new type of eutectic mixture.5 These eutectic mixtures had interesting solvent properties and high electrochemical conductivity.. Ionic liquid synthesis is relatively complicated, difficult to purify, and high in production cost.. DESs offer several advantages over ionic liquids, including lower cost, biodegradability, and simple preparation from readily available and inexpensive precursors. DESs9,10 have low flammability, non-toxic, non-reactive with water, and biodegradable..
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