One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 6149-41-3, Name is Methyl 3-hydroxypropanoate, formurla is C4H8O3. In a document, author is Giteru, Stephen G., introducing its new discovery. Category: alcohols-buliding-blocks.
Understanding the relationship between rheological characteristics of pulsed electric fields treated chitosan-zein-poly(vinyl alcohol)-polyethylene glycol composite dispersions and the structure-function of their resulting thin-films
For the first time, this article elucidates how the rheological behavior of pulsed electric fields (PEF) treated chitosan-zein-poly (vinyl alcohol)-polyethylene glycol composite affects the physicochemical properties of the resulting biodegradable films. The dispersion was subjected to varying specific energy (Q(p)) (60-400 kJ/kg) or electric field strength (E-p) (0.8-3.4 kV/cm) before being developed into biodegradable films. Increasing the intensity of both Q(p) and E-p modified the dispersions’ consistency, which became dominated by high-density molecular entanglements, leading to higher viscosity, Z-average diameter, and polydispersity index. The attenuated total reflectance-Fourier transform infrared spectroscopy results confirmed that PEF-treatment promoted extended chain conformation and exposed multiple reactive sites that facilitated intermolecular entanglements and bioconjugation between the biopolymers. Exposing the dispersions to Q(p) > 160 kJ/kg (delivered at 3.4 kV/cm) or E-p of 0.8-3.4 kV/cm (Q(p) 585-633 kJ/kg) resulted in higher thermal stability as observed using TGA. Microstructural properties examined by X-ray diffraction and scanning electron microscopy showed clear interaction between the biomacromolecules at PEF intensities of Q(p) 150-400 kJ/kg and E-p 1.6-3.4 kV/cm through complex coacervation. These interactions resulted in regular, compact, and crystalline formations of the cast films. Nevertheless, films with high stability in a wet environment can be developed by subjecting the dispersions to Q(p) of similar to 60 kJ/kg and EP of 0.8 kV/cm. The findings demonstrated how the combined mechanisms of PEF-induced microstructural modification of composite colloidal dispersions and protein-polysaccharide phase separation could be used to tailor biodegradable films.
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Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts