Thermal characterization by DSC and TGA analyses of PVA
Apr 20, 2019 · Polyvinyl alcohol (PVA) hydrogels were prepared by a cyclic freezing–thawing technique without any cross-linker agent, using PVA and Maghnite water dispersion with different ratios. The obtained results have shown a higher thermal stability of samples with sodium than with alkylammonium Maghnite.
Thermogravimetric analysis (TGA) curves of pure PVA and crosslinked PVA ...
Two crosslinking processes for polyvinyl alcohol (PVA) with sulfosuccinic acid (SSA) and thermal crosslinking were used to obtain a proton exchange membrane (PEM). Such PEMs are used in...
Thermal Behavior of Poly(vinyl alcohol) in the Form of Physically ...
In this study, the differences in the thermal behavior of poly (vinyl alcohol) (PVA) raw powder and physically crosslinked films were investigated using various methods, such as thermogravimetric analysis (TGA) and derivative TGA (DTGA), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction...
Synthesis and properties of Poly(vinyl alcohol) hydrogels with …
Apr 1, 2022 · PVA hydrogels with high strength and toughness are fabricated by dual physical and chemical cross-linking. The best comprehensive mechanical properties can be achieved by reaction at room temperature followed with freeze-thaw and annealing treatment.
Kinetics Study of PVA Polymer by Model-Free and Model-Fitting …
Thermogravimetric Analysis (TGA) serves a pivotal technique for evaluating the thermal behavior of Polyvinyl alcohol (PVA), a polymer extensively utilized in the production of fibers, films, and membranes. This paper targets the kinetics of PVA thermal degradation using high three heating rate range 20, 30, and 40 K min −1.
Tuning the thermal and mechanical properties of poly(vinyl alcohol ...
Nov 18, 2021 · The thermal stability of PVA and the crosslinked PVA-FDCA films heat-treated at 120 °C for 2 h was analyzed using TGA measurements. TGA and derivative thermogravimetric (DTGA) curves are ...
Thermogravimetric analysis (TGA) curves of (A) Pure PVA
The morphological analysis of the synthesized PVA-PPy-Ag nanocomposite films was carried out using Transmission Electron Microscopy (TEM).
Machine Learning Backpropagation Prediction and Analysis of the …
Feb 5, 2024 · Artificial neural network backpropagation of machine learning algorithms were used for developing mathematical descriptions of the percentage weight loss (output) by these PVA materials as a function of the heating rate (input 1) and …
Thermal Decomposition Behavior of Poly (Vinyl Alcohol) with …
Feb 3, 2012 · UV-Vis spectroscopy, thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and TGA-FTIR were used to detect the volatile and nonvolatile products of the thermal decomposition of PVA.
Thermal degradation study of PVA derivative with pendant ...
Feb 1, 2015 · The PVA-PT DSC/TGA and pyrolysis analysis confirmed that the thermal PVA-PT decomposition begins above 130 °C after the loss of the trapped water within the polymeric chains. The proposed decomposition reactions are confirmed by MS.