1、Solubility parameter of poly(vinyl acetate)
Solubility parameter of poly(vinyl acetate) Data extract from Landolt-Börnstein VIII/6D2: Polymers, Polymer Solutions, Physical Properties and their Relations I (Thermodynamic Properties: PVT-data and miscellaneous properties of polymer solutions)
2、Polyvinyl acetate solubility
[Pg.590] Solubility soluble in ethanol and methanol sparingly soluble in acetone and propan-2-ol practically insoluble in chloroform, dichloromethane, and water. In buffer solutions, polyvinyl acetate phthalate (200mg/L) is insoluble below pH 5 and becomes soluble at pH values above 5.
3、Hansen solubility parameter: from polyethylene and poly(vinyl acetate
The Hansen solubility parameters (HSPs) of two ethylene–vinyl acetate (EVA) copolymers (with 18 and 33 wt% of vinyl acetate) and their corresponding homopolymers (polyethylene, PE, and poly (vinyl acetate), PVAc) have been studied at various temperatures, employing the previously obtained Flory–Huggins parameters.
Solubilities of fifteen solvents in copolymers of poly(vinyl acetate
Solubilities of fifteen solvents in copolymers of poly (vinyl acetate) and poly (vinyl chloride) from gas-liquid chromatography. Estimation of polymer solubility parameters
Estimation of solubility parameters for poly(vinyl acetate) by inverse
Hildebrand—Scatchard solubility theory was combined with Flory theory in order to estimate infinite dilution solubility parameters (δ 2∞) for the polymer at 135°C (8.5 ± 0.4) and 25°c (10.2 ±0.5), respectively.
Solubility parameter of poly (vinyl acetate)
Solubilities of 15 polar and nonpolar solvents were measured at 125 and 140°C using a standard gas-liquid chromatograph. Solubilities were obtained in the two homopolymers and in copolymers...
Poly (vinyl acetate)
Polyvinyl acetate usually contains trace amounts of its precursor, vinyl acetate. One of the metabolites of vinyl acetate, acetaldehyde, is a known animal carcinogen.
POLY (VINYL ACETATE)
POLY (VINYL ACETATE) (CAS 9003-20-7) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses, prices, suppliers, SDS and more, available at Chemicalbook.
The Determination of the Solubility Parameter (δ) and the Mark
Our research entailed experimentally determining the solubility parameter (δ) of PVAc by measuring the intrinsic viscosity [η] of several different molecular weight PVAc samples in four different solvents (acetone, methanol, tetrahydrofuran (THF), and toluene,) at 25°C using glass capillary viscometry.
Poly (vinyl Acetate)
PVOH is produced by hydrolysis of PVA and the strong hydrogen bonding imparted by the –OH groups means that pure PVOH is water soluble. The degree of water solubility is controlled by the amount of hydrolysis.
With the continuous development of the chemical industry, poly(vinyl acetate) (PVAc), as a novel polymer material, has garnered significant attention due to its unique physical and chemical properties. PVAc, a polymer synthesized via the copolymerization of ethylene and vinyl acetate, exhibits excellent comprehensive performance, including robust mechanical properties, chemical resistance, and superior electrical insulation. its solubility is a critical factor limiting its full potential in practical applications.
The solubility of PVAc is influenced by multiple factors, with temperature being the most significant. At room temperature, PVAc typically demonstrates good solubility in various organic solvents, such as dichloromethane and trichloroethylene. This is attributed to the ability of ester groups in the PVAc molecular chain to form hydrogen bonds with these solvents, facilitating dissolution. when the temperature exceeds 100°C, the solubility of PVAc markedly decreases. For instance, at elevated temperatures, PVAc may begin to decompose or melt, rendering it insoluble in water or other polar solvents.
Beyond temperature, other factors also impact PVAc’s solubility. Solvent polarity plays a crucial role: polar solvents like methanol and ethanol enhance solubility by forming stronger hydrogen bonds with the ester groups in PVAc. Conversely, nonpolar solvents such as hexane and heptane struggle to interact effectively with PVAc, resulting in poor solubility. Additionally, the molecular weight and structural complexity of PVAc affect its solubility; generally, higher molecular weight or more complex structures correlate with reduced solubility.
Understanding PVAc’s solubility is vital for its industrial applications. In fields like coatings and adhesives, PVAc is widely used to produce high-performance materials due to its chemical resistance and electrical insulation properties. realizing these applications requires ensuring PVAc’s solubility in appropriate solvents. Without adequate solubility, PVAc cannot fulfill its intended functions. Thus, optimizing solubility is essential for maximizing its performance in diverse applications.
To improve PVAc’s solubility, extensive research has focused on modifying its molecular structure and polymerization parameters. Introducing specific functional groups, adjusting molecular chain length, or altering molecular weight distribution can enhance solubility in polar solvents. Copolymerization or grafting techniques have also been employed to incorporate new functional groups, thereby boosting solubility in target solvents.
PVAc’s solubility not only affects its industrial performance but also influences production processes and costs. In-depth studies on solubility are therefore critical for advancing its practical use. A thorough understanding of solubility enables better design and application of PVAc materials to meet specialized needs across industries, while also reducing costs and enhancing market competitiveness.
the solubility of PVAc is a complex yet pivotal issue, governed by factors such as temperature, solvent polarity, and molecular structure. By comprehending these factors and implementing targeted strategies, PVAc’s solubility can be effectively improved, expanding its potential applications across various fields.
