1、Polyvinyl Acetate (PVA)

The following table provides a comprehensive list of polyvinyl acetate (PVA) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).

2、PVAc Polymer Mechanic

A detailed overview of the polymer PVAc (Polyvinyl Acetate), including applications & 50+ atomic, electrical, mechanical, physical & thermal properties.

3、POLY (VINYL ACETATE)

Polyvinyl acetate is derived from the polymerization of vinyl acetate; the catalysts used in polymerization may include hydrogen peroxide, peroxy sulfates, or various redox combinations.

4、Basic Physical Properties of PVOH Resin

According to this table, the specific gravity of PVOH decreases as the amount of residual acetate group increases, and the values for partially hydrolyzed products of PVOH by Sone, et al. shown in Figure 2 also show the same tendency.

5、Polyvinyl Acetate_化工百科

Polyvinyl Acetate - 简介 聚醋酸乙烯酯，也被称为聚乙烯酸乙酯，是一种聚合物材料。 性质： 1. 聚醋酸乙烯酯是无色至微黄色的固体，在常温下呈现为高透明度和玻璃状的外观。 2. 具有良好的耐化学性，耐溶剂性和耐热性。 3. 高度可塑，可用于制成各种 ...

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About 83% of the VAM manufactured is used to produce polyvinyl acetate emulsions and resins. Polyvinyl acetates can be homopolymers (polymerized alone) or copolymers (polymerized with other monomers such as acrylate esters) to produce polymers for a wide variety of industrial and consumer products, including

Polyvinyl Acetate

Description Polyvinyl Acetate occurs as colorless to light yellow granules or glassy lumps. Identification Dissolve about 1 g of Polyvinyl Acetate in 5 ml of toluene, and proceed as directed under the Thin Film Method in Infrared Spectrophotometry.

Composition of POLYVINYL ACETATE

Note: not every material in the above list is available in the ASTAR and PSTAR databases.

SKYSEVEN CHEMICAL

VAM is a chemical building block used to manufacture a wide variety of industrial and consumer products, including polyvinyl acetate used to produce paints, adhesives and coatings for flexible substrates; polyvinyl alcohol used to produce adhesives, coatings and water soluble packaging films; polyvinyl acetals used to produce insulation for ...

Vinyl Acetate Monomer

DESCRIPTION Vinyl Acetate Monomer used in the production of polyvinyl alcohol, adhesive.

Among numerous polymer materials, polyvinyl acetate (PVAc) plays a significant role in various fields due to its unique physical and chemical properties. As a physical quantity that measures the density of a substance, specific gravity is crucial for understanding its physical properties and engineering applications. This article delves into the specific gravity of polyvinyl acetate, analyzing the scientific principles behind it and its practical applications.

I. Definition and Measurement of Polyvinyl Acetate’s Specific Gravity

Specific gravity refers to the mass of a substance per unit volume, typically expressed in grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³). For polyvinyl acetate, specific gravity denotes the mass of the polymer per unit volume under specific temperature and pressure conditions. Common methods for measuring specific gravity include buoyancy methods, pycnometer methods, and hydrometer methods.

II. Factors Influencing the Specific Gravity of Polyvinyl Acetate

1. Molecular Weight: Molecular weight is a key factor affecting specific gravity. Higher molecular weight results in greater density and, consequently, higher specific gravity.
2. Degree of Polymerization: The degree of polymerization, which reflects the average number of repeating units in a polymer chain, influences specific gravity. Longer chains enhance intermolecular forces, increasing specific gravity.
3. Temperature: Temperature fluctuations affect molecular motion, altering density. Generally, higher temperatures reduce density (and specific gravity), while lower temperatures increase it.
4. Additives: Additives can modify specific gravity. For example, plasticizers reduce polymer density, thereby decreasing specific gravity.

III. Applications of Polyvinyl Acetate’s Specific Gravity

The specific gravity of polyvinyl acetate correlates with its physical properties, such as glass transition temperature, melting point, and thermal stability, directly impacting its applications:

1. Packaging Materials: With a low specific gravity (~0.91 g/cm³), PVAc reduces transportation costs and energy consumption, making it ideal for packaging.
2. Textile Industry: Its moderate specific gravity, elasticity, and wear resistance suit PVAc for textile manufacturing.
3. Construction: PVAc’s low specific gravity, combined with impact resistance and durability, enables applications in flooring, walls, and ceilings.

IV. Scientific Significance of Polyvinyl Acetate’s Specific Gravity

The specific gravity of PVAc reflects not only its physical properties but also its molecular structure. Studying variations in specific gravity provides insights into microscopic polymer structures, guiding the development of high-performance materials.

The specific gravity of polyvinyl acetate is a complex property influenced by multiple factors. In-depth research into specific gravity enhances our understanding of PVAc’s physical characteristics and informs its application across fields. Advances in science and technology may unveil new materials, offering further opportunities to explore specific gravity.