Polyvinyl Alcohol (PVA) film is a kind of functional material with excellent properties and wide applications. Because of its unique chemical structure and physical properties, it has been widely used in many fields. The following is a detailed introduction to the properties of polyvinyl alcohol films.
1. Good transparency: PVA film has good transparency, light transmission rate of more than 90%, so that it has a wide range of uses in optical applications, such as liquid crystal display polarizer, optical filter and so on.
2. Excellent mechanical properties: PVA film has good tensile properties and rupture resistance, with high tensile strength and elongation at break. This property makes PVA film has important applications in packaging materials, reinforced fibers and other fields.
3. Good chemical resistance: PVA film has good corrosion resistance to water and organic solvents, so that it can still maintain its physical properties in high humidity environment. This makes PVA film an ideal material for water-soluble fertilizer packaging, medicine preservation and other fields.
4. Solubility: polyvinyl alcohol film has good solubility in water and is a water-soluble polymer that can be completely dissolved. This characteristic makes PVA film can be used as water-soluble packaging film, water-soluble drug coating agent and so on.
5. Thermal stability: PVA film has a high melting point and glass conversion temperature, and can maintain good physical properties at higher temperatures. This enables the application of PVA films in high temperature environments.
6. Biocompatibility: polyvinyl alcohol film is non-toxic and harmless to the human body, has good biocompatibility and will not have any harmful effects on the human body. This makes PVA film widely used in medical devices, artificial organs and other fields.
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