Polyvinyl alcohol, polyvinyl alcohol (PVOH, PVA, or PVal), is a water-soluble synthetic polymer, with the general chemical formula (C2H4O)n. Polyvinyl alcohol should not be confused with polyvinyl acetate, also available and known as an effective wood preservative. Polyvinyl alcohol has a white granular appearance and is odourless.

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USES POLYVINYL ALCOHOL

The polyvinyl alcohol or PVA is a synthetic, water-soluble polymer with a multitude of uses listed below.  

RAW MATERIAL FOR THE MANUFACTURE OF OTHER POLYMERS

The main use of PVA in industry is as a raw material for the production of other polymers such as: 

- Polyvinyl nitrate (PVN): Vinyl nitrate is used in some propellants and mouldable explosives. 

- Polyvinyl acetals: Polyvinyl butyral (PVB) and polyvinyl formaldehyde (PVF) are examples of this family of polymers. The preparation of polyvinyl butyral is the largest use of polyvinyl alcohol in the US and Western Europe. By far the most important polymer among them is poly(vinyl butyral), which is used as a plastic interlayer for aircraft and automotive safety glass.

- Manufacture of vinylon or vinalon fibreVinalon has become the most widely used fibre in Japan. It is used for various textiles, instead of nylon or cotton. Apart from making clothes, vinalon is used for shoes, ropes and others. Vinalon is resistant to heat and other chemical attacks, it is stable, but it is a stiff fabric, difficult to dye and costly to manufacture.

PVA IN THE MANUFACTURE OF ADHESIVES

PVA is a key component in the manufacture of polyvinyl acetate adhesives. 

POLYVINYL ALCOHOL WATER-SOLUBLE PACKAGING FILM

Different products are packaged in water-soluble capsules or doses, such as powder or liquid laundry detergent, cleaning products. Also in swimming pool products, pigments, inks, fragrances, water treatment products, additives, agricultural products, aggressive chemicals and others. This water soluble film is polyvinyl alcohol or PVA. 

COATING AND PROTECTION ON DIFFERENT ELEMENTS

PVA is also used as a carbon dioxide barrier in polyethylene terephthalate (PET) bottles. In paper coatings or as a protective element in chemical resistant gloves. 

MAKING SLIME

PVA is the material on which the borax turning it into a slime. The school glue adhesives used contain a high % of PVA and are therefore used for making slimebut the use of pure PVA will give you a slime of greater flexibility and quality.

PVA ON 3D PRINTING MEDIA

In 3D printing, PVA's water solubility makes it an excellent filament for making supports for parts that have overhangs or delicate areas where ABS or PLA supports are not an option. The main advantage of using PVA instead of other support materials is its solubility in water: just soak the part in water for 2-3 hours (longer the larger the print). The polyvinyl alcohol dissolves completely, leaving unpainted lines in the overhanging areas of the object you have created. You can use hot water to speed up the process

OTHER USES OF POLYVINYL ALCOHOL

PVA is also used in feminine hygiene and adult incontinence products as a biodegradable plastic film, as a mould release agent for certain polymers, for eye drops and as a lubricant solution for rigid contact lenses. It is used as a fixative for sample collection, especially stool samples and in the medical field as a coating for tablets, biofermentation and topicals for pharmaceuticals.

PROPERTIES OF POLYVINYL ALCOHOL

You can see the properties of polyvinyl alcohol in this section: Properties polyvinyl alcohol

Buy Polyvinyl Alcohol - PVA

Polyvinyl alcohol (PVA) is a water-soluble synthetic polymer that has a wide range of applications in various industries. It is a versatile material that can be used for many purposes due to its unique properties such as high tensile strength, flexibility, and good adhesion to many substrates. Here are some of the most common uses of PVA:

Adhesives: PVA is widely used in the adhesive industry due to its excellent bonding properties. It is a popular ingredient in white glue, wood glue, and other adhesives. PVA glue is water-soluble and dries clear, making it perfect for many applications, including paper crafts, bookbinding, and woodworking.

Textile industry: PVA is used in the textile industry for various purposes, such as a sizing agent, finishing agent, and a binder for non-woven fabrics. As a sizing agent, PVA is used to improve the strength, stiffness, and abrasion resistance of the fibers. As a finishing agent, PVA is used to give fabrics a soft and smooth feel. In non-woven fabrics, PVA is used as a binder to hold the fibers together.

Applications of PVA

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Packaging: PVA is used in the packaging industry as a coating and adhesive for paper and cardboard. It provides excellent adhesion to various substrates and is water-resistant, making it ideal for packaging products that need to be protected from moisture.

Construction: PVA is used in the construction industry as a mortar admixture and a bonding agent. As a mortar admixture, PVA improves the strength, durability, and workability of cement and concrete. As a bonding agent, PVA is used to bond tiles, plaster, and other building materials to various surfaces.

Paper and pulp industry: PVA is used in the paper and pulp industry as a wet-strength resin and a binder for paper coatings. As a wet-strength resin, PVA improves the strength of paper when wet, making it suitable for packaging and other applications where the paper is likely to come into contact with moisture. As a binder for paper coatings, PVA is used to improve the gloss, printability, and ink adhesion of the paper.

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Medical industry: PVA is used in the medical industry for various applications, such as drug delivery, tissue engineering, and wound dressings. In drug delivery, PVA is used as a carrier for drugs, as it can be easily formulated into different forms such as gels, films, and nanoparticles. In tissue engineering, PVA is used as a scaffold material for the regeneration of damaged tissues. In wound dressings, PVA is used to create hydrogels that can keep the wound moist and promote healing.

Food industry: PVA is used in the food industry as a packaging material and a thickener. As a packaging material, PVA is used to create edible films that can be used to package foods such as cheese, meats, and fruits. As a thickener, PVA is used to increase the viscosity of food products such as soups, sauces, and dressings.

Cosmetics industry: PVA is used in the cosmetics industry as a thickener, stabilizer, and emulsifier. As a thickener, PVA is used to increase the viscosity of lotions, creams, and gels. As a stabilizer, PVA is used to prevent the separation of different ingredients in a product. As an emulsifier, PVA is used to create stable emulsions of oil and water in products such as creams and lotions.

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