Can PVA water-soluble film and bags be degraded?

PVA, also known as polyvinyl alcohol, is a water-soluble polymer material made by the polymerization and alcoholysis of vinyl acetate monomers. It is also a widely used water-soluble polymer with various excellent properties, ranging between plastic and rubber. It has flexibility, oil resistance, chemical solvent resistance, gas barrier performance, and water resistance after special treatment. PVA has been applied in many fields, in addition to being used as a fiber raw material, it is also widely used in the production of coatings/adhesives/paper processing, emulsifiers, dispersants, and films. The application scope includes daily life, medical care, and building materials.   The pure PVA film has poor water resistance and is greatly limited in practical applications. Therefore, it is necessary to modify and prepare PVA, such as preparing water-soluble film materials with PVA and starch as the main raw materials. Guangzhou Pioneer Tech Co., Ltd. has launched water-soluble films and bags mainly made of PVA, glycerol, and starch in recent years. The preparation processes include Casting film and Blow film, which are mainly used in laundry detergent pods packaging film, dishwasher tablet heat shrinkable packaging film, water transfer printing film, embroidery film, pesticide and chemical packaging, PVOH water-soluble laundry bags for hosptital infection, adhesive strip water-soluble clothing packaging bags, water-soluble die cut(gift) bags, and hot water-soluble non-woven fabric bags. The types of water-soluble temperatures include 10-90 degrees Celsius water solubility, non-toxic, and environmentally friendly.   PVA is an environmentally friendly material because it can be decomposed by microorganisms, so it can be decomposed by microorganisms in soil. In addition, PVA is also used as a packaging material for drugs, which can be safely broken down by the human body even if ingested.   The biodegradability of PVA is related to the environment and conditions. Under natural conditions, the degradation of PVA may take several months or years, while under specific conditions, such as contact with microorganisms, it can quickly hydrolyze and decompose into low molecular weight polymers and monomers, which are usually water-soluble and have little impact on the environment. Research has shown that PVA has both water and biological degradation characteristics. After dissolving in water, it infiltrates the soil and is decomposed by bacteria in the soil, ultimately degrading into carbon dioxide and water.   In summary, PVA does have a certain degradation ability, especially under the action of microorganisms, and its degradation rate may be affected by environmental and other factors

What Do You Want to Say?

Scroll to Top