Polyvinyl Alcohol 1788

Polyvinyl alcohol (PVA) is widely used in the paper industry due to its excellent film-forming and adhesive properties. PVA is typically used in the paper manufacturing process as a binder, coating agent, or surface sizing agent. Here are some common applications of PVA in the paper industry:   1.Surface Sizing: PVA is used as a surface sizing agent to improve the surface properties of paper, such as its smoothness, printability, and water resistance. It forms a thin film on the surface of the paper, reducing the penetration of liquids and improving the ink receptivity.   2. Binder for Coatings: PVA is used as a binder in the formulation of coatings applied to paper surfaces. It helps in binding pigments and other additives to the paper, enhancing the color retention, gloss, and overall performance of the coatings.   3. Adhesive for Paperboard: PVA is utilized as an adhesive in the production of paperboard and cardboard boxes. It provides excellent adhesion between the layers of paper, improving the overall strength and durability of the packaging materials.   4. Release Agent: PVA can be used as a release agent in the paper industry. It is applied to the surfaces of rollers and machinery to prevent sticking and improve the smooth flow of paper during the production process.   5. Fiber Treatment: PVA can be applied to paper fibers to improve their bonding properties and enhance the paper's strength and tear resistance.   It's important to note that the specific grade of PVA used in the paper industry may vary depending on the desired properties and requirements of the paper or paperboard being produced.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards. PVA 088-08 & 05-88   PVA 100-27 & 17-99   PVA 088-20 & 17-88  

Polyvinyl alcohol (PVA) is a polymer that undergoes degradation under certain conditions. The degradation of PVA can occur through various mechanisms, including physical, chemical, and biological processes.   Physical degradation: PVA can degrade through mechanical forces such as abrasion, shearing, or exposure to extreme temperatures. These physical processes can lead to the breakdown of the polymer chains and a reduction in its molecular weight.   Chemical degradation: PVA is susceptible to chemical degradation when exposed to certain chemicals, including strong acids or bases, oxidizing agents, and UV radiation. These agents can break the chemical bonds within the polymer structure, resulting in the fragmentation of PVA molecules.   Biological degradation: PVA is generally considered biodegradable, meaning it can be broken down by microorganisms present in the environment. Certain bacteria and fungi have enzymes capable of degrading PVA, converting it into simpler compounds such as water, carbon dioxide, and biomass.   The rate of PVA degradation depends on various factors, including the molecular weight and structure of the polymer, the environmental conditions, and the presence of degrading agents. In general, PVA is known to degrade slowly, especially in dry environments and at low temperatures. However, the degradation rate can be enhanced by controlling these factors or by using specific catalysts or enzymes designed for PVA degradation.   It's important to note that the specific degradation behavior of PVA can vary depending on the formulation and additives used, as well as the intended application. Therefore, it is recommended to consult the manufacturer's guidelines and conduct specific tests to understand the degradation characteristics of PVA in a given context.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA,PVA 088-20 & PVA 1788) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.  

Polyvinyl alcohol (PVA,PVA 088-20 & PVA 1788) is generally considered safe for use in various applications and has low toxicity. When consumed orally, PVA is not absorbed by the body and passes through the digestive system without being metabolized. It is essentially inert and does not have any nutritional value.   Since PVA is water-soluble, excessive ingestion of large amounts could potentially cause gastrointestinal discomfort, such as bloating or diarrhea. However, it is worth noting that PVA is not intended for consumption and is not a food ingredient.   In medical and pharmaceutical applications, Polyvinyl alcohol is used in various forms, including eye drops, contact lenses, and drug delivery systems. In these cases, PVA is designed to be safe for specific uses and is tested and regulated accordingly.   As with any substance, it is important to use PVA in accordance with its intended purpose and follow safety guidelines provided by manufacturers. If you have specific concerns or questions about the use of PVA or any other substance, it is recommended to consult with a healthcare professional.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com   ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.