PVA 088-50

Polyvinyl alcohol is a colorless, odorless, non-toxic polymer substance. Because of its good wettability, emulsification, dispersion, stability and other characteristics, it is often used to manufacture high-efficiency surfactants in detergents. Polyvinyl alcohol can effectively remove oil and stains, and can quickly dissolve in water. It is a green and environmentally friendly cleaning agent.   In different washing daily necessities： 1. Clothing cleaning: Polyvinyl alcohol, as the main component in detergent powder and liquid, has an excellent effect on clothing cleaning. After washing, the clothes will not only be completely clean, but also become soft and comfortable. 2. Cleaning tableware and glassware: As a surfactant in detergents, polyvinyl alcohol can quickly dissolve and remove dirt on tableware and glassware, making them clean and shiny. 3. Household cleaning: Polyvinyl alcohol is also often used in household cleaning, such as cleaning floors, cabinets and other surfaces. It can be mixed with other detergents to achieve better cleaning results.   Advantages： 1. PVA can enhance the adhesion and dispersion of detergents, making the cleaning effect more thorough. 2. PVA has stable molecular weight and good anti-pollution properties, which can effectively extend the service life of detergents. 3. PVA is a green and environmentally friendly raw material that has no negative impact on humans and the environment.   In short, polyvinyl alcohol is widely used in detergents. As an efficient surfactant, it can make our lives more convenient and healthier.   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 2488 & PVA 088-50   PVA 1799 & PVA 100-27 PVA 0588 & PVA 088-05  

Polyvinyl alcohol (PVA) is a water-soluble polymer, not to be confused with PVAc or polyvinyl acetate, which is a water-soluble white glue. In 3D printing, polyvinyl alcohol is popular as a support material because it is water-soluble.   For 3D printing, PVA is the most well-known support material used in  dual-extrusion 3D printers. Typically, fused deposition modeling (FDM) machines use the same material to create the prin ted part and any support structures because there is only one extruder. Depending on the location of the support, removing the support can be a tricky job, not to mention the ugly marks  it can leave on the part. Dual extrusion FDM printers, on the other hand, allow the use of different materials for parts and brackets, which is where PVA comes in handy.     The best advantage of PVA filament is that it is water-soluble, and the printed support structure simply needs to be soaked in water for a few hours. This method also prevents any marks from being left on the part and reduces the need for post-processing such as sanding. It's not as simple as it sounds, dual extrusion can be quite tough and requires a lot of calibration to get a high quality 3D print. As a support material, PVA generally works well with PLA filament because it requires similar printing conditions. PLA is a hydrophobic material, which means it does not "like" water, so if a PLA part is printed with a PVA support, only the support will dissolve in the water, leaving the other part in perfect condition.   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.

Polyvinyl alcohol (PVA) is a water-soluble polymer material that is widely used. The hydrogel prepared from it is a gel with water as the medium. It is a polymer network system that can maintain a certain shape and have a series of unique properties. In addition to the properties of general gels, PVA hydrogels also have the advantages of low toxicity, good mechanical properties (high elastic modulus and high mechanical strength), large water absorption and good biocompatibility.   They have a wide range of applications in the biomedical field. application. For example: drug sustained-release carriers and microcapsules; application in wound dressings; artificial organs and tissues; used in orthopedic surgery to repair or replace articular cartilage.   Preparation method of PVA hydrogel Physical cross-linking method: repeated freezing method, partial freezing and dehydration method. Chemical cross-linking method: chemical reagent cross-linking, radiation cross-linking.   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.

The widespread application of polyvinyl alcohol in various industries benefits from its many excellent properties, such as:   1. Solubility: PVA powder can be dissolved in water. The PVA resin with an alcoholysis degree of less than 95% can be dissolved in room temperature water, and another one with an alcoholysis degree of more than 99.5% can only be dissolved in hot water above 95℃.   2. Thermal stability: Polyvinyl alcohol softens when heated and does not change significantly below 40℃. Glass transition temperature: 75~85℃. It slowly changes color and becomes brittle when heated to above 100℃. Above 160℃, long-term heating will gradually color, dehydrate, etherify, and lose solubility; above 220℃, it will decompose to generate water, acetic acid, acetaldehyde, and crotonaldehyde; above 250℃, it will become containing conjugated double bonds polymer.   3. Chemical resistance: PVA is almost unaffected by weak acids, weak bases or organic solvents, and has high oil resistance.   4. Storage stability: PVA is a low-viscosity polymer, and its aqueous solution is very stable at room temperature. The aqueous solution will not deteriorate during storage.   5. Film-forming properties: Due to the high adhesion between PVA molecules, PVA is easy to form films. The formed film is colorless and transparent, has good mechanical strength, has a smooth surface without being sticky, and has good solvent resistance. The molecular film has good light transmittance, high moisture permeability, is uncharged, does not absorb dust, and has good printability.   6. Chemical properties: PVA is almost unaffected by weak acids, weak bases or organic solvents, and has high oil resistance. It can be regarded as a linear polymer with secondary hydroxyl groups. The hydroxyl group in the molecule has high activity and can carry out typical chemical reactions of low alcohols, such as esterification, etherification, acetalization, etc., and can also react with many inorganic compounds or organic compounds.   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.

  Polyvinyl alcohol(PVA) plays several important roles in cosmetics, including:   Moisturizing effect. Pva absorbs moisture from the air to help keep skin hydrated and avoid dryness.   Lubricant. It reduces the friction between cosmetics and the skin, making cosmetics easier to apply.   Thickening agent. PVA can increase the viscosity of cosmetics, making it easier to adhere to the skin and extend the action time of cosmetics.   Emulsifier. The oily and water-based ingredients in cosmetics are effectively mixed together to form an emulsion-like product.   PVA also has a certain purification effect, can effectively clean the skin, while promoting the absorption of other beneficial ingredients, increase the permeability and effect of cosmetics. Pva is also used as a binder in cosmetics to help maintain product stability and extend shelf life. In general, the application of PVA in cosmetics aims to provide multiple effects such as moisturizing, lubricating, thickening, emulsifying and purifying, making cosmetics more suitable for skin use, while extending the service life of products.   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.

The aqueous solution of PVA has extremely strong adhesion to materials containing cellulose (such as paper, cloth, wood, etc.) and has the advantage of being safe and non-toxic. It can be used for cardboard lamination, corrugated cardboard bonding and office glue. Kraft bags used for packaging heavy items such as cement, fertilizers, grain, etc. also use PVA as an adhesive.   Urea-formaldehyde resin and phenolic resin modified with PVA can be used as adhesives for laminates and artificial panels.   PVA aqueous solution (by adding appropriate fillers and additives) can also be widely used to prepare adhesives required for printing and binding paper tubes, cartons and other paper links.   PVA condenses with formaldehyde, butyraldehyde, glyoxal or other aldehydes under acid catalysis to produce polyvinyl acetals (such as PVAF, PVB) with stronger water resistance, adhesion and mechanical strength. ) is widely used in construction, coatings, adhesives, safety glass interlayers and other fields. As the degree of polymerization of PVA increases, the viscosity of the acetal increases.   PVA is an excellent protective colloid and dispersant for the homopolymerization of vinyl acetate or copolymerization with other monomers to produce emulsions (white glue), and is crucial in the production of white glue. Generally, as the degree of polymerization of PVA increases, the viscosity of the produced emulsion increases. Partial alcoholysis polyvinyl alcohol (such as PVA 17-88, PVA 24-88) is often used in combination with fully alcoholysis polyvinyl alcohol(PVA 17-99). The use of partially alcoholytic PVA can increase the stability of the emulsion. Use Completely alcoholylated PVA can increase the water resistance of emulsions.   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 2488 &088-50   PVA 1788 & 088-20   PVA 17-99 & 100-27    

  Polyvinyl alcohol (PVA) has several applications in agriculture, including:   1. Seed coating: PVA can be used as a seed coating material to enhance germination, improve seedling growth, and provide protection against pests and diseases.   2. Soil stabilizer: PVA can be added to soil to improve its structure and stability, especially in erosion-prone areas. It helps reduce soil erosion, increase water retention, and enhance soil fertility.   3. Mulching film: PVA films can be used as mulching materials to cover the soil around plants. This helps to conserve moisture, control weed growth, and maintain stable soil temperatures, leading to improved plant growth and higher crop yields.   4. Slow-release fertilizers: PVA can be incorporated into fertilizer formulations to create slow-release or controlled-release fertilizers. This allows nutrients to be released gradually over time, providing sustained nutrition to plants and minimizing nutrient leaching.   5. Crop protection: PVA can be used as a component in biodegradable agricultural films for crop protection purposes. These films can be used for insect barriers, weed control, and microbial resistance, reducing the reliance on conventional plastic films.   6. Hydrogel applications: PVA hydrogels have been utilized in agriculture for various purposes, such as water retention in drought-prone areas, as carriers for controlled release of agrochemicals, and as bio-based materials for seed germination and plant growth.   These applications demonstrate the versatility of PVA in agriculture, providing solutions for improving plant growth, conserving resources, and promoting sustainable farming practices.   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.  

Polyvinyl alcohol (PVA) has various applications in the film industry. Here are some of the common applications of PVA in films:   1. Water-soluble film: PVA can be used to produce water-soluble films that are used for packaging various products such as detergents, agrochemicals, and personal care products. These films dissolve in water, providing convenience and reducing waste.   2. Food packaging film: PVA can be used as a coating or component in food packaging films. It provides excellent oxygen barrier properties, moisture resistance, and aroma retention, helping to extend the shelf life of food products.   3. Biodegradable film: PVA can be used to produce biodegradable films that are environmentally friendly. These films can replace traditional plastic films in applications such as mulch films, agricultural films, and compostable packaging materials.   4. Drug delivery films: PVA films can be used as drug delivery systems in the pharmaceutical industry. These films can be loaded with active pharmaceutical ingredients and used for transdermal patches, oral dissolvable films, or other drug delivery applications.   5. Optical film: PVA can be used in the production of optical films for applications such as LCD displays and optical lenses. These films provide excellent optical clarity, high transparency, and low birefringence.   6. Photographic film: PVA has been widely used in the production of photographic films. It acts as a binder and protective coating, ensuring adhesion of the photo emulsion to the film base and providing surface protection.   Overall, PVA has versatile properties that make it suitable for a wide range of film applications, including water-soluble films, food packaging films, biodegradable films, drug delivery films, optical films, and photographic films.   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 088-50 & PVA 24-88 Polyvinyl alcohol PVA 088-20 & PVA 17-88 Polyvinyl alcohol PVA 100-27 & PVA 1799 Polyvinyl alcohol    

Polyvinyl alcohol (PVA) is used in textile sizing, which is the process of applying a protective coating to yarn or fabric to enhance its weaving and handling properties. In textile sizing, various grades of PVA can be utilized, depending on the specific requirements of the sizing process and the desired characteristics of the finished textile product.   The selection of the PVA grade depends on factors such as the desired viscosity, film-forming properties, adhesion strength, and water solubility. Generally, medium-to-high molecular weight PVA grades with moderate viscosity are preferred for textile sizing applications. These grades offer good film-forming ability, excellent adhesion to the fibers, and compatibility with other sizing agents.   PVA-based sizing formulations may also include additional additives like lubricants, softeners, antistatic agents, and crosslinking agents to further enhance the performance and processability of the sized yarn or fabric.   It's worth noting that the specific PVA grade and formulation used for textile sizing can vary depending on the type of textile fibers being sized (e.g., natural or synthetic fibers), weaving techniques, and the desired properties of the final textile product.   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.

Pharmaceutical grade polyvinyl alcohol (PVA) is a high-purity form of PVA that meets specific quality standards and regulations for use in the pharmaceutical industry. It is used in various pharmaceutical applications, including as a binder, film former, coating agent, and viscosity modifier.   Pharmaceutical grade PVA undergoes stringent quality control processes to ensure its purity, stability, and safety. It is typically produced using high-quality raw materials and advanced manufacturing techniques to meet the strict requirements of the pharmaceutical industry.   The properties of pharmaceutical grade PVA, such as its solubility, viscosity, and film-forming characteristics, can be tailored to suit specific pharmaceutical formulations. It is often used in the production of tablets, capsules, oral suspensions, ophthalmic solutions, and topical formulations.   Due to its biocompatibility, low toxicity, and good film-forming properties, pharmaceutical grade PVA is widely accepted and used in the pharmaceutical industry. It plays a crucial role in improving the stability, bioavailability, and overall performance of pharmaceutical products.   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.  

Using succinic acid as the cross-linking agent, through the reaction of COOH- and OH-, an ester group is generated, which cross-links the PVA molecules and generates a modified PVA glue that is insoluble in water. The introduced COOH-group can improve its water resistance, hardness, adhesion, etc.   Weigh an appropriate amount of PVA, add water, heat it in a water bath with electric stirring, and control the water bath temperature to 80-90°C. After it is completely dissolved, stop heating to obtain PVA glue. In a water bath at a certain temperature, add an appropriate amount of succinic acid to the above-mentioned PVA glue, stir it under closed conditions to react, and cool to room temperature to obtain a modified PVA glue.   Using succinic acid as the cross-linking agent, PVA glue was modified, and the optimal modification conditions were determined to be: PVA glue mass concentration 7%, reaction temperature 85°C, and PVA glue to succinic acid mass ratio 5.6:1. Here Under the conditions, the hardness, adhesion, viscosity and impact resistance of the modified PVA glue obtained were significantly improved, and the water resistance was also improved. This method can be used to prepare PVA adhesives and coatings that require high adhesion and water resistance. 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.  

Polyvinyl acetal mixed aldehyde adhesive can be prepared by using polyvinyl alcohol (PVA) and crotonaldehyde as the main raw materials, hydrochloric acid (HCl) as the catalyst and acetaldehyde as the modifier.   Put a certain amount of PVA into a three-necked flask equipped with a mechanical stirrer and a reflux condensation device, add deionized water, adjust the water bath temperature to 95°C, and keep it warm for 2 hours to fully dissolve it; when the solution cools to room temperature, Slowly add measured HCl dropwise while stirring, and mix thoroughly; heat the water bath to the specified temperature, add crotonaldehyde and acetaldehyde solutions according to the formula, and stir thoroughly; after the reaction is completed, use NaOH solution to adjust the pH value to 8 to 9, and then add Add appropriate amount of urea and stir for 20 minutes.   The results show that when the reaction temperature is (90±2)℃, the reaction time is 4 h, 8% PVA solution is 200 mL, HCl is 1mL, crotonaldehyde is 1.0~1.5mL, and acetaldehyde is 4mL, acetalization The viscosity of the product is moderate, the bonding strength is relatively maximum (4.5MPa), and the water resistance is relatively good; under the premise that other conditions remain unchanged, by changing the amount of crotonaldehyde, the final viscosity of the system can be further adjusted to meet the requirements of wood. Adhesive usage requirements.   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 2488 & 088-50 Modified PVA 725 PVA 1788 & 088-20