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[Chemical Knowledge]：Analysis on the Difference of Pva Models and Application Scenarios

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With the continuous development of science and technology, Pva (polyvinyl alcohol), as an important polymer compound, is widely used in various fields. Pva can achieve different functional products by controlling key parameters such as degree of polymerization, degree of alcoholysis and impurity content. In the market, there are many different models of Pva, which have certain differences and characteristics. Next, we will introduce the differences and application scenarios of Pva models in detail.

us to discuss one of the common Pva models-Pva-1788. Pva-1788 has a high degree of polymerization and alcoholysis, and its solubility is good, which can be used to prepare hydrogel products with high transparency. Due to its unique physical properties, Pva-1788 are widely used in medical and health fields, such as making waveforms to simulate human tissues.

Pva-1788 can also be used as a film-forming agent for electrolyte and nutrient slow-release systems for soil improvement in the agricultural field. Another common model

is the Pva-117. Compared with Pva-1788,Pva-117 has a lower degree of polymerization and a slightly higher degree of alcoholysis. This makes the Pva-117 easier to dissolve in water, and has good adhesion and fluidity, making it widely used in the preparation of adhesives. Not only that, Pva-117 can also be used as a stabilizer for the preparation of iron oxide nanoparticles, as well as an emulsifier in coatings.

there is also a special model of Pva, the Pva-217. Pva-217 is characterized by low gelation temperature, good thermal stability, and is widely used in the field of fiber. In the textile industry, Pva-217 can be used for needle spinning, so that the yarn has a higher tensile force and lower breaking strength.

Pva-217 can also be used as a crosslinking agent for cellulose fibers and play an important role in textile processing.

sum up, as an important polymer compound, Pva has different types of products to choose from in different application fields. Pva-1788 is suitable for medical and health and agriculture, while Pva-117 is widely used in adhesives and coatings, while Pva-217 is mainly used in the textile field. By fully understanding the characteristics and application scenarios of various models of Pva, we can better choose Pva products that suit our needs and achieve better use results.

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