Soluble PVA is soluble in water, the higher the water temperature, the greater the solubility, but it is almost insoluble in organic solvents.
PVA is the only vinyl polymer that can be used by bacteria as a carbon source and energy source.
Pharmaceutical grade polyvinyl alcohol, different from chemical grade polyvinyl alcohol, it is a very safe polymer organic substance, non-toxic to the human body, no side effects, and has good biocompatibility.
Polyvinyl alcohol is an important chemical raw material used in the manufacture of polyvinyl acetal, gasoline-resistant pipes and vinylon, fabric treatment agents, emulsifiers, paper coatings, adhesives, glues, etc.
The production of polyvinyl alcohol is divided into three ways according to the different raw materials: one is petroleum → ethylene → vinyl acetate → polyvinyl alcohol; the second is natural gas → acetylene → vinyl acetate → polyvinyl alcohol; the third is calcium carbide → acetylene → vinyl acetate → Polyvinyl alcohol.