Applications of PVOH and Why It Is Chosen
Below we summarize key applications together with reasons for adoption and evaluation criteria.
Dispersant / Emulsifier Applications (protective colloid / interfacial activity) — “Used for stable dispersion”
Emulsion Polymerization (vinyl acetate emulsions)
Used as a stabilizer in producing vinyl acetate emulsions such as those used in wood adhesives.
Why PVOH is selected:
Its interfacial activity and protective colloid behavior stabilize emulsions and yield adhesives with strong water resistance, heat resistance, and initial bonding strength*.
Evaluation points:
polymerization stability (dispersion stability), adhesion, particle size control, emulsion viscosity and stability
PVC Polymerization Suspending Agent
Used in suspension polymerization of polyvinyl chloride (PVC) resin.
Why PVOH is selected:
High interfacial activity and protective colloid function stabilize the polymerization process, enabling uniform, porous PVC particles with good processability. Selecting appropriate PVOH grades (degree of hydrolysis, polymerization degree) allows tuning of particle design.
Evaluation points:
control of particle size/distribution, porosity (plasticizer absorption)
