PVA is one of the important water-soluble polymer

and PVA with low molecular weight has been widely used in many fields

such as cosmetics

foods

medicine

etc. In this study

the low molecular weight PVA was produced by solution polymerization

in which VAc was used as monomer

ABIN as initiator and methanol as solvent. In this experiment

by adding molecular adjustor and optimizing the experimental condition through orthogonal test

low molecular weight PVAc was firstly synthesized and then with NaOH as catalyst

white PVA particles with low molecular weight were synthesized. For this PVA

the average degree of polymerization is 600

the degree of alcoholysis is 80%.