Complex sentence: The degree of polymerization of poly (vinyl acetate) is typically 100 to 5000 while its ester groups are sensitive to base hydrolysis and will slowly convert PVAc into polyvinyl alcohol and acetic acid.
Split into simpler sentences: The degree of polymerization of poly (vinyl acetate) typically is 100 to 5000. The ester groups of the poly (vinyl acetate) are sensitive to base hydrolysis and will slowly convert PVAc into polyvinyl alcohol and acetic acid.