After mensurating the chemical structure and the crystal form of zinc lactate and recycled zinc lactate,the effects of catalyst and oligomerization time on the yield of crude lactide and the content of lactic acid in lactide pr.

Study of influence of concentration on the recovery of zinc was carried out.

The synthesize and characterization of nano zinc lactate crystalline;

The catalytic efficiency of zinc lactate as a catalyst to prepare lactide from lactic acid was evaluated compared with those commonly used catalysts including zinc oxide,solid superacid and stannous octate,which indicated a much higher catalytic efficiency of zinc lactate than others.

When using some nutrition additives such as zinc lactate,calcium lactate,zinc acetate,ZnSO4 and taurine (a sulfonic acid with amino group) as nontoxic catalysts,the intrinsic viscosity ranged between 010.