In this paper,the structure characteristic of lactic acid and lactide are reviewed,The processes of synthesizing lactide by two-step technology are discussed,and the factors that influence the molecular mass of lactic acid oligomer and the yield of lactide are introduced.

Study on chain extension of L-lactic acid oligomer with isocyanate

It included the synthesis of L-lactic acid oligomer, the synthesis of L-lactide by L- lactic acid oligomer depolymerization and the establishment of detecting and analytical methods et al.

Preparation and properties of polylactide/nano-silica in situ composites;

Mechanical properties and degradation properties in vitro of carbon fiber reinforced hydroxyapatite/polylactide composite;

Researches in the catalysts for synthesis of polylactide and its copolymers;

Applications of DSC on the dyeing of PLA fiber;

Investigation on Drawing and Crimping Processes of PLA Staple Fiber;