Producing polymer-grade lactide requires control of both chemical impurities and stereoisomer composition. Residual water, lactic acid, oligomers and unwanted lactide isomers can affect ring-opening polymerization, molecular weight development and the crystallization behavior of polylactic acid (PLA). Vacuum distillation separates components…
High-molecular-weight polyglycolic acid (PGA) production requires control of more than glycolide conversion. During continuous polymerization, changes in viscosity, crystallization and heat transfer can affect material transport, while residual monomer, moisture and thermal exposure influence final resin properties. Glycolide ring-opening polymerization…
Introduction Green chemical technologies address different sources of environmental impact in chemical manufacturing. Carbon fermentation converts industrial waste gases into chemical feedstocks, molecular recycling recovers monomers from discarded polymers, and bio-based processes replace selected fossil-derived inputs. Industrial feasibility depends on…