| abstract |
glycolic acid polymers and method for producing them. Described here is a significantly simplified viable production method that avoids difficult lactonization steps and converts a low molecular weight aliphatic polyester, which consists of hydroxy acids and a comonomer, whose molecular weight has been increased by growth step polymerization reactions. the molecular weight of the aliphatic polyester, based on a comparison of initial and final weight average molecular weights (mw.1/ mw.2 ), increased significantly at a rate that allows the use of reactive extrusion to produce high weight aliphatic polyesters molecular structure in a simple and economically viable way. |