METHOD FOR PREPARING POLYAMIDE BY ANION RING-OPENING POLYMERIZATION AND POLYAMIDE PREPARED THEREBY

摘要

The present invention relates to a method for preparing a polyamide by anionic ring-opening polymerization and a polyamide prepared thereby, and more particularly, to a method for preparing a polyamide by anionic ring-opening polymerization and a polyamide prepared thereby, wherein the method is an eco-friendly processing method not using a solvent as a catalyst and enables polymerization to a uniform molecular weight with a high conversion rate in a short polymerization reaction time at a low temperature, compared with an existing polymerization method. The method for preparing a polyamide by anionic ring-opening polymerization according to the present invention to attain such a purpose is a method for preparing a polyamide by an anionic polymerization reaction, wherein lactam, and based on 100 parts by weight of the entire lactam, 0.01 parts by weight to 20 parts by weight of an alkali metal as an initiator, 0.3 parts by weight to 10 parts by weight of a molecular weight controller, and 0.002 parts by weight to 1.0 part by weight of carbon dioxide as an activator may be included. As described above, the present invention is directed o an eco-friendly processing method not using a solvent as a catalyst and has an effect that enables polymerization to a uniform molecular weight with a high conversion rate in a short polymerization reaction time at a low temperature, compared with an existing polymerization method