This invention belongs to the field of polymer materials technology, specifically relating to a modified polylactic acid, its preparation method, and its application in the preparation of spunbonded nonwoven fabrics. The preparation method of the modified polylactic acid of this invention includes the following steps: uniformly mixing polylactic acid with N,N,N',N'-tetraglycidyl-4,4'-diaminodiphenylmethane, and then granulating the mixture using a twin-screw extruder. The resulting modified polylactic acid exhibits improved thermal stability, successfully solving the problem of polylactic acid being unable to be processed into nonwoven fabrics on large-scale spunbonding equipment. The modified polylactic acid does not affect the production of spunbonded nonwoven fabrics, and its processing is smoother.
Country Code: CN
Application Number: CN202311650987.7
