PMDA vs Epoxy Chain Extenders: A Comprehensive Comparison for Polyester Modification
In the field of polyester modification—particularly when working with materials such as PLA (polylactic acid), PET, and rPET—chain extenders are vital additives used to improve melt strength, molecular weight, and overall processability. Two popular types of chain extenders are PMDA (pyromellitic dianhydride) and epoxy-functional chain extenders, such as HyMax® KL-180. Although both aim to achieve similar goals […]