Application Note: Molecular and Bulk Characterization of PLA and PLGA Samples Using Multi-Detector GPC and Rheometry
23 October 2017

This application note uses two Malvern technologies to explore the relationship between the molecular and bulk properties of PLA and PLGA, two biodegradable polymers derived from natural resources (corn starch).  Multi-detector GPC is used to measure molecular weight and intrinsic viscosity (which is dependent on copolymer composition), while rotational rheology is used to study melt viscosity.  The two results are then compared to study which molecular properties best correlate with melt-viscosity.