... desirable applications.MW is another important parameter for HPs. Theoretically, the equations of number- and weight-average degrees of polymerization (P n and P w )and the polydispersity index (PDI) ... during the purification. The HPs with a broad PDIcould be used as plasticizers to improve the processability of other polymers. On the other hand, the PDI could be narrowed by the techniques of (i) ... on synthesis, characterization, properties, and applications of HPs.1.4 HYPERBRANCHED POLYMERS1.4.1 Concept and HistoryIt is known that the DuPont researchers, Kim and Webster, coined the...