Because of their approximately spherical or globular morphology, the properties of hyperbranched polymers differ from traditional linear polymers in that they have relatively low molecular volume for a given molecular weight and have a high concentration of end groups. In addition, the end group concentration remains relatively constant as molecular weight increases. These unique structural features of hyperbranched polymers result in uncommon combinations of physical properties and opportunities for achieving interesting new properties in end-use applications. How the structural features of hyperbranched polymers might translate to physical properties and ultimately to end-use performance in radiation-cured applications is described in Figure 2.