چكيده لاتين :
Bitumen as a binder in coating and insulating materials is modified with
polymers to improve its performance in service conditions. Almost all
polymers are incompatible with bitumen, and at high temperatures due
to relatively very low viscosity of the bitumen phase, are separated from it. These
lead to a considerable limitation in the use and handling of polymer-modified
bitumens. An understanding of the mechanisms of phase separation of these
incompatible mixtures help to improve methods of transportation and handling
of polymer-modified bitumens. According to direct observations of the behavior
of polyethylene particles in medium of molten bitumen confirm the indirect
conclusion already made by others, (coalescence based phase separation) and
reject any possibility of occurring Ostwald ripening. This conclusion can also
generalized to viscoelastic incompatible polymer blends. Prog. Color Colorants
Coat. 2(2009), 53-59. © Institute for Color Science and Technology
