Van Ruymbeke, Evelyne
[UCL]
Kapnistos, Michael
[FORTH Institute of Electronic Structure and Laser, Crete, Greece]
Vlassopoulos, Dimitri
[FORTH Institute of Electronic Structure and Laser, Crete, Greece]
Huang, Tianzi
[Colorado School of Mines]
Knauss, Daniel M
[Colorado School of Mines]
We measured the linear viscoelastic properties of a series of polystyrene melts with pom-pom architecture consisting of backbones ranging from marginally to well-entangled (of molecular weight Mb), endgrafted with q unentangled branches (Mbr) per backbone end. In this case, the branches relax very fast and act primarily as solvents for the backbone. Using a time-marching tube-based model, we showed that, in such a case only, the pom-pom polymer is equivalent to a blend of long (ML Mb + 2Mbr) and short (MS Mbr) linear chains with respective proportion (Mb + 2Mbr)/2(q - 1)Mbr.
| Bibliographic reference |
Van Ruymbeke, Evelyne ; Kapnistos, Michael ; Vlassopoulos, Dimitri ; Huang, Tianzi ; Knauss, Daniel M. Linear Melt Rheology of Pom-Pom Polystyrenes with Unentangled Branches. In: Macromolecules, Vol. 40, no.5, p. 1713-1719 (26 January) |
| Permanent URL |
http://hdl.handle.net/2078.1/162274 |
