TY  - JOUR
AU  - Goossen, Sebastian
AU  - Bras, Ana
AU  - Krutyeva, M.
AU  - Sharp, M.
AU  - Falus, P.
AU  - Feoktystov, A.
AU  - Gasser, U.
AU  - Pyckhout-Hintzen, W.
AU  - Wischnewski, A.
AU  - Richter, D.
TI  - Molecular Scale Dynamics of Large Ring Polymers
JO  - Physical review letters
VL  - 113
IS  - 16
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-05270
SP  - 168302
PY  - 2014
AB  - We present neutron scattering data on the structure and dynamics of melts from polyethylene oxide rings with molecular weights up to ten times the entanglement mass of the linear counterpart. The data reveal a very compact conformation displaying a structure approaching a mass fractal, as hypothesized by recent simulation work. The dynamics is characterized by a fast Rouse relaxation of subunits (loops) and a slower dynamics displaying a lattice animal-like loop displacement. The loop size is an intrinsic property of the ring architecture and is independent of molecular weight. This is the first experimental observation of the space-time evolution of segmental motion in ring polymers illustrating the dynamic consequences of their topology that is unique among all polymeric systems of any other known architecture.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000344032500011
DO  - DOI:10.1103/PhysRevLett.113.168302
UR  - https://juser.fz-juelich.de/record/171701
ER  -