TY  - JOUR
AU  - Martin, J.
AU  - Krutyeva, M.
AU  - Monkenbusch, M.
AU  - Arbe, A.
AU  - Allgaier, J.
AU  - Radulescu, A.
AU  - Falus, P.
AU  - Maiz, J.
AU  - Mijangos, C.
AU  - Colmenero, J.
AU  - Richter, D.
TI  - Direct Observation of confined Single Chain Dynamics by Neutron Scattering
JO  - Physical review letters
VL  - 104
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-9699
SP  - 197801
PY  - 2010
N1  - We thank M. Hernandez-Velez, A. R. Gonzalez-Elipe, J. Gil, R. Sastre, O. Garcia, and M. Brodeck, SoftComp NoE, MAT2007-63681, IT-436-07 (GV), the MEyC (CSD2006-53), Grants FPU AP2005-1063 and MAT2008-1073.
AB  - Neutron spin echo has revealed the single chain dynamic structure factor of entangled polymer chains confined in cylindrical nanopores with chain dimensions either much larger or smaller than the lateral pore sizes. In both situations, a slowing down of the dynamics with respect to the bulk behavior is only observed at intermediate times. The results at long times provide a direct microscopic measurement of the entanglement distance under confinement. They constitute the first experimental microscopic evidence of the dilution of the total entanglement density in a polymer melt under strong confinement, a phenomenon that so far was hypothesized on the basis of various macroscopic observations.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000277699600053
DO  - DOI:10.1103/PhysRevLett.104.197801
UR  - https://juser.fz-juelich.de/record/9699
ER  -