Translation-Rotation Paradox for Diffusion in Glass-Forming Polymers: The Role of the Temperature Dependence of the Relaxation Time Distribution

@article{citeulike:2067349, abstract = {Comparisons are made of the translational and rotational diffusion of small-molecule probes in a polymer near its glass transition temperature; T g . In the rubbery state; 1.1 T g > T > T g ; translational diffusion is much less temperature dependent than rotational reorientation; in a ” quenched” glass; translation and rotation have similar temperature dependencies. This is explained to be a consequence of the fact that in the rubbery state near T g the breadth of the polymer relaxation distribution is strongly temperature dependent; while in the quenched glass it is temperature invariant.}, author = {Hall, David B. and Dhinojwala, Ali and Torkelson, John M.}, citeulike-article-id = {2067349}, doi = {10.1103/PhysRevLett.79.103}, journal = {Physical Review Letters}, keywords = {journal-club, polymer, rotation}, month = {July}, number = {1}, pages = {103+}, posted-at = {2007-12-06 15:39:12}, priority = {0}, publisher = {American Physical Society}, title = {Translation-Rotation Paradox for Diffusion in Glass-Forming Polymers: The Role of the Temperature Dependence of the Relaxation Time Distribution}, url = {http://dx.doi.org/10.1103/PhysRevLett.79.103}, volume = {79}, year = {1997} }

TY - JOUR ID - citeulike:2067349 L3 - citeulike-article-id:2067349 N2 - Comparisons are made of the translational and rotational diffusion of small-molecule probes in a polymer near its glass transition temperature; T g . In the rubbery state; 1.1 T g > T > T g ; translational diffusion is much less temperature dependent than rotational reorientation; in a “quenched” glass; translation and rotation have similar temperature dependencies. This is explained to be a consequence of the fact that in the rubbery state near T g the breadth of the polymer relaxation distribution is strongly temperature dependent; while in the quenched glass it is temperature invariant. IS - 1 JF - Physical Review Letters TI - Translation-Rotation Paradox for Diffusion in Glass-Forming Polymers: The Role of the Temperature Dependence of the Relaxation Time Distribution PB - American Physical Society VL - 79 SP - 103 KW - journal-club KW - polymer KW - rotation AU - Hall, David AU - Dhinojwala, Ali AU - Torkelson, John PY - 1997/07/07/ UR - http://dx.doi.org/10.1103/PhysRevLett.79.103 ER -