Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.118001
Keywords
-
Categories
Funding
- NSF CMMI [0823327, 0928320]
- NSF IDR CMM [I 1130948]
- Ryan Fellowship at NWU
- Swiss National Foundation [SNF SCOPES IZ73Z0-128169]
- World Class University Program through the Natl. Res. Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [R33-10079]
- Office of Science of the U.S. Department of Energy [DE-AC02-06CH11357]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0928320, 0823327] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1130948] Funding Source: National Science Foundation
Ask authors/readers for more resources
We explore the dynamics of entangled polymer chains embedded into nanocomposites. From primitive path analysis, highly entangled polymer chains are found to be significantly disentangled during increment of the volume fraction of spherical nonattractive nanoparticles (NPs) from 0 to 42%. A critical volume fraction, phi(c) = 31%, is found to control the crossover from polymer chain entanglements to NP entanglements. While below phi(c), the polymer chain relaxation accelerates upon filling, above phi(c), the situation reverses: polymer dynamics becomes geometrically constrained upon adding NPs. Our findings provide a microscopic understanding of the dynamics of entangled polymer chains inside their composites, and offer an explanation for the unusual rheological properties of polymer composites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
