Journal
ACS MACRO LETTERS
Volume 9, Issue 10, Pages 1452-1457Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.0c00607
Keywords
-
Categories
Funding
- European Union [765811]
- Aage og Johanne LouisHansen foundation
- FORTH Synergy-2019 grant
- Villum Experiment grant [17363]
- National Science Foundation [DMR-1508249]
- Danish Agency for Science, Technology, and Innovation
- Sandia Laboratory Directed Research and Development Program
- U.S. DOE's National Nuclear Security Administration [DENA-0003525]
- Marie Curie Actions (MSCA) [765811] Funding Source: Marie Curie Actions (MSCA)
Ask authors/readers for more resources
Adding small amounts of ring polymers to a matrix of their linear counterparts is known to increase the zero-shear-rate viscosity because of linear-ring threading. Uniaxial extensional rheology measurements show that, unlike its pure linear and ring constituents, the blend exhibits an overshoot in the stress growth coefficient. By combining these measurements with ex-situ small-angle neutron scattering and nonequilibrium molecular dynamics simulations, this overshoot is shown to be driven by a transient threading-unthreading transition of rings embedded within the linear entanglement network. Prior to unthreading, embedded rings deform affinely with the linear entanglement network and produce a measurably stronger elongation of the linear chains in the blend compared to the pure linear melt. Thus, rings uniquely alter the mechanisms of transient elongation in linear polymers.
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