Journal
MACROMOLECULES
Volume 49, Issue 15, Pages 5704-5713Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.6b01285
Keywords
-
Categories
Funding
- Spanish Ministry Ministerio de Economia y Competitividad [MAT2015-63704-P]
- Basque Government [IT-654-13]
- UCM [BE45/10]
- UK Science and Technology Facilities Council
Ask authors/readers for more resources
The incorporation of high-molecular-weight poly(ethylene oxide) (PEO) in the nanopores of resorcinol-formaldehyde resin nanoparticles (RNPs) leads to the suppression of polymer crystallization, changes in the chain conformation, and a noticeable slowdown of the two dielectric relaxations that reflect the segmental and local PEO dynamics. Both relaxations are significantly slower than those corresponding to bulk PEO. These results are independent of the pore characteristics of the different RNP materials. The segmental relaxation shows a crossover at ca. 220 K in its temperature dependence from non-Arrhenius to Arrhenius-like behavior on cooling. These results suggest the occurrence of limited cooperativity at low temperatures due to the enhancement of long-living hydrogen bonding between PEO and RNP pore walls.
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